Synthesis and crystal structures of two monomeric zinc(II) complexes containing carboxylate and aqua ligands

被引：8

作者：

Chen, XM ^{[1
]}

Huang, XC ^{[1
]}

Tong, ML ^{[1
]}

Tong, YX ^{[1
]}

Ng, SW ^{[1
]}

机构：

[1] UNIV MALAYA,INST ADV STUDIES,KUALA LUMPUR 50603,MALAYSIA

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 1997年 / 50卷 / 08期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1071/C97019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two monomeric zinc(II) complexes of betaine (Me3N+CH2CO2- = bet), [Zn(bet)(2)(H2O)Cl] (ClO4) (1) and [Zn(bet)(3)(H2O)] (ClO4)2 (2), have been prepared and characterized by single-crystal structural analysis. The zinc atom in both complexes is coordinated in a distorted tetrahedral geometry: the zinc atom in complex (1) is surrounded by one aqua ligand (Zn-O 1.979(3) Angstrom), one chloro ligand (Zn-Cl 2.218(1) Angstrom) and two monodentate carboxylate groups (Zn-O 1.946(2) Angstrom); the zinc atom in complex (2) is ligated by one aqua ligand (Zn-O 1.997(6) Angstrom) and three monodentate carboxylate groups (Zn-O 1.943(5)-2.106(8) Angstrom). In both complexes, the aqua ligand forms strong donor hydrogen bonds with adjacent carboxylate oxygens (for complex (1), O ... O is 2.689(2) Angstrom; for complex (2), O ... O are 2.67(1) and 2.709(8) Angstrom); these interactions are discussed in the context of zinc complexes and enzyme active sites.

引用

页码：865 / 868

页数：4

共 30 条

[1]

[Anonymous], 1992, INT TABLES XRAY CRYS, VC

[2] MONONUCLEAR AND DINUCLEAR ZINC(II) COMPLEXES OF BIOLOGICAL RELEVANCE - CRYSTAL-STRUCTURES OF [L2ZN](PF6)2, [L'ZN(O2CPH)2(H2O)], [L'2ZN2(MU-OH)2](CLO4)2, AND [L'2ZN2(MU-OH)(MU-CH3CO2)2](CLO4)BULLET-H2O (L = 1,4,7-TRIAZACYCLONONANE, L' = 1,4,7-TRIMETHYL-1,4,7-TRIAZACYCLONONANE) [J].

CHAUDHURI, P ;

STOCKHEIM, C ;

WIEGHARDT, K ;

DECK, W ;

GREGORZIK, R ;

VAHRENKAMP, H ;

NUBER, B ;

WEISS, J .

INORGANIC CHEMISTRY, 1992, 31 (08) :1451-1457

[3] Synthesis, structure and magnetic properties of a singly carboxylate-bridged dinuclear manganese(II) complex [J].

Chen, XM ;

Tong, YX ;

Xu, ZT ;

Mak, TCW .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1995, (24) :4001-4004

[4] A DINUCLEAR ZINC CARBOXYLATE COMPLEX OF BIOLOGICAL RELEVANCE - CRYSTAL-STRUCTURE OF [ZN-2(BPY)(2)(MECO(2))(3)]CLO4 (BPY=2,2'-BIPYRIDINE) [J].

CHEN, XM ;

TONG, YX ;

MAK, TCW .

INORGANIC CHEMISTRY, 1994, 33 (20) :4586-4588

[5]

CHEN XM, 1991, INORG CHIM ACTA, V182, P139

[6] METAL BETAINE INTERACTIONS .6. CRYSTAL AND MOLECULAR-STRUCTURE OF TETRAKIS(BETAINE)COPPER(II) NITRATE, [CU(ME3NCH2COO)4](NO3)2 [J].

CHEN, XM ;

MAK, TCW .

POLYHEDRON, 1991, 10 (02) :273-276

[7] Model complexes for the carboxylate-histidine-metal triad systems in metalloenzymes. Synthesis, crystal structures and spectroscopic properties of [M(Him)(2)(O(2)CMe)(2)] (M=Zn-II or Co-II, Him equals imidazole) [J].

Chen, XM ;

Ye, BH ;

Huang, XC ;

Xu, ZT .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1996, (16) :3465-3468

[8] A MODEL COMPLEX FOR THE CARBOXYLATE HISTIDINE ZINC SYSTEM IN ZINC ENZYMES - CRYSTAL-STRUCTURE OF [ZN(HIM)2(MECO2)2] (HIM = IMIDAZOLE) [J].

CHEN, XM ;

XU, ZT ;

HUANG, XC .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1994, (15) :2331-2332

[9]

CHEN XM, 1993, JIEGOU HUAXUE, V12, P56

[10]

CHEN XM, 1994, POLYHEDRON, V13, P2073

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