Bis(Μ-4-MethylBenzoato-Κ2 O:O′)Bis[Aqua(4-MethylBenzoato-Κ2 O,O′)Zinc(II)]–Bis(Μ-4-MethylBenzoato-Κ2 O:O′)Bis[(4-MethylBenzoato-Κo)(Nicotinamide-Κn)Zinc(II)]–Water (1/1/2)
Tarih
2010Yazar
Hökelek,Tuncer
Ermis, E.
Tercan, B.
Çimen ,E.
Necefoglu ,H.
Üst veri
Tüm öğe kaydını gösterÖzet
The crystal structure of the title compound, [Zn2(C8H7O2)4(H2O)2]·[Zn2(C8H7O2)4(C6H6N2O)2]·2H2O, consists of two kinds of dinuclear ZnII complexes (complex A and complex B) and uncoordinated water molecules. In complex A, [Zn2(C8H7O2)4(H2O)2], each Zn cation is chelated by a 4-methylbenzoate (PMB) anion and coordinated by a water molecule, and is further bridged by two PMB anions in a trigonal-bipyramidal geometry. In complex B, [Zn2(C8H7O2)4(C6H6N2O)2], each ZnII cation is coordinated by a monodentate PMB anion and one nicotinamide (NA) ligand, and is further bridged by two PMB anions in a tetrahedral geometry. Weak intra-molecular π–π stacking between adjacent benzene rings is observed in complex B, the centroid–centroid distance being 3.710 (2) Å. Extensive O—H⋯O and N—H⋯O hydrogen bonding and weak C—H⋯O hydrogen bonding is present in the crystal structure. The crystal studied was a racemic twin; the minor twin component refined to 38%.
Bağlantı
https://doi.org/10.1107/S1600536810022476https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3006769/
http://hdl.handle.net/11655/18131