Abstract
Two new non-centrosymmetric copper sulfates are synthesized under slow evaporation conditions through the use of enantiomorphically pure sources of either (R)-2-methylpiperazine or (S)-2-methylpiperazine. Both crystallize in the non-centrosymmetric P2(1) space group, crystal data for [(R)-C5H14N2][Cu(H2O)(6)](SO4)(2) (I), a = 6.5276(2) , b = 11.1955(3) , c = 12.4559(4) , beta = 101.196(2)A degrees, Z = 2, V = 892.95(5) (3) and [(S)-C5H14N2][Cu(H2O)(6)](SO4)(2) (II), a = 6.5188(2) , b = 11.1786(2) , c = 12.4365(3) , beta = 101.205(1)A degrees, Z = 2, V = 888.99(4) (3). The three-dimensional structure networks for these compounds consist of isolated [Cu(H2O)(6)](2+) and [(R)-C5H14N2](2+) or [(S)-C5H14N2](2+) cations and SO (4) (2-) anions linked only by hydrogen bonds. The Cu atom is in a slightly distorted octahedral coordination environment. The crystal packings are influenced by cation-to-anion N-HaEuro broken vertical bar O and OW-HaEuro broken vertical bar O hydrogen bonds leading to an open framework structures.