Crystal structures of {[Cu(Lpn)2][Fe(CN)5(NO)]·H2O}n and {[Cu(Lpn)2]3[Cr(CN)6]2·5H2O}n [where Lpn = (R)-propane-1,2-di­amine]: two heterometallic chiral cyanide-bridged coordination polymers

Acta Crystallographica Section E: Crystallographic Communications

Sereda, O.¹  Stoeckli-Evans, H.² 

[1] Institute of Physics, University of Neuchâtel, Rue Emile-Argand 11, CH-2000 Neuchâtel, Switzerland

关键词: CRYSTAL STRUCTURE;    CHIRAL;    BIMETALLIC;    CYANIDE-BRIDGED;    (R)-PROPANE-1,2-DIAMINE;    COORDINATION POLYMERS;    TWO-DIMENSIONAL NETWORK;    THREE-DIMENSIONAL FRAMEWORK;    HYDROGEN BONDING;   

DOI  :  10.1107/S2056989015005253

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The title compounds, catena-poly[[[bis­[(R)-propane-1,2-di­amine-κ2N,N′]copper(II)]-μ-cyanido-κ2N:C-[tris­(cyanido-κC)(nitroso-κN)iron(III)]-μ-cyanido-κ2C:N] monohydrate], {[Cu(Lpn)2][Fe(CN)5(NO)]·H2O}n, (I), and poly[[hexa-μ-cyanido-κ12C:N-hexa­cyanido-κ6C-hexa­kis­[(R)-propane-1,2-di­amine-κ2N,N′]dichromium(III)tricopper(II)] penta­hydrate], {[Cu(Lpn)2]3[Cr(CN)6]2·5H2O}n, (II) [where Lpn = (R)-propane-1,2-di­amine, C3H10N2], are new chiral cyanide-bridged bimetallic coordination polymers. The asymmetric unit of compound (I) is composed of two independent cation–anion units of {[Cu(Lpn)2][Fe(CN)5)(NO)]} and two water mol­ecules. The FeIII atoms have distorted octa­hedral geometries, while the CuII atoms can be considered to be penta­coordinate. In the crystal, however, the units align to form zigzag cyanide-bridged chains propagating along [101]. Hence, the CuII atoms have distorted octa­hedral coordination spheres with extremely long semicoordination Cu—N(cyanido) bridging bonds. The chains are linked by O—H⋯N and N—H⋯N hydrogen bonds, forming two-dimensional networks parallel to (010), and the networks are linked via N—H⋯O and N—H⋯N hydrogen bonds, forming a three-dimensional framework. Compound (II) is a two-dimensional cyanide-bridged coordination polymer. The asymmetric unit is composed of two chiral {[Cu(Lpn)2][Cr(CN)6]}− anions bridged by a chiral [Cu(Lpn)2]2+ cation and five water mol­ecules of crystallization. Both the CrIII atoms and the central CuII atom have distorted octa­hedral geometries. The coordination spheres of the outer CuII atoms of the asymmetric unit can be considered to be penta­coordinate. In the crystal, these units are bridged by long semicoordination Cu—N(cyanide) bridging bonds forming a two-dimensional network, hence these CuII atoms now have distorted octa­hedral geometries. The networks, which lie parallel to (10-1), are linked via O—H⋯O, O—H⋯N, N—H⋯O and N—H⋯N hydrogen bonds involving all five non-coordinating water mol­ecules, the cyanide N atoms and the NH2 groups of the Lpn ligands, forming a three-dimensional framework.

【 授权许可】

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