Tetrakis[diamminesilver(I)] bis(2-hydroxy-5-methylbenzene-1,3-disulfonate) monohydrate

Li-Wei Zhang,Seik Weng Ng,Shan Gao

doi:10.1107/s1600536811048124

Abstract

In the crystal structure of the title salt, [Ag(NH3)2]4(C7H6O7S2)2·H2O, the four independent AgI complex cations all lie on special positions of m site symmetry, as do the two independent 2-hydroxy-5-methylbenzene-1,3-disulfonate anions. The AgI cations exist in an almost linear coordination geometry [N—Ag—N = 175.2 (2), 178.08 (16), 175.8 (2) and 178.20 (19)°]. The water molecule is disordered about a mirror plane. Two independent complex cations are linked by an Ag⋯Ag interaction of 3.3151 (1) Å, furnishing a linear [Ag(NH3)2]n polycationic chain running along b. The free complex cations, polycationic chain and 2-hydroxy-5-methylbenzene-1,3-disulfonate anions interact via N—H⋯O and O—H⋯O hydrogen bonds, forming a three-dimensional network.

Highlights

In the crystal structure of the title salt, [Ag(NH3)2]4(C7H6O7S2)2ÁH2O, the four independent AgI complex cations all lie on special positions of m site symmetry, as do the two independent 2-hydroxy-5-methylbenzene-1,3-disulfonate anions
Two independent complex cations are linked by an AgÁ Á ÁAg interaction of 3.3151 (1) A, furnishing a linear [Ag(NH3)2]n polycationic chain running along b
Symmetry codes: (iv) x, y−1, z; (v) x−1/2, y−1/2, z; (vi) −x+1/2, −y+3/2, −z+1; (vii) −x+1, −y+2, −z+1; (viii) −x+1, y+1, −z+1

Summary

Structure Reports Online

Key indicators: single-crystal X-ray study; T = 293 K; mean (C–C) = 0.007 A; disorder in main residue; R factor = 0.037; wR factor = 0.104; data-to-parameter ratio = 15.2. In the crystal structure of the title salt, [Ag(NH3)2]4(C7H6O7S2)2ÁH2O, the four independent AgI complex cations all lie on special positions of m site symmetry, as do the two independent 2-hydroxy-5-methylbenzene-1,3-disulfonate anions. The AgI cations exist in an almost linear coordination geometry [N—Ag—N = 175.2 (2), 178.08 (16), 175.8 (2) and 178.20 (19)]. Two independent complex cations are linked by an AgÁ Á ÁAg interaction of 3.3151 (1) A , furnishing a linear [Ag(NH3)2]n polycationic chain running along b. The free complex cations, polycationic chain and 2-hydroxy-5-methylbenzene-1,3-disulfonate anions interact via N—HÁ Á ÁO and O—HÁ Á ÁO hydrogen bonds, forming a three-dimensional network

Data collection

DÁ Á ÁA

Crystal data