ETHYL)PIPERAZINIUM]TETRACHLOROMONOBROMOCUPRATE(II) MONOHYDRATE - A COMPOUND CONTAINING A DISCRETE SQUARE-PYRAMIDAL UNIT

The crystal and molecular structure of the ethyl)piperazinium]tetrachl oromonobromocuprate(II) monohydrate is reported. The crystals are mono clinic, space group P2(1)/c, Z = 4, with a = 9.560(2), b = 9.240(3), c = 18.270(7) angstrom, beta = 99.20(2)degrees. The structure consists of discrete N(2-ammoniumethyl)piperazinium cations, uncoordinated wate r molecules and [CuCl4Br]3- anions, in which four coplanar chlorine at oms occupy the square-basal plane and one bromine atom the axial posit ion, giving the copper(II) ion a moderately elongated square-pyramidal geometry. The structure was refined to a final R index of 0.0765.