名称:
Synthesis and structural characterization of adducts of silver(I) carboxylate salts AgX (X=CF3COO, CH3COO) with ER3 (E=P, As; R=Ph, cy, o-tolyl) and oligodentate aromatic bases derivative of 2,2′-bipyridyl, L, AgX:PR3:L (1:1:1)
摘要:
Twenty-one adducts of the form AgX:ER3:L (1: 1: 1) (X = CF3COO 'tfa'), CH3COO ('ac'), E = P, As; R = Ph, cy, o-tolyl; L = 2,2'bipyridyl ('bpy')-based ligand) have been synthesized and characterized by analytical, spectroscopic (IR, far-IR, H-1, F-19 and P-31 NMR) and single crystal X-ray diffraction studies. The resulting complexes are predominantly of the form [(R3E)AgL]X+-, with a trigonal EAgN2 coordination environment, the planarity of which may be perturbed by the approach of anion or solvent. The carboxylate anions have been found to be uni-, or semi-bidentate, or also completely ionic, as in the complexes [Ag(PPh3)(bpy)(H2O)](tfa) and [Ag(PPh3)(dpk (.) H2O(tfa) ('dpk - H2O' = bis(2-pyridyl)ketone (hydrated)). The complexes Agac:PPh3:dpa (1: 1: 1) and Agac:P(o-tol)(3): dpa:MeCN (1: 1: 1: 1) are dinuclear, with bridging unidentate acetate and terminal unidentate dpa ('dpa' = bis(2-pyridyl)amine). (c) 2006 Published by Elsevier B.V.