Poly[bis(μ2-4,4′-bipyridine)bis(3-nitrobenzoato)cobalt(II)]

Shih-Chen Hsu,Chia-Her Lin,Pei-Hsuan Chiang

doi:10.1107/s1600536809039786

Shih-Chen Hsu, Chia-Her Lin + Show 1 more

Open Access

https://doi.org/10.1107/s1600536809039786

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Abstract

The hydrothermal reaction of cobalt nitrate with 4,4′-bipyridine and 3-nitrobenzoic acid lead to the formation of the title complex, [Co(C7H4NO4)2(C10H8N2)2]n. In the crystal structure, the CoII atoms are coordinated by two terminal carboxylate anions and four 4,4′-bipyridine ligands within slightly distorted octahedra. The CoII atom and one of the two independent 4,4′-bipyridine ligands are located on a twofold rotation axis, while the second independent 4,4′-bipyridine molecule is located on a centre of inversion. One of the two rings of one 4,4′-bipyridine ligand is disordered over two orientations and was refined using a split model [occupancy ratio 0.68 (2):0.32 (2)]. The CoII atoms are connected by the 4,4′-bipyridine ligands into layers, which are located parallel to the ab plane.

Highlights

The hydrothermal reaction of cobalt nitrate with 4,40 bipyridine and 3-nitrobenzoic acid lead to the formation of the title complex, [Co(C7H4NO4)2(C10H8N2)2]n
The CoII atoms are coordinated by two terminal carboxylate anions and four 4,40 -bipyridine ligands within slightly distorted octahedra
The CoII atom and one of the two independent 4,40 -bipyridine ligands are located on a twofold rotation axis, while the second independent 4,40 -bipyridine molecule is located on a centre of inversion

Summary

Structure Reports

Key indicators: single-crystal X-ray study; T = 295 K; mean (C–C) = 0.002 Å; disorder in main residue; R factor = 0.030; wR factor = 0.085; data-to-parameter ratio = 15.9. The CoII atoms are coordinated by two terminal carboxylate anions and four 4,40 -bipyridine ligands within slightly distorted octahedra. The CoII atom and one of the two independent 4,40 -bipyridine ligands are located on a twofold rotation axis, while the second independent 4,40 -bipyridine molecule is located on a centre of inversion. One of the two rings of one 4,40 -bipyridine ligand is disordered over two orientations and was refined using a split model [occupancy ratio 0.68 (2):0.32 (2)]. The CoII atoms are connected by the. 4,40 -bipyridine ligands into layers, which are located parallel to the ab plane

Bruker APEXII CCD diffractometer

Mo K radiation

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