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Synthesis And Migratory Insertion Reactions Of Molybdenum And Tungsten Carbene Complexes
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Book Synopsis Synthesis and Migratory Insertion Reactions of Molybdenum and Tungsten Carbene Complexes by : Gary W. Bentley
Download or read book Synthesis and Migratory Insertion Reactions of Molybdenum and Tungsten Carbene Complexes written by Gary W. Bentley and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Migratory Insertion Reactions of Molybdenum and Tungsten Carbene Complexes by : Jayne E. Muir
Download or read book Migratory Insertion Reactions of Molybdenum and Tungsten Carbene Complexes written by Jayne E. Muir and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Migratory Insertion Reactions of Molybdenum and Tungsten Carbene Complexes by : Carin E. Tattershall
Download or read book Migratory Insertion Reactions of Molybdenum and Tungsten Carbene Complexes written by Carin E. Tattershall and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Synthesis and Reactions of Molybdenum(II) and Tungsten(II) Alkyne Complexes by : Elaine M. Armstrong
Download or read book The Synthesis and Reactions of Molybdenum(II) and Tungsten(II) Alkyne Complexes written by Elaine M. Armstrong and published by . This book was released on 1989 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Kristine Quinlan Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :378 pages Book Rating :4.3/5 ( download)
Book Synopsis Synthesis, Reactivity and Electronic Structure of Molybdenum and Tungsten Complexes by : Kristine Quinlan
Download or read book Synthesis, Reactivity and Electronic Structure of Molybdenum and Tungsten Complexes written by Kristine Quinlan and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 2002 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Studies of Mo and W Complexes for 2N Reduction by : Jia Min Chin
Download or read book Synthesis and Studies of Mo and W Complexes for 2N Reduction written by Jia Min Chin and published by . This book was released on 2010 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of monopyrroletriamine ligands [Arpyr(Ar')2]H3 of the form ArC4H2NHCH2N(CH2CH2NHAr')2 (Ar = 2,4,6-mesityl (Mes), 2,4,6-triisopropylphenyl (TRIP); Ar' = C6F5, 2-tolyl (o-tol), naphthyl, 3,5-(2,4,6-triisopropylphenyl)phenyl (HIPT), 3,5- dimethylphenyl, 3,5-di-tert-butylphenyl were synthesized. [Mespyr(C6F5)2]MoCl, ([Mespyr(C6F5)2]Mo = MesitylC4H2NCH2N(CH2CH2NC6F5)2) was prepared by reaction of [Mespyr(C6F5)2]H3 with MoCl4(THF)2 and base and [Mespyr(3,5-t-Bu)2]MoCl and [Mespyr(3,5- Me)2]MoCl (3,5-t-Bu=3,5-di-tert-butylphenyl, Me = 3,5-dimethylphenyl) were synthesized likewise. All three monochlorides are paramagnetic. [Mespyr(C6F5)2]MoNMe2, [[Mespyr(otol) 2]MoNMe2, [Mespyr(3,5-t-Bu)2]MoNMe2, [Mespyr(3,5-Me)2]MoNMe2 were synthesized by reaction of the ligands with Mo(NMe2)4. The resulting compounds are diamagnetic and range in color from teal blue to emerald green. These low spin monodimethylamide complexes exist in rapid equilibria with their high spin forms. [Mespyr(C6F5)2]MoN and [Mespyr(3,5-t-Bu)2]MoN were synthesized by reaction of their respective monochlorides with NaN3 and are yellow diamagnetic species. Reaction of [Mespyr(3,5-t-Bu)2]MoN with Et3OBF4 leads to {[Mespyr(3,5- t-Bu)2]MoNEt}BF4, also a diamagnetic yellow species. [Mespyr(C6F5)2]MoOTf is synthesized by the reaction of [Mespyr(C6F5)2]MoCl with AgOTf. Reduction of [Mespyr(3,5-t-Bu)2]MoCl with Na under N2 led to [Mespyr(3,5-t-Bu)2]MoNNNa(THF)x, several species with varying numbers of THF coordination, x. A single species can be obtained when [Mespyr(3,5-t- Bu)2]MoNNNa(THF)x is reacted with either NBu4Cl or 15-crown-5 ether to yield purple green 4 {[Mespyr(3,5-t-Bu)2]MoNN}NBu4 or [Mespyr(3,5-t-Bu)2]MoNNNa(15-c-5). All the diazenide species are diamagnetic. Oxidation of the diazenide with AgOTf yields [Mespyr(3,5-t- Bu)2]Mo(N2). [Mespyr(3,5-t-Bu)2]Mo(CO) is synthesized by exposure of [Mespyr(3,5-t- Bu)2]Mo(N2) to CO. Reaction of [Mespyr(3,5-t-Bu)2]MoCl with NaBPh4 and NH3 yields {[Mespyr(3,5-t-Bu)2]Mo(NH3)}BPh4. Catalytic runs employing [Mespyr(3,5-t-Bu)2]MoN as the catalyst yielded one equivalent of NH3. A triamidoamine ligand [(HIPTNCH2CH2CH2)3N]3- was synthesized and metalated with MoCl4(THF)2 to produce [(HIPTNCH2CH2CH2)3N]MoCl ([HIPTtrpn]MoCl). Reduction of [HIPTtrpn]MoCl by KC8 under an atmosphere of dinitrogen leads to the green species [HIPTtrpn]MoNNK which can be oxidized by ZnCl2(dioxane) to produce [HIPTtrpn]Mo(N2). Other complexes synthesized include {[HIPTtrpn]Mo(NH3)}+ salts and [HIPTtrpn]Mo(CO). Xray studies were carried out on [HIPTtrpn]MoN and {[HIPTtrpn]Mo(NH3)}BAr'4. This system is not catalytic for the reduction of dinitrogen to ammonia and studies were carried out to elucidate the reasons. Oxidation studies were carried out on [HIPTN3N]Mo(N2) and [HIPTN3N]W(N2) ([HIPTN3N] = [(HIPTNCH2CH2)3N]3- ). The rate of conversion of [HIPTN3N]Mo(NH3) to [HIPTN3N]Mo(N2) was studied and found to be increased in the presence of BPh3. [HIPTN3N]Mo(N2) conversion to [HIPTN3N]Mo(CO) was found to be dependent on CO pressure. Protonation studies of [HIPTN3N]Mo(N2) were also carried out. Studies of [HIPTN3N]MoNNH decomposition showed that decomposition is not base-catalyzed. [HIPTN3N]W(CO) was synthesized by exposure of [HIPTN3N]W(N2) to CO. It is a green, paramagnetic compound and its use as a standard (for determining relative concentrations of other compounds in the IR sample) in IR spectroscopic studies appears to be promising. [HIPTN3N]MoCNH2 was synthesized by addition of acid and reducing agent to [HIPTN3N]MoCN and is a yellow, diamagnetic compound. Two triamidophosphine ligands, triHIPTamine and tri-n-Buamine were synthesized. Metalation of Zr(NMe2)4 with these ligands leads to formation of pn3HIPTZrNMe2 and pn3-n- BuZrNMe2, both diamagnetic, pale yellow complexes.
Book Synopsis The Synthesis, Characterization, and Reactivity of Molybdenum and Tungsten - Iron - Sulfur Complexes by : Harry Craig Silvis
Download or read book The Synthesis, Characterization, and Reactivity of Molybdenum and Tungsten - Iron - Sulfur Complexes written by Harry Craig Silvis and published by . This book was released on 1981 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Novel Strategies for the Synthesis of Tungsten(VI) and Molybdenum(VI) Imido/Oxo Alkylidene NHC Complexes and Their Application in Ring-Opening Metathesis Polymerization by : Janis Musso
Download or read book Novel Strategies for the Synthesis of Tungsten(VI) and Molybdenum(VI) Imido/Oxo Alkylidene NHC Complexes and Their Application in Ring-Opening Metathesis Polymerization written by Janis Musso and published by Cuvillier. This book was released on 2022-05-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, the synthesis of neutral and cationic group(VI) imido/oxo alkylidene N-heterocyclic carbene (NHC) complexes that tolerate protic functional groups and aldehydes was reported. Unprecedented turnover numbers of up to 1.2 million were found for their silica-supported representatives. Some group(VI) alkylidene NHC complexes even display stability towards moisture and air. Coordination of the NHC to tungsten imido bistriflate precursor complexes, however, can lead to undesired side reactions. This work consequently aimed at the development of novel, more efficient routes to neutral and cationic tungsten imido/oxo alkylidene NHC complexes. In addition, some molybdenum imido alkylidene NHC complexes were targeted. Thereby, the scope of synthetically accessible complexes was broadened and, subsequently, their reactivity in ring-opening metathesis polymerization (ROMP) was probed. Those complexes were used as thermally latent initiators for the ROMP of dicyclopentadiene. Precise determination of the onset temperature of polymerization was achieved via monitoring with differential scanning calorimetry. Furthermore, the selectivity of novel complexes was tested for the formation of stereoregular polymers through ROMP of enantiomerically pure norbornene derivatives, which allowed for the synthesis of up to 98% trans-isotactic or cis-syndiotactic polymers depending on the steric demand of the imido and the alkoxide ligand.
