Tetra-kis[?-4-(methyl-amino)-benzoato-?O:O']bis-[(N,N-diethyl-nicotinamide-N)zinc(II)] dihydrate.

ABSTRACT: The title mol-ecule, [Zn(2)(C(8)H(8)NO(2))(4)(C(10)H(14)N(2)O)(2)]·2H(2)O, is a centrosymmetric binuclear complex, with two Zn(II) ions [Zn?Zn' = 2.9301?(4)?Å] bridged by four methyl-amino-benzoate (MAB) ligands. The four nearest O atoms around each Zn(II) ion form a distorted square-planar arrangement with the distorted square-pyramidal coordination completed by the pyridine N atom of the N,N-diethyl-nicotinamide (DENA) ligand. Each Zn(II) ion is displaced by 0.3519?(2)?Å from the plane of the four O atoms, with an average Zn-O distance of 2.030?Å. The dihedral angles between carboxyl-ate groups and adjacent benzene rings are 10.57?(10) and 16.63?(12)°, while the benzene rings are oriented at a dihedral angle of 81.84?(5)°. The pyridine ring is oriented at dihedral angles of 40.49?(6) and 51.25?(6)° with respect to the benzene rings. In the crystal structure, inter-molecular O-H?O and N-H?O hydrogen bonds link the mol-ecules into a three-dimensional network. The ?-? contact between the inversion-related pyridine rings [centroid-centroid distance = 3.633?(1)?Å] may further stabilize the crystal structure.

SUBMITTER: Hokelek T 

PROVIDER: S-EPMC2971338 | biostudies-other | 2009

REPOSITORIES: biostudies-other