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Studies Of Main Group Metal Complexes Containing New Phosphorus And Nitrogen Functionalised Ligands
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Book Synopsis Studies of Main Group Metal Complexes Containing New Phosphorus and Nitrogen Functionalised Ligands by : Alexander Rothenberger
Download or read book Studies of Main Group Metal Complexes Containing New Phosphorus and Nitrogen Functionalised Ligands written by Alexander Rothenberger and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transition Metal Complexes of Phosphorus, Arsenic and Antimony Ligands by : Charles Andrew McAuliffe
Download or read book Transition Metal Complexes of Phosphorus, Arsenic and Antimony Ligands written by Charles Andrew McAuliffe and published by John Wiley & Sons. This book was released on 1973 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Study of Transition Metal Complexes of Phosphorus-nitrogen Containing Compounds by : Alasdair J. Robbie
Download or read book The Study of Transition Metal Complexes of Phosphorus-nitrogen Containing Compounds written by Alasdair J. Robbie and published by . This book was released on 2006 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Some Group VIII Metal Complexes Containing Nitrogen Or Oxygen Donor Ligands by : Michael Frank Uttley
Download or read book Studies of Some Group VIII Metal Complexes Containing Nitrogen Or Oxygen Donor Ligands written by Michael Frank Uttley and published by . This book was released on 1973 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transition-metal Complexes Containing Phosphorus Ligands by : N. Ahmad
Download or read book Transition-metal Complexes Containing Phosphorus Ligands written by N. Ahmad and published by . This book was released on 1972 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Novel Tiophene Supported N, N' - Chelating Ligands and Their Main Group Compounds by : Jacquelyn T. Price
Download or read book Novel Tiophene Supported N, N' - Chelating Ligands and Their Main Group Compounds written by Jacquelyn T. Price and published by . This book was released on 2013 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Main group chemistry has advanced from studying fundamental curiosities, including low oxidation state, low-valent, p-block elements to tailoring these unique, reactive species for specific functional applications. This thesis examines the structure, bonding and reactivity of select group 13, 14 and 15 elements supported by N, N'-chelating ligands decorated with either thiophene, benzo[1,2-b:5,6-b']dithiophene or bis(2,5-dimethylthienyl)ethene substituents and allowing for subsequent reactivity and photophysical properties to be determined. The synthesis of a new diamino ligand containing a thiophene ring in the backbone was used to support a 7-membered phosphenium cation. The 1:1 stoichiometric reaction between the amine:chlorophosphine was dependant on the substitution at nitrogen. A 1:1 stoichiometric reaction between PCl3 and diamine (R = 2,4,6-trimethyphenyl), yielded the acyclic bis(aminodichlorophosphine), while with diisopropylphenyl groups on nitrogen both the 1:1 cyclic aminochlorophosphine and 1:2 acyclic bis(aminodichlorophosphine) were observed in a 4:1 ratio. To amend the poor selectivity, a new diamine was designed with benzo[1,2-b:5,6-b']dithiophene in the backbone as this ligand generates a rigid five-membered ring upon coordination to main group elements. The detailed synthesis of this ligand and its ability to support pnictenium cations (Pn = P, As and Sb) and their metal complexes were prepared, along with a discussion of spectroscopic properties. The synthesis of an N-heterocyclic carbene (NHC) with the benzo[1,2-b:5,6-b']dithiophene in the backbone, silver(I) transfer reagent and the BPh3 adduct were also synthesized. The donor strength of the NHC was measured from the carbonyl IR stretching frequencies of the isolated NHC-Rh(CO)Ư2Cl complex along with the resulting photophysical properties. The synthesis of a versatile diimine ligand containing adjacent 2,5-dimethyl(thienyl) rings in the backbone and its coordination to main group atoms was also achieved. This diazabutadiene acts as a precursor to a novel photochromic ligand that has been used to coordinate to both boron and phosphorus elements, along with the synthesis of a phosphorane side chain functionalized polymer. A study of the resulting photochromic properties of these compounds was completed and the following was observed: (i) The UV-visible absorption spectra of the ring closed isomer was dependent of the element present in the N, N'-chelating pocket; and (ii) incorporating the dithienylethene into a side functionalized phosphorane polymer greatly increased the ring closed/open reversibility and decreased the formation of by-products.
