Solid state structural and solution studies on the formation of a flexible cavity for anions by copper(I) and 1,2-bis(diphenylphosphino)ethane
作者： D Saravanabharathi , Monika , Paloth Venugopalan , Ashoka G Samuelson
DOI: 10.1016/S0277-5387(02)01189-0
关键词: Chelation 、 Stoichiometry 、 Solid-state 、 Dication 、 1,2-Bis(diphenylphosphino)ethane 、 Copper 、 Denticity 、 Crystallography 、 Stereochemistry 、 Steric effects 、 Chemistry
摘要: Copper(l) complexes of 1,2-bis(diphenylphosphino)ethane (dppe) with a stoichiometry Cu-2(dppe)(3)(X)(2) [X- = CN- (1), SCN- (2), NO3- (3)] are obtained from direct reactions CuX and dppe. The structurally spectroscopically (NMR IR) characterized. structure the [Cu-2(dPPe)(3)](2+) dication is similar to structural motif observed in many other chelating dppe bridging connecting two copper centers. In 1 -3, anions confined cavity formed by phosphines which force monodentate coordination mode despite predominant bidentate/bridging character anions. angles rather than thermochemical radii dictate steric requirement While solution behavior 3, nitrate, studied earlier, pseudohalides exhibit new behavior. (C) 2002 Elsevier Science Ltd. All rights reserved.
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