Synthesis and crystal structure of the silver(I) alkyl species, [{2-(Me3Si)2C(Ag)C5H4N}2], a dimeric compound void of electron-deficient bonding
作者:Rocco I. Papasergio、Colin L. Raston、Allan H. White
DOI:10.1039/c39840000612
日期:——
The silver (I) alkyl complex [2-(Me3Si)2C(Ag)C5H4N}2], prepared by the reaction of the analogous lithium alkyl with AgBF4 in tetrahydrofuran, is a binuclear complex in which the metal ion is not involved in electron-deficientbonding, being bound by a carbon atom at 2.154(5)Å and a nitrogen atom of a centrosymmetrically related ligand at 2.160(5)Å; the Ag ⋯ Ag′ separation is 2.654 (1)Å.
Novel monoanionic di-N,N′-centred chelating ligands and their C1 and C2 symmetrical zirconium complexes
作者:Berth-Jan Deelman、Peter B Hitchcock、Michael F Lappert、Hung-Kay Lee、Wing-Por Leung
DOI:10.1016/0022-328x(95)06108-9
日期:1996.5
The novel lithium complexes [LiN(SiMe(3))C(Ph)C(R)(C5H4N-2)}](2) (R = H or SiMe(3)) and LiN(SiMe(3))C(Ph)C(R)(C9H6N-2)} (R = H or SiMe(3)), prepared from PhCN and [LiC(SiMe(3))(R)(C5H4N-2)}](2) or LiC(SiMe(3))(R)(C9H6N-2)}, react with ZrCl4 to afford racemic complexes [ZrN(SiMe(3))C(Ph)C(R)(C5H4N-2)}Cl-2(2)] (R = H or SiMe(3), 3b) and [ZrN(SiMe(3))C(Ph)C(R)(C9H4N-2)}Cl-2(2)], respectively. Conproportionation of ZrCl4 and 3b or 4b afforded [ZrN(SiMe(3))C(Ph)C(SiMe(3))(C5H4N-2)}Cl-3] and [ZrN(SiMe(3))C(Ph)C(SiMe(3))(C9H6N-2)}Cl-3], respectively. The compounds are characterised by NMR spectroscopy and X-ray data are provided for 3b.