In:
Acta Crystallographica Section C Structural Chemistry, International Union of Crystallography (IUCr), Vol. 75, No. 7 ( 2019-07-01), p. 990-995
Abstract:
A new coordination polymer (CP), namely poly[(μ-4,4′-bipyridine)(μ 3 -3,4′-oxydibenzoato)cobalt(II)], [Co(C 14 H 8 O 5 )(C 10 H 8 N 2 )] n or [Co(3,4′-obb)(4,4′-bipy)] n ( 1 ), was prepared by the self-assembly of Co(NO 3 ) 2 ·6H 2 O with the rarely used 3,4′-oxydibenzoic acid (3,4′-obbH 2 ) ligand and 4,4′-bipyridine (4,4′-bipy) under solvothermal conditions, and has been structurally characterized by elemental analysis, IR spectroscopy, single-crystal X-ray crystallography and powder X-ray diffraction (PXRD). Single-crystal X-ray diffraction reveals that each Co II ion is six-coordinated by four O atoms from three 3,4′-obb 2− ligands, of which two function as monodentate ligands and the other as a bidentate ligand, and by two N atoms from bridging 4,4′-bipy ligands, thereby forming a distorted octahedral CoN 2 O 4 coordination geometry. Adjacent crystallographically equivalent Co II ions are bridged by the O atoms of 3,4′-obb 2− ligands, affording an eight-membered Co 2 O 4 C 2 ring which is further extended into a two-dimensional [Co(3,4′-obb)] n sheet along the ab plane via 3,4′-obb 2− functioning as a bidentate bridging ligand. The planes are interlinked into a three-dimensional [Co(3,4′-obb)(4,4′-bipy)] n network by 4,4′-bipy ligands acting as pillars along the c axis. Magnetic investigations on CP 1 disclose an antiferromagnetic coupling within the dimeric Co 2 unit and a metamagnetic behaviour at low temperature resulting from intermolecular π–π interactions between the parallel 4,4′-bipy ligands.
Type of Medium:
Online Resource
ISSN:
2053-2296
DOI:
10.1107/S2053229619008337
DOI:
10.1107/S2053229619008337/lf3097sup1.cif
DOI:
10.1107/S2053229619008337/lf3097Isup2.hkl
Language:
Unknown
Publisher:
International Union of Crystallography (IUCr)
Publication Date:
2019
detail.hit.zdb_id:
2025703-X
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