Solvothermal synthesis and crystal structure of the novel closo 12-vertex nickeladodecaborane cluster H_2[Cl_2NiB_(11)H_6-2,3,4,5,6-(OiPr)_5]

摘要

The reaction of [NiCl_2(PPh_3)_2] with B_(11)H_(14)~- in iPrOH under solvothermal conditions gives a nickeladodecaborane cluster: H_2[Cl_2NiB_(11)H_6-2,3,4,5,6-(OiPr)_5] which was characterized by FT-IR, NMR spectroscopy and elemental analysis. It was also characterized by an X-ray diffraction study of a single crystal. The title cluster belongs to monqclinic, space group P2(1), with crystal cell parameters: a= 12.355(13)A, b= 18.471(19)A, c=12.956(14)A, beta = 93.524(18) deg, Z = 4, D_(Calcd) = 1.242 Mg m~(-3), F(000)= 1160, R_1 =0.0746, wR_2 = 0.1829. The cluster has a closo 12-vertex {NiB_(11)} icosahedral skeleton, in which Ni connects with two Cl atoms and five B atoms. OiPr groups substituted all five H atoms on the boron cage atoms adjacent to Ni.