Crystal structure of trans-diaquabis(4-cyanobenzoato-kappa O)bis(nicotinamide-kappa N-1)cobalt(II)


ASKIN G. S. , Necefoglu H., Nayir G. Y. , Celik R. C. , HÖKELEK T.

ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, cilt.71, ss.561-568, 2015 (ESCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 71
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1107/s2056989015008270
  • Dergi Adı: ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
  • Sayfa Sayıları: ss.561-568

Özet

In the title complex, [Co(C8H4NO2)(2)(C6H6N2O)(2)(H2O)(2)], the Co-II atom is located on an inversion centre and is coordinated by two 4-cyanobenzoate (CNB) anions, two nicotinamide (NA) ligands and two water molecules. The four O atoms in the equatorial plane form a slightly distorted square-planar arrangement, while the slightly distorted octahedral coordination sphere is completed by the two N atoms of the NA ligands in the axial positions. The dihedral angle between the carboxylate group and the adjacent benzene ring is 22.11 (15)degrees, while the pyridine and benzene rings are oriented at a dihedral angle of 89.98 (5)degrees. In the crystal, intermolecular N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds link the molecules, enclosing R-2(2)(8) and R-4(4)(8) ring motifs, forming layers parallel to (100). The layers are linked via C-H center dot center dot center dot O and C-H center dot center dot center dot N hydrogen bonds, resulting in a three-dimensional network. A weak C-H center dot center dot center dot pi interaction is also observed.