Synthesis And Chemistry Of Yttrium And Lanthanide Metal Complexes

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Synthesis and Chemistry of Yttrium and Lanthanide Metal Complexes

Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Synthesis and Chemistry of Yttrium and Lanthanide Metal Complexes by :

Download or read book Synthesis and Chemistry of Yttrium and Lanthanide Metal Complexes written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research project is to determine the special features of complexes of yttrium and the lanthanide metals which will allow the design and synthesis of materials with unique chemical, physical, and catalytic properties. Past studies of yttrium and lanthanide metal alkyl and hydride complexes stabilized by cyclopentadienyl co-ligands have shown that a substantial, often singular, organometallic chemistry is available via these metals. More extensive utilization of the chemical opportunities available through yttrium and the lanthanides would be possible, however, if stabilizing ancillary ligand systems less sensitive to oxidation and protonolysis than cyclopentadienides could be developed. Alkoxide ligands are attractive in this regard and our recent research had focused on alkoxides and the special opportunities they can provide to these metals. 6 refs., 10 figs.

Synthesis and Chemistry of Yttrium and Lanthanide Metal Complexes. Progress Report, March 15, 1991--March 14, 1992

Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Synthesis and Chemistry of Yttrium and Lanthanide Metal Complexes. Progress Report, March 15, 1991--March 14, 1992 by :

Download or read book Synthesis and Chemistry of Yttrium and Lanthanide Metal Complexes. Progress Report, March 15, 1991--March 14, 1992 written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research project is to determine the special features of complexes of yttrium and the lanthanide metals which will allow the design and synthesis of materials with unique chemical, physical, and catalytic properties. Past studies of yttrium and lanthanide metal alkyl and hydride complexes stabilized by cyclopentadienyl co-ligands have shown that a substantial, often singular, organometallic chemistry is available via these metals. More extensive utilization of the chemical opportunities available through yttrium and the lanthanides would be possible, however, if stabilizing ancillary ligand systems less sensitive to oxidation and protonolysis than cyclopentadienides could be developed. Alkoxide ligands are attractive in this regard and our recent research had focused on alkoxides and the special opportunities they can provide to these metals. 6 refs., 10 figs.

Lanthanides And Actinides, The: Synthesis, Reactivity, Properties And Applications

Author : Stephen T Liddle
Publisher : World Scientific
ISBN 13 : 1800610173
Total Pages : 727 pages
Book Rating : 4.8/5 (6 download)

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Book Synopsis Lanthanides And Actinides, The: Synthesis, Reactivity, Properties And Applications by : Stephen T Liddle

Download or read book Lanthanides And Actinides, The: Synthesis, Reactivity, Properties And Applications written by Stephen T Liddle and published by World Scientific. This book was released on 2021-12-30 with total page 727 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lanthanides and Actinides: Synthesis, Reactivity, Properties and Applications constitutes an introduction to and comprehensive coverage of f-block chemistry encompassing the following areas: periodicity, natural occurrence and extraction, separations, electronic structure, coordination chemistry, organometallic chemistry, small molecule activation, catalysis, organic synthesis applications, magnetism, spectroscopy, computation, materials, photonics, solar cell technology, biological imaging, and technological applications. Under these subject areas the book provides a broad but deep coverage, providing basic overviews as well as detailed chapters on specific areas.This book, targeted at academics, postgraduates and advanced undergraduates, will serve as an ideal introductory text and key reference work to the Lanthanides and Actinides.

Expanding the Redox Chemistry of Yttrium, the Lanthanides, and Uranium Through Synthesis and Reactivity of Bis-, Tris-, and Tetrakis-(trimethylsilylcyclopentadienyl) Complexes

Download Expanding the Redox Chemistry of Yttrium, the Lanthanides, and Uranium Through Synthesis and Reactivity of Bis-, Tris-, and Tetrakis-(trimethylsilylcyclopentadienyl) Complexes PDF Online Free

Author : Matthew Ryan MacDonald
Publisher :
ISBN 13 : 9781303191855
Total Pages : 374 pages
Book Rating : 4.1/5 (918 download)

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Book Synopsis Expanding the Redox Chemistry of Yttrium, the Lanthanides, and Uranium Through Synthesis and Reactivity of Bis-, Tris-, and Tetrakis-(trimethylsilylcyclopentadienyl) Complexes by : Matthew Ryan MacDonald

Download or read book Expanding the Redox Chemistry of Yttrium, the Lanthanides, and Uranium Through Synthesis and Reactivity of Bis-, Tris-, and Tetrakis-(trimethylsilylcyclopentadienyl) Complexes written by Matthew Ryan MacDonald and published by . This book was released on 2013 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation focuses on the synthesis, characterization, and reactivity of unique organometallic complexes of yttrium, the lanthanides, and uranium in efforts to expand the limits of known redox chemistry of these elements. The results in this dissertation arose from investigations of previously established reduction reactions involving these metal ions that were not fully understood. In general, rare metal and actinide complexes of formula A3M and A22A'M (A = substituted cyclopentadienyl; A' = different monoanionic ligand; M = yttrium, lanthanide, uranium) were reacted with a variety of bases, alkyllithium reagents, azides, and alkali metals under different conditions. These investigations led to several new examples of substrate reduction and small molecule activation, and in some cases, gave insight into how these complicated reduction processes might be occurring. In the course of these studies, eight new oxidation states were discovered: the first examples of molecular complexes of the following ions, Y2, Ho2, Er2+, Tb2+, Pr2+, Gd2+, Lu2+, and U2+.

Expanding F Element Chemistry

Author : Elizabeth Montalvo
Publisher :
ISBN 13 : 9781124017952
Total Pages : 221 pages
Book Rating : 4.0/5 (179 download)

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Book Synopsis Expanding F Element Chemistry by : Elizabeth Montalvo

Download or read book Expanding F Element Chemistry written by Elizabeth Montalvo and published by . This book was released on 2010 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation develops f element chemistry by investigating and comparing the synthesis, coordination chemistry, and reactivity of lanthanide and actinide metal complexes with diazoalkane derivatives and guanidinates. The bis(cyclopentadienyl) ligand unit, [(n5-C5ME5)2]2-, was used to conduct these studies since it has previously proven to be a reliable route for investigating new ligands in f element chemistry. This is because it is relatively inert, provides solubility and stability to the reactive metal center, and allows spectroscopic and structural data to be obtained that is useful for analyzing this chemistry. Diazoalkanes, RRLCN2, are of interest because they are important organic substrates that are useful as carbene precursors and as reagents for the synthesis of heterocyclic compounds. Although the chemistry of diazoalkanes with the transition metals has been heavily studied, little is known about f element chemistry with these compounds. The lanthanides and actinides are different in their behavior with diazoalkanes. Lanthanides make cyanoamide complexes that can be converted by their reaction with nitriles to complexes of 1,2,3-triazoles, which are heterocycles with pharmaceutical, industrial, and agrochemical applications. In contrast, uranium makes very soluble products that do not react with nitriles. A facile synthetic route to hydrazonato complexes was also developed from lanthanide allyl complexes and diazoalkanes during this study. The chemistry of the bicyclic guanidinate ligand, (hpp)1-, was examined with the f elements because this ligand has the potential to stabilize higher oxidation states which are rare with the f elements. The (hpp)1- ligand can be readily incorporated into complexes of Ln3+, U3+, and U4+ and it can stabilize rare examples of mono-alkyl, hydride, and "tuck-in", (n5:n1-C5Me4CH2)2- U4+ complexes as well as U5+ in some cases. The reactivity of the uranium "tuck-in" complex was examined because this unit is frequently proposed as an intermediate in mechanistic schemes involving alkyl C-H bond activation with the f elements. The effect of the {(C5Me5)2(hpp)}3- ligand combination on uranium mono-alkyl and hydride reactivity was also examined. Altogether, the results from these studies expand our knowledge of f element chemistry and highlight the differences in chemical reactivity of the f elements compared to the transition metals.

Comprehensive Organometallic Chemistry II

Author : E.W. Abel
Publisher : Pergamon
ISBN 13 : 9780080406084
Total Pages : 704 pages
Book Rating : 4.4/5 (6 download)

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Book Synopsis Comprehensive Organometallic Chemistry II by : E.W. Abel

Download or read book Comprehensive Organometallic Chemistry II written by E.W. Abel and published by Pergamon. This book was released on 1995-10-13 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: . Covers the literature in depth from 1982-1994, thus building on the original nine volumes . 14 volume set . 8750 pages approx . Volumes 1-9 provide a detailed account of the organic chemistry of both main group and transition elements . Volume 10 deals with compounds containing heteronuclear metal-metal bonds . Volume 11 describes the use of main group organometallic compounds in organic synthesis . Volume 12 is devoted to the use of transition metal orgnometallic compounds in organic synthesis . Volume 13 consists of a comprehensive index of all organometallic structures studied by diffraction methods . Volume 14 contains subject and formula indexes covering Volumes 1-12

Lanthanide and Actinide Chemistry

Author : Simon Cotton
Publisher : John Wiley & Sons
ISBN 13 : 1118681363
Total Pages : 308 pages
Book Rating : 4.1/5 (186 download)

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Book Synopsis Lanthanide and Actinide Chemistry by : Simon Cotton

Download or read book Lanthanide and Actinide Chemistry written by Simon Cotton and published by John Wiley & Sons. This book was released on 2013-03-15 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only introduction into the exciting chemistry of Lanthanides and Actinides. The book is based on a number of courses on "f elements" The author has a long experience in teaching this field of chemistry Lanthanides have become very common elements in research and technology applications; this book offers the basic knowledge The book offers insights into a vast range of applications, from lasers to synthesis The Inorganic Chemistry: A Textbook series reflects the pivotal role of modern inorganic and physical chemistry in a whole range of emerging areas, such as materials chemistry, green chemistry and bioinorganic chemistry, as well as providing a solid grounding in established areas such as solid state chemistry, coordination chemistry, main group chemistry and physical inorganic chemistry. Lanthanide and Actinide Chemistry is a one-volume account of the Lanthanides (including scandium and yttrium), the Actinides and the Transactinide elements, intended as an introductory treatment for undergraduate and postgraduate students. The principal features of these elements are set out in detail, enabling clear comparison and contrast with the Transition Elements and Main Group metals. The book covers the extraction of the elements from their ores and their purification, as well as the synthesis of the man-made elements; the properties of the elements and principal binary compounds; detailed accounts of their coordination chemistry and organometallic chemistry, from both preparative and structural viewpoints, with a clear explanation of the factors responsible for the adoption of particular coordination numbers; spectroscopy and magnetism, especially for the lanthanides, with case studies and accounts of applications in areas like magnetic resonance imaging, lasers and luminescence; nuclear separations and problems in waste disposal for the radioactive elements, particularly in the context of plutonium. Latest developments are covered in areas like the synthesis of the latest man-made elements, whilst there is a whole chapter on the application of lanthanide compounds in synthetic organic chemistry. End-of-chapter questions suitable for tutorial discussions are provided, whilst there is a very comprehensive bibliography providing ready access to further reading on all topics.

Synthesis and Chemistry of Lanthanide Complexes with Phosphorus Ylides, Amides Or Porphyrinate Ligands, and of Transition Metal Complexes with Polydentate Ligands

Download Synthesis and Chemistry of Lanthanide Complexes with Phosphorus Ylides, Amides Or Porphyrinate Ligands, and of Transition Metal Complexes with Polydentate Ligands PDF Online Free

Author : Lilu Zhang
Publisher :
ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.:/5 (442 download)

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Book Synopsis Synthesis and Chemistry of Lanthanide Complexes with Phosphorus Ylides, Amides Or Porphyrinate Ligands, and of Transition Metal Complexes with Polydentate Ligands by : Lilu Zhang

Download or read book Synthesis and Chemistry of Lanthanide Complexes with Phosphorus Ylides, Amides Or Porphyrinate Ligands, and of Transition Metal Complexes with Polydentate Ligands written by Lilu Zhang and published by . This book was released on 1999 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Expanding Synthetic Aspects of Redox and Mechanical Organometallic Chemistry of Rare Earth Complexes

Author : Christopher Matthew Kotyk
Publisher :
ISBN 13 : 9781321996111
Total Pages : 132 pages
Book Rating : 4.9/5 (961 download)

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Book Synopsis Expanding Synthetic Aspects of Redox and Mechanical Organometallic Chemistry of Rare Earth Complexes by : Christopher Matthew Kotyk

Download or read book Expanding Synthetic Aspects of Redox and Mechanical Organometallic Chemistry of Rare Earth Complexes written by Christopher Matthew Kotyk and published by . This book was released on 2015 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation describes the synthesis, characterization, and reactivity of organometallic complexes of yttrium and the lanthanides in an effort to more completely understand the nature of a recently-discovered class of +2 ions of these rare earth metals. The reactivity of complexes of a new set of Ln2+ ions (Ln = rare earth metal) with unprecedented 4fn5d1 electron configurations has been explored to expand the unique chemistry possible with the rare earth elements. The isolation of unexpected reaction products is described as well as the discovery of a new divalent lanthanide system and the utilization of solvent-free mechanochemical synthesis for established rare earth organometallic species. In Chapter 1, the reactivity of the highly-reducing, air-, moisture-, and temperature-sensitive divalent lanthanide complexes [K(2.2.2-cryptand)][Cp'3Ln] (Ln = Y, La, Ce, Dy) is characterized by examining reactions with aromatic organic substrates of known reduction potential. Complexes of the 4fn5d1 Ln2+ ions reduce naphthalene and biphenyl within minutes to form a new class of reduced aromatic complexes, [K(2.2.2-cryptand)][Cp'2Ln(n4-C10H8)] (Ln = Y, La, Ce, Dy) and [K(2.2.2-cryptand)][Cp'2Y(n6-C6H5Ph)], respectively. The naphthalene reactions also produced the previously unobserved ligand redistribution products [K(2.2.2-cryptand)][Cp'4Ln] (Ln = Y, La), which show the effect of the lanthanide contraction on structure as the lanthanum complex has four n5-Cp' rings while yttrium has three n5-Cp' rings and one n1-Cp' ring.

Synthesis, Structure, and Reactivity of Alkoxide-based Yttrium and Lanthanide Complexes

Author : Robert Edward Golden
Publisher :
ISBN 13 :
Total Pages : 364 pages
Book Rating : 4.:/5 (285 download)

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Book Synopsis Synthesis, Structure, and Reactivity of Alkoxide-based Yttrium and Lanthanide Complexes by : Robert Edward Golden

Download or read book Synthesis, Structure, and Reactivity of Alkoxide-based Yttrium and Lanthanide Complexes written by Robert Edward Golden and published by . This book was released on 1993 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Organometallic Syntheses

Author : R. Bruce King
Publisher : Elsevier
ISBN 13 : 1483289931
Total Pages : 686 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Organometallic Syntheses by : R. Bruce King

Download or read book Organometallic Syntheses written by R. Bruce King and published by Elsevier. This book was released on 2013-10-22 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organometallic Syntheses, Volume 3 focuses on the synthesis of compounds containing carbon-metal bonds, including ligands, compounds, chlorides, and derivatives. The selection first elaborates on bis(cyclopentadienyl) organolanthanide and organoyttrium chloride, methyl, and hydride complexes and base stabilized alkali metal halide adducts of bis (pentamethylcyclopentadienyl) lanthanide chlorides. The text then examines cyclopentadienyl metal carbonyl and nitrosyl derivatives, ferrocenylamine, cobalticinium and rhodicinium salts, and alkyl transition metal derivatives. The publication takes a look at transition metal complexes containing organophosphorus ligands, transition metal derivatives containing chalcogen ligands, and coinage metal derivatives. The text also reviews transition metal organometallic compounds, including compounds of group IA, IIA, IIB, and IVA. The selection is a vital reference for researchers interested in the synthesis of compounds containing carbon-metal bonds.

