Acta Cryst. (2007). E63, m1377-m1378  [ doi:10.1107/S1600536807017369 ]

Poly[bis(acetone)bis[-4-[(5-chloro-2-oxidophenyl)diazenyl]-3-oxido-N-phenylnaphthalene-2-carboxamidato]sodium(I)ferrate(III)]

J. Mizuguchi, Y. Sato and K. Uta

Abstract: The title compound, [FeNa(C₂₃H₁₄ClN₃O₃)₂(C₃H₆O)₂]_n, has a skeleton of an azo-Fe^III anion complex with a sodium cation, used widely as a charge-control agent (CCA) of the negative type in electrophotography. In the Fe^III anion-complex, the Fe^III atom is coordinated by four carbonyl O atoms and two N atoms of the diazo groups from two azo ligands lying cis to each other. There are two N-HO intramolecular hydrogen bonds between the NH group and the carbonyl O atom. In the crystal structure, there exists a sodium-cation dimer bridged by the carbonyl O atoms at the periphery of the anion complex. An interesting aspect of this structure is that each sodium cation unites three different Fe-anion complexes through the carbonyl O atom, generating a quasi-two-dimensional network parallel to the (001) plane. At the same time, the sodium cation accommodates two acetone molecules, linked through the carbonyl O atom.

Online 20 April 2007

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