Tetra-kis(?(2)-2-methyl-3,5-dinitro-benzoato-?O:O)bis-[aqua-copper(II)] tetra-hydrate.

ABSTRACT: The title compound, [Cu(2)(C(8)H(5)N(2)O(6))(4)(H(2)O)(2)]·4H(2)O, forms a centrosymmetric paddle-wheel-type dimer with an intra-molecular Cu?Cu distance of 2.6540?(4)?Å. The Cu(II) atom is in a square-pyramidal coordination environment formed by four O atoms of four carboxyl-ate groups and one water mol-ecule, which is located in the apical position. The carboxyl-ate groups are twisted relative to the benzene rings by 11.09?(16) and 45.55?(19)°. The nitro groups are not coplanar with the parent aromatic rings [dihedral angles = 16.2?(3)-51.45?(14)°]. O-H?O hydrogen bonds between the coordinated water mol-ecules and one of the nitro groups, as well as ?-? stacking inter-actions [centroid-centroid distance = 3.5764?(12)?Å] between the benzene rings, assemble the complex mol-ecules into a one-dimensional polymeric structure which is further extended into a three-dimensional polymeric network via O-H?O hydrogen bonds involving the water molecules of crystallization.

SUBMITTER: Danish M 

PROVIDER: S-EPMC3051452 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature