Poly[[diaqua-bis-(?(3)-isonicotinato-?N:O:O')bis-(?(2)-isonicotinato-?N:O)gadolinium(III)disiliver(I)] nitrate monohydrate].

ABSTRACT: In the title compound, {[Ag(2)Gd(C(6)H(4)NO(2))(4)(H(2)O)(2)]NO(3)·H(2)O}(n), the Gd(III) ion is coordinated by eight O atoms from six isonicotinate ligands and two water mol-ecules in a distorted square anti-prismatic geometry. Two Ag(I) ions are each bonded to two N atoms from two isonicotinate ligands in a linear or bow-like fashion [N-Ag-N angles = 178.6?(2) and 147.1?(2)°]. These metal ions are connected by the isonicotin-ate ligands into a layer parallel to (010). O-H?O hydrogen bonds donated by the coordinated and uncoordinated water mol-ecules and intra-layer ?-? stacking inter-actions between the pyridine rings [centroid-centroid distances = 3.551?(4) and 3.555?(4)?Å] are observed. The layers inter-act with each other by inter-layer Ag?O(aqua) contacts [2.731?(4)?Å] and ?-? stacking inter-actions between the pyridine rings [centroid-centroid distances = 3.466?(3) and 3.516?(3)?Å], resulting in the formation of a three-dimensional supra-molecular structure.

SUBMITTER: Fan LQ 

PROVIDER: S-EPMC2983374 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature