metal ion. The Schiff bases H2L have been reduced by NaBH4 to the related polyamine derivatives H2R, which form, when reacted with the appropriate metal ions, M(H2R)(X)2 (M= Co2+, Ni2+; X=CH3COO−, Cl−), Cu(R) · nH2O and Mn(R)(CH3COO) · nH2O. The prepared ligands and related complexes have been characterized by IR, NMR and mass spectrometry. The [1+1] cyclic nature of the macrocyclic polyamine systems
[1 + 1]个大环和[1 + 2]个大环隔室
配体(H 2 L),包含一个N 2 O 2,N 3 O 2,N 2 O 3,N 4 O 2或O 2 N 2 O 2 Schiff通过适当缩合的甲酰基和胺前体的自缩合制备了一个碱基位点和一个O 2 O n(n = 3,4)
冠醚样位点。在
钠离子存在下的模板程序提供Na 2(L)或Na(HL)· n H 2O.与适当的过渡
金属
乙酸盐水合物反应时,H 2 L形成M(L)· n H 2 O,M(HL)(CH 3 COO)· n H 2 O,M(H 2 L)(X)2 · ñ ħ 2 O(M =
铜2+,
钴2+,
镍2+ ; X = CH 3 COO - ,
氯- )或Mn(L)(CH 3 COO)· ñ ħ 2O根据所用实验条件而定。在所需的
金属离子存在下,通过缩合适当的前体制备了相同的配合物。Schiff碱H 2 L已被NaBH 4还原为相关的
多胺衍
生物H