Hexakis(1H-imidazole-κN3)cobalt(II) triaquatris(1H-imidazole-κN3)cobalt(II) bis(naphthalene-1,4-dicarboxylate)

Jing-Jing Nie,Duan-Jun Xu,Jun-Hua Li

doi:10.1107/s1600536809023794

Jing-Jing Nie, Duan-Jun Xu + Show 1 more

Open Access

https://doi.org/10.1107/s1600536809023794

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Abstract

The asymmetric unit of the title compound, [Co(C3H4N2)6][Co(C3H4N2)3(H2O)3](C12H6O4)2, contains two halves of crystallographically independent CoII complex cations, each assuming a distorted octahedral geometry, and one uncoordinated naphthalene-1,4-dicarboxylate dianion. One CoII cation is located on an inversion center and is coordinated by six imidazole molecules, while the other CoII cation is located on a twofold rotation axis and is coordinated by three water and three imidazole molecules. The uncoordinated naphthalene-1,4-dicarboxylate dianion links both CoII complex cations via O—H⋯O and N—H⋯O hydrogen bonding. One imidazole ligand is equally disordered over two sites about a twofold rotation axis, while the coordinated N atom of the imidazole is located on the twofold rotation axis. One water O atom has site symmetry 2.

Highlights

The asymmetric unit of the title compound, [Co(C3H4N2)6][Co(C3H4N2)3(H2O)3](C12H6O4)2, contains two halves of crystallographically independent CoII complex cations, each assuming a distorted octahedral geometry, and one uncoordinated naphthalene-1,4-dicarboxylate dianion
One CoII cation is located on an inversion center and is coordinated by six imidazole molecules, while the other CoII cation is located on a twofold rotation axis and is coordinated by three water and three imidazole molecules
One imidazole ligand is disordered over two sites about a twofold rotation axis, while the coordinated N atom of the imidazole is located on the twofold rotation axis

Summary

Structure Reports Online

The asymmetric unit of the title compound, [Co(C3H4N2)6][Co(C3H4N2)3(H2O)3](C12H6O4), contains two halves of crystallographically independent CoII complex cations, each assuming a distorted octahedral geometry, and one uncoordinated naphthalene-1,4-dicarboxylate dianion. The uncoordinated naphthalene1,4-dicarboxylate dianion links both CoII complex cations via O—HÁ Á ÁO and N—HÁ Á ÁO hydrogen bonding. One imidazole ligand is disordered over two sites about a twofold rotation axis, while the coordinated N atom of the imidazole is located on the twofold rotation axis. One water O atom has site symmetry 2. Related literature For general background to the nature of - stacking, see: Su & Xu (2004); Xu et al (2007). See: Derissen et al (1979); Li et al (2008a,b)

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