Synthesis and Thermal Studies of Some Lanthanide Metal Complexes

Author : Emilia Maria Krankovits
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (222 download)

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Book Synopsis Synthesis and Thermal Studies of Some Lanthanide Metal Complexes by : Emilia Maria Krankovits

Download or read book Synthesis and Thermal Studies of Some Lanthanide Metal Complexes written by Emilia Maria Krankovits and published by . This book was released on 1969 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Chemistry of Macrocyclic Ligand Complexes

Author : Leonard F. Lindoy
Publisher : Cambridge University Press
ISBN 13 : 052125261X
Total Pages : 281 pages
Book Rating : 4.5/5 (212 download)

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Book Synopsis The Chemistry of Macrocyclic Ligand Complexes by : Leonard F. Lindoy

Download or read book The Chemistry of Macrocyclic Ligand Complexes written by Leonard F. Lindoy and published by Cambridge University Press. This book was released on 1989-03-23 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains an overview of complex formation by macrocyclic ligand systems. The study of macrocyclic chemistry represents a major area of activity which impinges on a range of other areas in both chemistry and biochemistry. The field has characteristically yielded many interesting and unusual compounds. The text discusses the structures and properties of macrocyclic compounds; the synthesis of macrocycles; polyether crown and related systems; metal-ion and molecular recognition (host-guest chemistry); as well as kinetic, thermodynamic and electrochemical aspects of a range of macrocyclic systems. A discussion of the different categories of naturally occurring macrocycles is also included. Specialist and non-specialist alike will find this a useful text. Apart from serving as a convenient reference for established workers in the field, it should also prove useful to new graduate students as well as to researchers from other areas who seek a general introduction to the subject. The topics discussed also provide a suitable basis for a senior undergraduate or graduate course in macrocyclic chemistry and inorganic complexes.

Rare Earth Coordination Chemistry

Author : Chun-Hui Huang
Publisher : John Wiley & Sons
ISBN 13 : 0470824867
Total Pages : 602 pages
Book Rating : 4.4/5 (78 download)

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Book Synopsis Rare Earth Coordination Chemistry by : Chun-Hui Huang

Download or read book Rare Earth Coordination Chemistry written by Chun-Hui Huang and published by John Wiley & Sons. This book was released on 2011-09-23 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by a highly regarded scientist and with contributions from sixteen international research groups, spanning Asia and North America, Rare Earth Coordination Chemistry: Fundamentals and Applications provides the first one-stop reference resource for important accomplishments in the area of rare earth. Consisting of two parts, Fundamentals and Applications, readers are armed with the systematic basic aspects of rare earth coordination chemistry and presented with the latest developments in the applications of rare earths. The systematic introduction of basic knowledge, application technology and the latest developments in the field, makes this ideal for readers across both introductory and specialist levels.

Direct Synthesis of Metal Complexes

Author : B.I. Kharisov
Publisher : Elsevier
ISBN 13 : 0128110627
Total Pages : 470 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Direct Synthesis of Metal Complexes by : B.I. Kharisov

Download or read book Direct Synthesis of Metal Complexes written by B.I. Kharisov and published by Elsevier. This book was released on 2018-04-19 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct Synthesis of Metal Complexes provides in-depth coverage of the direct synthesis of coordination and organometallic compounds. The work is primarily organized by methods, but also covers highly relevant complexes, such as metal-polymer coordination compounds. This updated reference discusses recent developments in cryosynthesis, electrosynthesis, and tribosynthesis (popular as it doesn’t require organic solvents), with special attention paid to ‘greener’ methodologies and approaches. Additionally, the book describes physical methods of zero-valent metal interaction with organic matter, including sputtering, ultrasonic treatment and synthesis in ionic liquids. The book presents completely new content as a follow-up to the 1999 Elsevier Science publication Direct Synthesis of Coordination and Organometallic Compounds that was edited by Dr. Garnovskii and Dr. Kharisov. Covers current methods and techniques of metal interactions with organic media leading to metal chelates, adducts, di- and polymetallic complexes, metal-containing macrocycles, supported coordination compounds (i.e., metal complexes on carbon nanotubes), and more Describes reactivities of distinct forms of elemental metals (powders, sheets, nanoparticles (including a host of less-common metal nanostructures) with organic phase (liquid, solid and gaseous) and water Includes experimental procedures, with examples of direct synthesis, at the end of each chapter

The Synthesis and Characterization of Lanthanide Complexes with Phenalenide and Aromatic-fused Cyclopentadienyls as Ligands

Author : Jianlong Sun
Publisher :
ISBN 13 : 9780494283004
Total Pages : 0 pages
Book Rating : 4.2/5 (83 download)

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Book Synopsis The Synthesis and Characterization of Lanthanide Complexes with Phenalenide and Aromatic-fused Cyclopentadienyls as Ligands by : Jianlong Sun

Download or read book The Synthesis and Characterization of Lanthanide Complexes with Phenalenide and Aromatic-fused Cyclopentadienyls as Ligands written by Jianlong Sun and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis of yttrium phenalenide complexes 129-132 was achieved by salt metathesis reactions between ligand anions and YCI3. Ytterbium phenalenide complexes 133-137 were synthesized by protonolysis reactions between neutral ligands and Yb[N(SiMe3)2]2(THF)2. The solid state structure of (Pni1Bu)2Yb(THF) 136 reveals a unique n3 bonding pattern, however the electrons of the phenalenide ligand remain delocalized even when bonded to the metal center.Mono-alkyl complexes (PCpR)2Y(CH2SiMe3)(THFSiMe3)(THF) 147-149 (R = Me. Ph. H) and bis-alkyl complexes (PCp*)Y(CH2SiMe3)2(THF) 150 and (sCp)Y(CH2SiMe3)2(THF) 152 were synthesized by direct protonolysis reactions between Y(CH2SiMe3)3(THF)2 and neutral ligands. When treated with phenylsilane, complex 148 generated the crowded hydride dimer [(PCpPh)2Y(u-H)]2 161. Complexes 150 and 152 undergo acid-base. metallation. insertion reactions and polymerization of small substrates. A variable temperature `H NMR study of 150 and 152 at low temperature reveals an equilibrium between 150/152-THF and 1501152. The THF-free complexes. 150/152-THF. appear to undergo inversion of a pyramidal ground state structure to generate a C2 symmetric intermediate. The X-ray structures of 136, 147, 150. 152, (sCp)Y(CH2SiMe3)2(bipy) 154, 161. [PCp*Y(CCSiMe3)(THF)]2(u2-CCSiMe3)2] 167, acetylide cluster 169 and bis-(Me3Si)2Cp yttrium chloride dimer 176 were determined and structural features discussed.

Synthesis and Characterization of Lanthanide Complexes with Phenalenide and Aromatic-fused Cyclopentadienyls as Ligands

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (68 download)

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Book Synopsis Synthesis and Characterization of Lanthanide Complexes with Phenalenide and Aromatic-fused Cyclopentadienyls as Ligands by :

Download or read book Synthesis and Characterization of Lanthanide Complexes with Phenalenide and Aromatic-fused Cyclopentadienyls as Ligands written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis of yttrium phenalenide complexes 129-132 was achieved by salt metathesis reactions between ligand anions and YCI3. Ytterbium phenalenide complexes 133-137 were synthesized by protonolysis reactions between neutral ligands and Yb[N(SiMe3)2]2(THF)2. The solid state structure of (Pni1Bu)2Yb(THF) 136 reveals a unique n3 bonding pattern, however the electrons of the phenalenide ligand remain delocalized even when bonded to the metal center. Mono-alkyl complexes (PCpR)2Y(CH2SiMe3)(THFSiMe3)(THF) 147-149 (R = Me. Ph. H) and bis-alkyl complexes (PCp*)Y(CH2SiMe3)2(THF) 150 and (sCp)Y(CH2SiMe3)2(THF) 152 were synthesized by direct protonolysis reactions between Y(CH2SiMe3)3(THF)2 and neutral ligands. When treated with phenylsilane, complex 148 generated the crowded hydride dimer [(PCpPh)2Y(u-H)]2 161. Complexes 150 and 152 undergo acid-base. metallation. insertion reactions and polymerization of small substrates. A variable temperature `H NMR study of 150 and 152 at low temperature reveals an equilibrium between 150/152-THF and 1501152. The THF-free complexes. 150/152-THF. appear to undergo inversion of a pyramidal ground state structure to generate a C2 symmetric intermediate. The X-ray structures of 136, 147, 150. 152, (sCp)Y(CH2SiMe3)2(bipy) 154, 161. [PCp*Y(CCSiMe3)(THF)]2(u2-CCSiMe3)2] 167, acetylide cluster 169 and bis-(Me3Si)2Cp yttrium chloride dimer 176 were determined and structural features discussed.