Book Synopsis Transition-metal Complexes Containing Nitrogen, Phosphorus, Or Sulfur by : R. B. King
Download or read book Transition-metal Complexes Containing Nitrogen, Phosphorus, Or Sulfur written by R. B. King and published by . This book was released on 1967 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of four years' work are outlined. Major advances were achieved in the following areas: (1) New arylazo derivatives of molybdenum, (2) new cyclopentadienyl metal nitrosyl derivatives of molybdenum and manganese, (3) new isonitrile derivatives of chromium, molybdenum, and tungsten, (4) trisacetonitrilemetal tricarbonyls of chromium, molybdenum and tungsten as preparative reagents, (5) novel complexes from trifluoroacetonitrile, (6) cyclic acyl derivatives with organonitrogen and organosulfur ligands, (7) metal carbonyl complexes of unsaturated phosphines, (8) new pi-CH3SCH2 derivatives, (9) new complexes with terminal and with bridging methylthio groups, (10) new complexes obtained from bis(trifluoromethyl)dithietene and disodium cis-ethylenedithiolate, (11) new chemistry of the metal carbonyl anions, (12) preparation and reactions of cyclopentadienyl-diiodocarbonylcobalt, (13) new pi-pentamethylcyclopentadienyl derivatives of various metals, and (14) new polynuclear cyclopentadienylmetal carbonyls of iron and cobalt. (Author).
Book Synopsis The Main Group and Transition Metal Complexes of Phosphoramides by : Zahra Shariatinia
Download or read book The Main Group and Transition Metal Complexes of Phosphoramides written by Zahra Shariatinia and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently, research on coordination chemistry of phosphoramide ligands has attracted great interest that is due to the important applications of the phosphoramide derivatives as pharmaceutical agents and also as catalysts in chemical reactions. The anticancer, antitumor, antibacterial, antifungal and antifouling properties of organotin(IV) complexes are also well known. Phosphoramides are potential ligands that can coordinate through phosphoryl oxygen atom to metal ions. Up to now, numerous coordination compounds including phosphoramide ligands especially carbacylamido phosphates (CAPh) with RC(O)NHP(O)(R')2 skeleton from main group and transition metals have been prepared and the complexes reveal diverse coordination numbers (C.N. = 4-7). Herein, the synthesis, spectroscopy and crystal structures of main group and transition metal coordination compounds containing phosphoramide ligands are studied.
Book Synopsis Studies of the Reactions of Metal Carbonyl Complexes with Phosphorus and Nitrogen-containing Ligans by : Khaled Ahmed F. Sellow
Download or read book Studies of the Reactions of Metal Carbonyl Complexes with Phosphorus and Nitrogen-containing Ligans written by Khaled Ahmed F. Sellow and published by . This book was released on 1998 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Structure and Reactivity of the Later Transition Metal Complexes Containing a Multidentate Phosphorus-nitrogen Hybrid Ligand by : Steven Michael Fornara Kennedy
Download or read book Synthesis, Structure and Reactivity of the Later Transition Metal Complexes Containing a Multidentate Phosphorus-nitrogen Hybrid Ligand written by Steven Michael Fornara Kennedy and published by . This book was released on 2000 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus (III) Tricationic and Dicationic Complexes by : Hannah Sinclair
Download or read book Phosphorus (III) Tricationic and Dicationic Complexes written by Hannah Sinclair and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coordination chemistry usually applies to transition metals, but has recently been extended to the p-block elements. For the pnictogen atoms (group 15), this type of coordination chemistry has already been applied to antimony and bismuth, where they behave as Lewis acceptor centres. However, complexes with nitrogen and phosphorus as Lewis acidic centres are rare, due to their relatively small atomic radii and inherent basic nature. Instead, these elements (Pn(III)) are typically observed as donor centres because they are better at donating their electron pair, than they are at accepting them. To enhance the Lewis acidity at the phosphorus and nitrogen centres, a cationic charge can be introduced by heterolytically abstracting a halide and replacing it with a weakly coordinating anion, providing more opportunities for new reactivity. The presence of a stereochemically active lone pair at the acceptor site also introduces new reactivity patterns to be explored. The formation of these main group coordination complexes opens doors to potential applications in catalysis, small molecule activation, or as material precursors. 2,2'-bipyridine (bipy) has been a prototypical ligand used in transition metal coordination chemistry due to its high basicity and oxidative resistance. This property has been exploited to enable a comprehensive study of a series of Pn(III) tricationic and dicationic complexes using 2,2'-bipyridine (bipy); 4,4'-di-tert-butyl-2,2'-bipyridine (tBu2bipy); 4-dimethylaminopyridine (DMAP); and other main group containing ligands.
