Acta Cryst. (2009). E65, m1434-m1435  [ doi:10.1107/S1600536809042342 ]

Poly[[diaquabis(₂-isonicotinato-²N:O)bis(₃-isonicotinato-³N:O:O')neodymium(III)disilver(I)] nitrate monohydrate]

Q.-G. Zhan, J.-X. Huang and R.-H. Zeng

Abstract: In the title complex, {[Ag₂Nd(C₆H₄NO₂)₄(H₂O)₂]NO₃·H₂O}_n, the Nd^III ion is coordinated by eight O atoms from six isonicotinate ligands and two water molecules in a distorted square antiprismatic geometry. Each Ag^I ion is coordinated by two N atoms from two different isonicotinate ligands. The crystal structure exhibits a two-dimensional heterometallic polymeric layer. O-HO hydrogen bonds involving the coordinated and uncoordinated water molecules and intralayer - interactions between the pyridine rings [centroid-centroid distances = 3.571 (2) and 3.569 (2) Å] are observed. Each layer interacts with two neighboring ones via AgO(H₂O) contacts and interlayer - interactions [centroid-centroid distances = 3.479 (3) to 3.530 (3) Å], leading to a three-dimensional supramolecular network.

Online 28 October 2009

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