Coordination Modes and Properties of Ag(I)Complex with N,N,N',N',N'-Pentamethyldiethylenetriamine

摘要

The reaction of AgC104 with acyclic potential tridentate N,N,N',N',N"-pentamethyldiethylenetriamine(pmdeta)has given colorless crystals suitable for X-ray crystallography.The crystal structure(P2_1,a = 14.413(1)A,b = 25.270(2)A,c = 16.130(1)A,b = 103.012(1)deg ,V= 5723.7(8)A~3,Z= 4,R = 0.0349)has been solved and refined.Three silver(I)ions connect four pmdeta ligands to produce discrete complex of [Ag_3(pmdeta)_4](ClO_4)_3.A pmdeta ligand is bridged to three silver(I)ions,and three other pmdeta ligands are chelated to each silver(I)center in a tridentate mode.Thus,the product is a rare tri-nuclear silver(I)complex with two different chemical environments.~(13)C NMR and MAS ~(13)C NMR indicate that the tri-nuclear silver(I)complex is not rigid in solution.The contact angles and thermal analyses of the complex are measured and discussed.