Book Synopsis The Privileged Pincer-Metal Platform: Coordination Chemistry & Applications by : Gerard van Koten
Download or read book The Privileged Pincer-Metal Platform: Coordination Chemistry & Applications written by Gerard van Koten and published by Springer. This book was released on 2015-08-27 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics in pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors.
Book Synopsis Synthesis of Group 9 and 10 Metal Complexes Supported by Chelating Nitrogen-based Ligands and Mechanistic Studies of Their Role in Catalytic Transformations by : Jennifer Lauren McBee
Download or read book Synthesis of Group 9 and 10 Metal Complexes Supported by Chelating Nitrogen-based Ligands and Mechanistic Studies of Their Role in Catalytic Transformations written by Jennifer Lauren McBee and published by . This book was released on 2009 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Synthesis of Phosphorus Containing Ligands for the Formation of Iron Group Metal Complexes and Catalysts by : Peter E. Sues
Download or read book Design and Synthesis of Phosphorus Containing Ligands for the Formation of Iron Group Metal Complexes and Catalysts written by Peter E. Sues and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transition Metal Complexes of Phosphorus, Arsenic and Antimony Ligands by : Charles Andrew McAuliffe
Download or read book Transition Metal Complexes of Phosphorus, Arsenic and Antimony Ligands written by Charles Andrew McAuliffe and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Organometallic Chemistry by : Pedro J. Perez
Download or read book Advances in Organometallic Chemistry written by Pedro J. Perez and published by Academic Press. This book was released on 2020-03-17 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Organometallic Chemistry, Volume 73, the latest release in this longstanding serial, is known for its comprehensive coverage of topics in organometallic synthesis, reactions, mechanisms, homogeneous catalysis, and more. It is ideal for a wide range of researchers involved in organometallic chemistry, including synthetic protocols, mechanistic studies and practical applications. Specific chapters in this new release include Metal carbonyl promoted multicomponent coupling of alkyne for synthesis of heterocyclic compounds, Group 10 metal(0) complexes stabilized by phosphorus and carbon donor ligands, Synthesis of Nitrogen-containing Molecules via Transition Metal-Catalyzed Reactions on Isoxazoles, Anthraniils and Benzoisoxazoles, and more. Contains contributions from leading authorities in the field of organometallic chemistry Covers topics in organometallic synthesis, reactions, mechanisms, homogeneous catalysis, and more Informs and updates readers on the latest developments in the field Carefully edited to provide easy-to-read material
Book Synopsis Syntheses, Structures and Reactivity of the Group 6 and 7 Metal Complexes Containing Chelating Nitrogen Donor Ligands and Metal-Ligand Multiple Bonds by : 李富華
