Tetraphenyl-and Tetratolylantimony Complexes with N,N-Dialkyldithiocarbamate Ligands:Synthesis,X-Ray Diffraction Analysis,and 13C and 15N CP/MAS NMR Studies

摘要

Crystalline tetraphenylantimony and tetratolylantimony complexes with N,N-dialkyldithiocarba-mate ligands [Sb(C6H5)4(S2CNR2)](R=CH3,C2H5,and C3H7 and R2=(CH2)6)were synthesized by ligand exchange reactions and studied by 13C and 15N CP/MAS NMR spectroscopy.X-ray diffraction analysis revealed that the complex [Sb(n-CH3-C6H4)4{S2CN(C3H7)2}] exists as the single molecular form,while[Sb(C6H5)4{S2CN(CH2)6}] exists as two molecular conformers.The 13C and 15N signals were assigned to the positions of the atoms in the isomeric structures [Sb(C6H5)4{S2CN(CH2)6}] in terms of different degrees of double bonding in the formally single=N-C(S)S-bond.