Synthesis and Structural Studies of N- and P-donor Ligands in Chromium(III) Complexes PDF Download
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Author: Nicholas Frederick Brennan
Publisher:
ISBN:
Category : Chromium compounds
Languages : en
Pages : 536
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Book Description
Author: Nicholas Frederick Brennan
Publisher:
ISBN:
Category : Chromium compounds
Languages : en
Pages : 536
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Author: Tonja (Tonja Kay) Lynde-Kernell
Publisher:
ISBN:
Category :
Languages : en
Pages : 312
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Author: Phunrawie Sroisuwan
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Ahmad Rostam-Kolayi
Publisher:
ISBN:
Category :
Languages : en
Pages : 98
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Author: Delong Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages : 606
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Author: Jonas Michael Schönle
Publisher:
ISBN:
Category :
Languages : en
Pages : 174
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Author: Jayne Jubb
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ISBN:
Category :
Languages : en
Pages :
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Author: Morgan C. MacInnis
Publisher:
ISBN:
Category :
Languages : en
Pages : 504
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Book Description
ABSTRACT continued: These transfer hydrogenation studies are among the first catalytic studies of silyl-pincer complexes and establish [R-PSiP]M species as viable candidates for catalysis. The synthesis and reactivity of 4- and 5-coordinate RuII complexes featuring the [Cy-PSiP] ligand were explored. Reaction of [Cy-PSiP]H with [(p-cymene)RuCl2]2 in the presence of NEt3 and PCy3 resulted in the formation of ([Cy-PSiP]RuCl)2, which serves as a precursor to a series of unprecedented 4-coordinate, formally 14-electron [Cy-PSiP]RuX (X = NHAr, N(SiMe3)2, OtBu) complexes that feature an unusual trigonal pyramidal geometry at Ru. The reactivity of these novel diamagnetic complexes is described, including the reaction of [Cy-PSiP]RuOtBu with amine-boranes resulting in the formation of rare bis(?-BH) complexes. Computational studies confirmed the key role of the strongly ?-donating silyl group of the Cy-PSiP ligand in facilitating the synthesis of such low-coordinate Ru species and enforcing the unusual trigonal pyramidal geometry. The mechanism of ammonia-borane activation was also examined computationally. Lastly, the synthesis and structural characterization of PdII complexes supported by the pincer-like bis(amino)phosphido ligand [?3-(2-Me2NC6H4)2P]- ([NPN]) is described. Examples of ?1-, ?2-, and ?3-NPN coordination to Pd are described, as is the catalytic activity of ([NPN]PdX)2 (X = Cl, OAc, OTf) complexes in the Heck olefin arylation reaction. In an effort to discourage the formation of phosphido-bridged dinuclear complexes, pre-coordination of the Lewis acid BPh3 to [NPN] was pursued. Upon reaction of [N(P?BPh3)N]K with [PdCl(C3H5)]2, the ?1-allyl complex [?3-N(P?BPh3)N]Pd(?1-C3H5) was isolated, which establishes the coordination of a Lewis acid to the phosphido donor of the [NPN] ligand as a viable strategy for encouraging the formation of mononuclear ?3-NPN complexes.
Author: Vladimir F. Kuznetsov
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 0
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Author: Costisor Otilia
Publisher: World Scientific
ISBN: 9814482889
Category : Science
Languages : en
Pages : 307
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Book Description
This book surveys the relatively new area of the synthesis of organic ligands when metal ions act as a template. In the last fifty years this field has undergone an explosive development, marked by a great amount of literature. The material in the book has been arranged according to the type of chemical reaction involved. In this frame, the basic principles of metal template reactions and the shape of the molecules are considered. Designed to satisfy the demands of students, young researchers doing their PhDs, and those working in the field of coordination chemistry, the book details the role of the metal ions and the specific properties of the formed complexes.Metal Mediated Template Synthesis of Ligands offers a comprehensive analysis with wide-ranging references and provides an extensive overview of research on metal-directed organic ligands over the past five decades.
