Crystal structure of [Cu-2(II) (dmpa)(2)(p-Cl-C6H5COO)(2)] (Hdmpa = N,N-dimethyl-3-amino-1-propanol)

The copper complex, [Cu-2(II)(dmpa)(2)(p-Cl-C6H5COO)(2)], has been prepared and its structure determined using X-ray crystallography. The dimer is a d i-mu(2)-alkoxo complex which is a five-coordinate copper dimer with unsuppo rted alkoxo bridges. The complex crystallizes in the triclinic space group P-1 with a = 11.384(2), b = 14.636(5), c = 9.609(2) Angstrom, alpha = 100.0 7(2), beta = 104.33(3), gamma = 72.79(2)degrees, V = 1471.8(7) Angstrom(3), and Z = 2. The structure is comprised of discrete binuclear clusters in wh ich the metal atoms are bridged by two alkoxo oxygens of the dmpa(-) ligand s, The Cu-O and Cu-N distances are in good agreement with those found for o ther copper(II) aminoalcoholato complexes. The Cu Cu distance is 2.9765(6) Angstrom. In the crystal, every two dimeric coordination molecules are comb ined together by the recognition through intermolecular hydrogen-bonding in teractions between the apical water molecule and the non-coordinated O atom from the p-chlorobenzoato ligand: forming a tetramer.