Diaqua-bis-(4-bromo-benzoato-?O)bis-(N,N-diethyl-nicotinamide-?N)copper(II).

ABSTRACT: The title Cu(II) complex, [Cu(C(7)H(4)BrO(2))(2)(C(10)H(14)N(2)O)(2)(H(2)O)(2)], contains two 4-bromo-benzoate (PBB), two diethyl-nicotinamide (DENA) monodentate ligands and two water mol-ecules. The four O atoms in the equatorial plane around the Cu(II) ion form a slightly distorted square-planar arrangement, while the slightly distorted octa-hedral coordination is completed by two N atoms of the DENA ligands in the axial positions. Intra-molecular O-H?O hydrogen bonds link the water mol-ecules to the carboxyl-ate groups. The dihedral angles between the carboxyl-ate groups and the adjacent benzene rings are 3.1?(3) and 3.74?(17)°, while the pyridine rings and the benzene rings are oriented at dihedral angles of 6.81?(10) and 3.38?(12)°. In the crystal, inter-molecular O-H?O hydrogen bonds link the mol-ecules into double chains along the b axis. C-H?O inter-actions are also observed. ?-? contacts between pyridine rings [centroid-centroid distance = 3.485?(2)?Å] may further stabilize the crystal structure.

SUBMITTER: Necefoglu H 

PROVIDER: S-EPMC3200662 | biostudies-literature | 2011 Sep

REPOSITORIES: biostudies-literature