Synthesis, Characterization of Di-t-butyltin Piperazine Carbodithioato Complexes tBu2Sn(Cl)S2CN(CH2CH2)2NR and Crystal Structures of tBu2Sn(Cl)S2CN(CH2CH2)2NEt and tBu2Sn(Cl)S2CN(CH2CH2)2NBz

Ten di-t-butyltin piperazine carbodithioato complexes tBu2Sn(Cl)S2CN(CH2CH2)2NR (R = Et 1, Bz2,H3,Me4, Ph 5, 4-ClPh 6, 2-ClPh 7, 3-ClPh 8, nPr 9, tBu 10) have been synthesized and characterized by elemental analysis, UV, IR and NMR spectroscopies. The structures of tBu2Sn(Cl)S2CN(CH2CH2)2NEt (1) and tBu2Sn(Cl)S2CN(CH2CH2)2NBz(2) have been determined by X-ray diffraction. The crystals of complexes 1 and 2 belong to monoclinic and triclinic system with space group P2(1)/c and P1, respectively, with cell dimensions: 1, a = 13.066(2) A, b = 12.560(2) A, c = 13.066(2) A,beta = 97.043(10)graduate, Z = 4, V = 2128.0(6) _3, F(000) = 936, R1 = 0.0375, wR2 = 0.1011 and 2, a = 8.2658(16)A, b = 10.927(2) A, c = 14.182(3) A, alfa = 97.29(3)graduate,beta = 91.05(2)graduate, gamma = 98.54(3)graduate, Z= 2, V = 1255.6(4) A3, F(000) = 532, R1 = 0.0543, wR2 = 0.1617. In the crystals of the two complexes, the tin atoms are all rendered five-coordination in a trigonal bipyramidal configuration by coordinating with both S atoms of dithiocarbamate groups.