The chain structure of [Ni(C 4 H 2 O 4 )(C 12 H 8 N 2 )(H 2 O)] n with different types of fumarate bridging

• Published in: Acta crystallographica. Section E, Structure reports online Structure reports online, 2012-02, Vol.68 (2), p.m92-m93
• Main Authors: Uhrinová, Anna, Kuchár, Juraj, Černák, Juraj
• Format: Article
• Language: English
• Subjects: Metal-Organic Papers
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536811054614

Using modified solvothermal conditions (longer cooling time), beside previously characterized dark-green crystals of [Ni(C 4 H 2 O 4 )(C 12 H 8 N 2 )] (main product), a few light-green crystals of the polymeric title compound, catena -poly[[aqua­(1,10-phenanthroline-κ 2 N , N ′)nickel(II)]-μ-fumarato-κ 2 O : O ′-[aqua­(1,10-phenanthroline-κ 2 N , N ′)nickel(II)]-μ-fumarato-κ 4 O , O ′: O ′′, O ′′′], [Ni(C 4 H 2 O 4 )(C 12 H 8 N 2 )(H 2 O)] n were isolated. Its crystal structure is made up from zigzag chains, propagating in [001], in which the Ni 2+ ions are linked alternatively by μ 2 -fumarato and bis-chelating fumarato bridging ligands. The Ni 2+ ion is coordinated in a deformed octa­hedral geometry by one chelating 1,10-phenanthroline ligand, one aqua ligand in a cis position with regard to both N -donor atoms and by two different fumarato ligands, each residing with its central C=C bond on an inversion centre, occupying the remaining coordination sites in a fac fashion. The chains thus formed are linked by O—H⋯O hydrogen bonds and π–π inter­actions between the aromatic rings of the phenanthroline ligands with a shortest ring centroid separation of 3.4787 (10) Å.