title: Triaqua-bis(1H-imidazole)bis-[μ(2)-2-(oxalo-amino)benzoato(3-)]dicopper(II)calcium(II) hepta-hydrate.
abstract: In the title heterotrinuclear coordination compound, [CaCu(2)(C(9)H(4)NO(5))(2)(C(3)H(4)N(2))(2)(H(2)O)(3)]·7H(2)O, the Ca(2+) cation is in a penta-gonal-bipyramidal geometry and bridges two (1H-imidazole)[2-(oxaloamino)benzoato(3-)]copper(II) units in its equatorial plane. Each Cu(II) atom has a normal square-planar geometry. The mol-ecule has approximate local (non-crystallographic) mirror symmetry and 23 classical hydrogen bonds are found in the crystal structure.
authors.affiliation: Institute of Environmental and Municipal Engineering, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, People's Republic of China.
authors.forename: Chongzhen
authors.initials: C
authors.lastname: Mei
authors.forename: Kaihui
authors.initials: K
authors.lastname: Li
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang