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Acta Cryst. (2013). E69, m597
[ doi:10.1107/S1600536813027402 ]

catena-Poly[[bis­(nitrato-[kappa]2O,O')barium]-bis­([mu]-L-histidine-[kappa]3O,O':O]

P. Arularasan, G. Chakkaravarthi and R. Mohan

Abstract: In the polymeric title compound, [Ba(NO3)2(C6H9N3O2)2]n, the BaII atom is located on a crystallographic twofold axis and is coordinated by ten O atoms. Six are derived from two zwitterionic L-histidine mol­ecules that simultaneously chelate one BaII atom and bridge to another. The remaining four O atoms are derived from two chelating nitrates. The mol­ecules assemble to form a chain along [010]. In the crystal, chains are linked via N-H...O and N-H...N hydrogen bonds, generating a three-dimensional network.


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