x-ray Crystal Structure of a Dinuclear Zinc(Ⅱ) Complex with Unusual Two Monodentate O-coordination of Carboxylate Group of Isonicotinate  

作　　者：Feng Mei NIE Ru Ji WANG Yan Mei LI Yu Fen ZHAO (Bio-organic Phosphorus Chemistry Laboratory, Department of Chemistry,Tsinghua University, Beijing, 100084)Munirathinam NETHAJI Akhil R. CHAKRAVARTY (Department of Inorganic and Physical Chemistry, Ind 

出　　处：《Chinese Chemical Letters》1998年第9期881-884,共4页中国化学快报（英文版）

摘　　要：Reaction of Zn(ClO4)2·6H2O with septadentate 2,6-bis[bis(2-benzimidazolylme-thyl)amino methyl]-4-methylphenol (Hbbap) and sodium isonicotinate yielded a dinuclear zinc complex[Zn2(bbap) (Iso) (Hiso)] (ClO4)2·[Zn2 (bbap) (Iso) (H2O)] (ClO4)2·4H2O(1a·1b·4H2O). Hiso isisonicotinic acid and Iso is isonicotinate anion. The structure has been established by X-raycrystallography and shows that the two zinc ions are bridged by the phenoxy unit of bbap- ligand,and the presence of unusual monodentate O-coordination of carboxylate group from isonicotinicacid. The coordination geometry around the zinc ion is approximately trigonal bipyramidal.Reaction of Zn(ClO4)2·6H2O with septadentate 2,6-bis[bis(2-benzimidazolylme-thyl)amino methyl]-4-methylphenol (Hbbap) and sodium isonicotinate yielded a dinuclear zinc complex[Zn2(bbap) (Iso) (Hiso)] (ClO4)2·[Zn2 (bbap) (Iso) (H2O)] (ClO4)2·4H2O(1a·1b·4H2O). Hiso isisonicotinic acid and Iso is isonicotinate anion. The structure has been established by X-raycrystallography and shows that the two zinc ions are bridged by the phenoxy unit of bbap- ligand,and the presence of unusual monodentate O-coordination of carboxylate group from isonicotinicacid. The coordination geometry around the zinc ion is approximately trigonal bipyramidal.

关 键 词：zinc complex ISONICOTINATE METALLOENZYME crystal structure 

分 类 号：O72[理学—晶体学]