Book Synopsis Synthesis, Characterisation and Reactions of Neutral and Cationic Complexes of Molybdenum (II) and Tungsten (II) by : Deborah Sian Evans
Download or read book Synthesis, Characterisation and Reactions of Neutral and Cationic Complexes of Molybdenum (II) and Tungsten (II) written by Deborah Sian Evans and published by . This book was released on 2000 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Structure, and Applications of Metallacyclic Alkylidene Complexes of Molybdenum and Tungsten by : Kapil Shyam Lokare
Download or read book Synthesis, Structure, and Applications of Metallacyclic Alkylidene Complexes of Molybdenum and Tungsten written by Kapil Shyam Lokare and published by . This book was released on 2009 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactivity of Molybdenum and Tungsten Bis-tri-tert-butylsiloxide Imido and Oxo Complexes by : Devon Charles Rosenfeld
Download or read book Synthesis and Reactivity of Molybdenum and Tungsten Bis-tri-tert-butylsiloxide Imido and Oxo Complexes written by Devon Charles Rosenfeld and published by . This book was released on 2005 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Solid-state Reactions of Substituted Cyclopentadienyl Complexes of Rhenium, Tungsten and Molybdenum by : Lin Cheng
Download or read book Synthesis and Solid-state Reactions of Substituted Cyclopentadienyl Complexes of Rhenium, Tungsten and Molybdenum written by Lin Cheng and published by . This book was released on 1997 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Investigation of Some New Complexes of Molybdenum (II) and Tungsten (II) Containing Sulphur Donor Ligands by : Sharman Donna Harris
Download or read book Synthesis and Investigation of Some New Complexes of Molybdenum (II) and Tungsten (II) Containing Sulphur Donor Ligands written by Sharman Donna Harris and published by . This book was released on 1995 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization, and Some Novel Reactions of Seven Coordinate Complexes of Molybdenum (II) and Tungsten (II) by : Christen Michael Giandomenico
Download or read book Synthesis, Characterization, and Some Novel Reactions of Seven Coordinate Complexes of Molybdenum (II) and Tungsten (II) written by Christen Michael Giandomenico and published by . This book was released on 1981 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Organometallic Chemistry II, Volume 14 by : Edward W. Abel
Download or read book Comprehensive Organometallic Chemistry II, Volume 14 written by Edward W. Abel and published by Elsevier. This book was released on 2002-09-10 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication Comprehensive Organometallic Chemistry in 1982, studies on the chemistry of molecules with carbon-metal bonds have continued to expand rapidly. This is due to many factors, ranging from the sheer intellectual challenge and excitement provided by the continuing production of novel results, which demand new ideas, through to the successful application of organometallic species in organic syntheses, the generation of living catalysts for polymerization, and the synthesis of precursors for materials employed in the electronic and ceramic industries. These factors led to the publication of the updated Comprehensive Organometallic Chemistry II. The original work serves as a basis for new volumes, focusing on organometallic chemistry reported since 1982, with reference back to the original work when necessary. For ease of use the new volumes maintain the same general structure as employed previously but reflect the changes in substance and direction the field has undergone in the last ten years. This book will serve as a pivotal reference point for new work and will function to generate new ideas and perceptions for the continued advance of what will surely continue as a vibrant area of chemistry.
Book Synopsis Synthesis, Characterization and Reactivity of Molybdenum and Tungsten Imido Complexes of Relevance to Alkene Dimerization by : William R. H. Wright
Download or read book Synthesis, Characterization and Reactivity of Molybdenum and Tungsten Imido Complexes of Relevance to Alkene Dimerization written by William R. H. Wright and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies on Synthesis, Properties and Reactions of High-valent Oxo Molybdenum and Tungsten Complexes by : Fu-Min Su
Download or read book Studies on Synthesis, Properties and Reactions of High-valent Oxo Molybdenum and Tungsten Complexes written by Fu-Min Su and published by . This book was released on 1986 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: