Crystal Structure and Molecular Stereochemistry of Novel Polymeric Cu_2(DMP)_4(DMSO)as a Platform for Phosphate Diester Binding

摘要

Treatment of a solution of CuCl_2 in dimethyl phosphate(DMP)with DMSO under nitrogen atmosphere afforded to a light blue fluorescence powder.Slow evaporation of H_2O-DMSO solution of this powder resulted in blue-sky crystals of a new polymeric Cu(II)complex,with a unit cell composed of Cu_2(DMP)_4(DMSO),(1).The crystal and molecular structure of the complex acquired crystallographically.Compound(1)crystallizes in the monoclinic space group P2_1 with a = 12.8920(11)A,b = 13.1966(11)A,c = 14.7926(13)A,alpha= 90deg,beta= 98.943(2)deg,gamma= 90deg,V= 2486.1(4)A~3,and Z = 4.A square pyramidal environment for the metal center was established by coordination of oxygen atoms of four bridging DMP ligands in the basal positions and binding a tri-centered oxygen atom of DMSO in the apical disposition of Cu(II).The sixth position was also affected by a weak interaction with the sulfur atom of another DMSO.The phosphorous atom in the bridging DMP was arranged in a deformed tetrahedron with(gg)conformation for methyl esters with C2v symmetry.