摘要
合成了配体Ｎ，Ｎ’－双（８－喹啉基）丙二酰胺（ｑｍａＨ＿２），Ｎ，Ｎ’－双（２－羟基苯基）丙二酰胺（ｈｐｍａＨ＿４）及其金属配合物［Ｍ＝Ｃｕ（Ⅱ）、Ｎｉ（Ⅱ）、Ｃｏ（Ⅲ）、Ｐｄ（Ⅱ）、Ｚｎ（Ⅱ）］。并采用元素分析，’ＨＮＭＲ、ＵＶ－ｖｉｓ、ＩＲ、ＭＳ、摩尔电导、熔点测定进行了化合物的结构表征对配体ｑｍａＨ＿２的金属配合物作了荧光测定。结果表明：配体ｈｐｍａＨ＿４与Ｃｕ（Ⅱ）和Ｃｏ（Ⅱ）配位时，酰胺分别非去质子化和去质子化；配体ｑｍａＨ＿２与金属离子生成类芳香性配合物。由于金属ｄ电子参与芳环π电子的共轭，表现出芳环紫外吸收峰蓝移和荧光性质，尤以Ｚｎ（Ⅱ）配合物最佳；配体ｑｍａＨ＿２与Ｃｏ（Ⅱ）配位时表现出吸氧特性，生成μ－过氧键配合物。
Bis-amide tetradentate ligands,N,N' -bis(8 -quinolyl)malondiamide(qmaH_2)and N,N' -bis(2-hydroxylphenyl) malondiamide (hpmaH_4) and their complexes, Mqma.nH_2O (M=Cu (Ⅱ),n=0.5,M=Ni(Ⅱ),n=2.5), [Co(Ⅲ)qma]_2·O_2·6H_2O, Pd(Ⅱ)qma·qmaH_23H_2O, Cu(Ⅱ)hpmaH_20.5H_2O and Co(Ⅲ)_2hpma(OH)_2· EtOH·H_2O were prepared and isolated. All the compounds werestudied by elemental analysis, IR, UV-vis,'HNMR and MS. The ligand qmaH_2 acts as aplanar N_4 tetradentate ligand in the monomeric deprotonated complexes. The cobaltous com-plex of qmaH_2 combines 0.5 molecule oxygen and forms rapidly a cobalt complex with a struc-ture of μ-peroxo-bond in tbe presence of oxygen. A fluorescent preperty was found in themetal complexes of qmaH_2. The copper and cobaltic complexes of hpmaH_4 exhibitclear evidence of nondeprotonated and deprotionated amide-N coordination respectively.
出处
《暨南大学学报（自然科学与医学版）》
CAS
CSCD
1994年第1期86-93,共8页
Journal of Jinan University(Natural Science & Medicine Edition)
基金
国务院侨办资助课题
南京大学配位化学国家重点实验室资助
关键词
酰胺
荧光
丙二酰胺
络合物
Complex
amide
Fluoroscent
N,N'-bis(8-quinolyl)malondiamide
N,N'-bis(2-hydroxylphenyl)malondiamide