Download or read book Syntheses, Structures and Reactivity of the Group 6 and 7 Metal Complexes Containing Chelating Nitrogen Donor Ligands and Metal-Ligand Multiple Bonds written by 李富華 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Syntheses, Structures and Reactivity of the Group 6 and 7 Metal Complexes Containing Chelating Nitrogen Donor Ligands and Metal-ligand Multiple Bonds" by 李富華, Fu-wa, Lee, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled "SYNTHESES, STRUCTURES AND REACTIVITY OF THE GROUP 6 AND 7 METAL COMPLEXES CONTAINING CHELATING NITROGEN DONOR LIGANDS AND METAL-LIGAND MULTIPLE BONDS" submitted by Lee Fu Wa for the degree of Doctor of Philosophy at the University of Hong Kong in September, 1997. ____________________________________________________________________ [Cr(CRMe )Cl ] (CRMe =meso-2,3,7,11,12-pentamethyl-3,7,11,17- 3 2 3 2+ tetraazabicyclo[11.3.1]-heptadeca-1(17),13,15-triene), [Cr(CRMe )Cl(H O)], 3 2 2+ + [Cr(CRMe )Cl(CH CN)] and [Cr(CRMe )(N )(OH)] are prepared. Upon addition 3 3 3 3 2+ 2+ of PhI=O to solutions of [Cr(CRMe )Cl(CH CN)] and [Cr(CRMe )Cl(H O)] 3 3 3 2 respectively in CH CN, the UV-visible absorption spectra of the two mixtures show similar isosbestic spectral changes attributed to the formation of V 2+ [Cr (CRMe )Cl(O)] . Addition of PhP causes the immediate recovery of 3 3 2+ [Cr(CRMe )Cl(CH CN)] as the isosbestic changes are reversed. Irradiation of 3 3 [Cr(CRMe )(N )(OH)] in acetonitrile with UV-visible light gives an azide-free 3 3 product, the FAB-MS of which shows a molecular ion peak indicative of V + + ([Cr (CRMe )(N)]ClO ). The UV-visible spectra of [Cr(CRMe )Cl ], 3 4 3 2 2+ 2+ [Cr(CRMe )Cl(H O)] and [Cr(CRMe )Cl(CH CN)] measured in water are 3 2 3 3 3+ similar to that of [Cr(CRMe )(H O) ] . Results from the conductivity measurement 3 2 2 + 2+ show that in water, [Cr(CRMe )Cl ], [Cr(CRMe )Cl(H O)] and 3 2 3 2 2+ [Cr(CRMe )Cl(CH CN)] behave as 3:1 electrolytes. The species which exists in 3 3 3+ water is likely to be the di-aquo complex [Cr(CRMe )(H O) ] . 3 2 2 2+ 2+ [Cr(CRMe )Cl(H O)] and [Cr(CRMe )Cl(CH CN)] are both found to give a 3 2 3 3 reversible oxidation couple at +1.11 V vs. SCE in aqueous solutions at pH=1 which is assigned to Cr(III)/(IV). iii t + The bis(imido) complexes [(TACN)M(N Bu) Cl] (M=Cr, Mo; TACN=1,4,7-triazacyclononane) and their 1,4,7-trimethyl derivatives are prepared, the crystal structures of which reveal the trans influence of the imido group. These 0 +/0 d species display a quasi-reversible couple at potentials 0.86 - 1.20 V vs. Cp Fe in acetonitrile assignable to a imido ligand-centred oxidation. (Me TACN)Mo(CO), 1,4,7-Tri((S)-2-methylbutyl)-1,4,7-triazacyclononane 3 3 * * * (L ) and L Mo(CO) are synthesized. (Me TACN)Mo(CO) and L Mo(CO) show 3 3 3 3 +/0 reversible oxidation couples at -0.26 V and -0.24 V vs. Cp Fe in CH CN 2 3 I/0 respectively which are assigned to Mo . The comparable electronic effect of * Me TACN and L in this system is therefore implied. 2+ [(Me TACN) Mn (μ-O)(μ-OCOCH ) ] is prepared and found to mediate 3 2 2 3 2 aziridination of styrene, methylstyrene, cis- and trans-stilbene, 1,1-diphenylethene and norbornene by PhI=NTs in CH Cl at 25 C. The nitrene transfer to cis- and 2 2 trans-stilbene is found to be stereoselective to exclusively give the trans-aziridine product. + + [(Me TACN)(CO) M CPh] (M=Mo, W) and [(TACN)(CO) Mo CPh] 3 2 2 are prepared. [(Me TACN)(CO) M CPh] (M=Mo, W) exhibit a reversible 3 2 +/0 reduction couple at -2.15 V vs Fe Cp and an irreversible wave at 0.77 V vs +/0 Fe Cp, which are ascribed to a reduction centred at the phenyl ring and oxidation of the terminal CO respectively. Treatment of Cl(
