Diaqua-bis(N,N-diethyl-nicotinamide-?N)bis-[4-(dimethyl-amino)benzoato-?O]nickel(II).

ABSTRACT: The centrosymmetric title Ni(II) complex, [Ni(C(9)H(10)NO(2))(2)(C(10)H(14)N(2)O)(2)(H(2)O)(2)], contains two dimethyl-amino-benzoate (DMAB), two diethyl-nicotinamide (DENA) ligands and two water mol-ecules, all of them monodentate. The four O atoms in the equatorial plane around the Ni(II) atom form a slightly distorted square-planar arrangement, while the slightly distorted octa-hedral coordination is completed by the two pyridine N atoms of the DENA ligands in axial positions. The Ni(II) atom is displaced by 0.681?(1)?Å out of the least-squares plane of the carboxyl-ate group. The dihedral angle between the carboxyl-ate group and the adjacent benzene ring is 5.61?(7)°, while the pyridine and benzene rings are oriented at a dihedral angle of 73.20?(4)°. An intra-molecular O-H?O hydrogen bond results in the formation of a six-membered ring with a twisted conformation. In the crystal structure, inter-molecular O-H?O and C-H?O hydrogen bonds link mol-ecules into a three-dimensional network. Two weak C-H?? inter-actions are also present.

SUBMITTER: Hokelek T 

PROVIDER: S-EPMC2977174 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature