Different coordination modes of the thiosaccharinate anion in dinuclear and one dimensional polymeric silver–azine complexes
摘要:
The effect of substituted pyridines bases upon the coordination of thiosaccharinate (tsac, C(7)H(4)NO(2)S(2)(-) in ternary silver complexes is analyzed. Four crystalline silver-substituted pyridine complexes with tsac as a coordinating counter anion, [Ag(tsac)(3-methylpyridine)(2)](n), [Ag(2)(tsac)(2)(4-methylpyridine)](n), [Ag(2)(tsac)(2)(quinoline)(2)] and [Ag(tsac)(4-methyloxypyridine)](n) were synthesized and characterized by means of spectroscopic (IR and Raman, UV-Vis, and (1)H and (13)C NMR) and X-ray diffraction techniques. The thiosaccharinate anion showed its versatility coordinating to the metal in each complex by a different way. In the 3-Mepy complex it was coordinated in a mu(2)-S mode and in the 4-MeOpy complex it was bound in a mu(3)-S form both resulting in polymeric chains. In the 4-Mepy complex the anion was bound in a mu(2)-S,N head to head mode and in the quinoline complex in a mu(2)-S,N head to tail mode, both showing dinuclear arrangements. (C) 2009 Elsevier Ltd. All rights reserved.