Serveur d'exploration sur le cobalt au Maghreb

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Poly[[diaqua-bis-(μ2-4,4'-bipyrid-yl)cobalt(II)] dinitrate tetra-hydrate].

Identifieur interne : 000031 ( PubMed/Checkpoint ); précédent : 000030; suivant : 000032

Poly[[diaqua-bis-(μ2-4,4'-bipyrid-yl)cobalt(II)] dinitrate tetra-hydrate].

Auteurs : Asma Lehleh [Algérie] ; Mehdi Boutebdja ; Adel Beghidja ; Chahrazed Beghidja ; Hocine Merazig

Source :

RBID : pubmed:23633984

Abstract

The title compound, {[Co(C10H8N2)2(H2O)2](NO3)2·4H2O} n , (C10H8N2 = 4,4'-bipyridine = 4,4'-bpy) is a layered coordination polymer built up from a cationic square grid extending in (101) enclosing uncoordinating nitrate ions and water mol-ecules. The Co(II) ion has site symmetry 2 and one of the 4,4'-bpy ligands is generated by twofold symmetry [two N atoms and two C atoms lie on the rotation axis and the dihedral angle between the pyridine rings is 45.66 (5)°]. The other 4,4'-bpy ligand is generated by a crystallographic inversion center. The Co(II) ion exhibits a slightly distorted octa-hedral coordination geometry defined by two O atoms of two coordinating water mol-ecules and four N atoms from four bridging 4,4'-bpy ligands. The structure is consolidated by O-H⋯O, C-H⋯O and C-H⋯N hydrogen bonds.

DOI: 10.1107/S1600536813005230
PubMed: 23633984


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pubmed:23633984

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<div type="abstract" xml:lang="en">The title compound, {[Co(C10H8N2)2(H2O)2](NO3)2·4H2O} n , (C10H8N2 = 4,4'-bipyridine = 4,4'-bpy) is a layered coordination polymer built up from a cationic square grid extending in (101) enclosing uncoordinating nitrate ions and water mol-ecules. The Co(II) ion has site symmetry 2 and one of the 4,4'-bpy ligands is generated by twofold symmetry [two N atoms and two C atoms lie on the rotation axis and the dihedral angle between the pyridine rings is 45.66 (5)°]. The other 4,4'-bpy ligand is generated by a crystallographic inversion center. The Co(II) ion exhibits a slightly distorted octa-hedral coordination geometry defined by two O atoms of two coordinating water mol-ecules and four N atoms from four bridging 4,4'-bpy ligands. The structure is consolidated by O-H⋯O, C-H⋯O and C-H⋯N hydrogen bonds.</div>
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