Acta Cryst. (2012). E68, m1540-m1541
[ doi:10.1107/S1600536812046090 ]

Poly[[[₃-(E)-N-(pyridin-4-ylmethylidene)hydroxylaminato-³O:N:N'][₂-(E)-N-(pyridin-4-ylmethylidene)hydroxylamine-²N:N'][(E)-N-(pyridin-4-ylmethylidene-N)hydroxylamine]disilver(I)] nitrate]

S. Gao and S. W. Ng

Abstract: The title coordination polymer, {[Ag₂(C₆H₅N₂O)(C₆H₆N₂O)₂]NO₃}_n, features a deprotonated N-(pyridin-4-ylmethylidene)hydroxylaminate anion and two neutral N-(pyridin-4-ylmethylidene)hydroxylamine molecules in the asymmetric unit. The anion connects three Ag^I atoms through its O and two N-donor atoms. One neutral ligand functions in a monodentate mode; the other functions in a bridging mode, binding though its two N atoms. The coordination geometry of the two independent metal atoms is T-shaped; the manner of bridging gives rise to a layer motif parallel to (100). In the crystal, the nitrate ion is disordered over two positions in a 1:1 ratio, and is sandwiched between adjacent layers. O-HO hydrogen bonding is present between nitrate ions and layers, and also between adjacent layers.

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