SYNTHETIC PATHWAYS FOR (MU-HO)ZN2 COMPLEXES

被引:28
作者
ALSFASSER, R [1 ]
VAHRENKAMP, H [1 ]
机构
[1] UNIV FREIBURG,INST ANORGAN & ANALYT CHEM,ALBERTSTR 21,W-7800 FREIBURG,GERMANY
来源
CHEMISCHE BERICHTE-RECUEIL | 1993年 / 126卷 / 03期
关键词
ZINC COMPLEXES; DINUCLEAR; HYDROXIDE BRIDGES; PYRAZOLE LIGANDS; IMIDAZOLE LIGANDS;
D O I
10.1002/cber.19931260321
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The reactions of the 3-substituted kalium hydrotris(pyrazolyl)borates 1 c, d (R = tert-butyl, anisyl) with Zn(ClO4)2 . 6 H2O produce the dinuclear mu-hydroxo complexes [L3Zn-O(H)-ZnL3](ClO4)3 (2a, b; L = 5-tert-butylpyrazole, 5-anisylpyrazole), due to hydrolytic cleavage of the B N bonds. These and similar complexes (2c, d; L = 5-tert-butyl-3-methylpyrazole, 5-phenylpyrazole) are also accessible directly from Zn(ClO4)2. 6 H2O, the substituted pyrazole, and KOH, and in one case (2 b; L = 5-anisylpyrazole) by hydrolytic cleavage of [HB(3-anisylpyrdzoly)3ZnEt] with perchloric acid. With other pyrazole and imidazole ligands, the Zn(ClO4)2/L/KOH reaction produces the simple complexes [ZnL6](ClO4)2 (3a, b; L = pyrazole, 3-methyl-5-phenylpyrazole) and [ZnL4](ClO4)2 (4; L = 2-methylimidazole). The crystal structures of 2a and 4, each containing tetrahedrally coordinated zinc atoms, have been determined.
引用
收藏
页码:695 / 701
页数:7
相关论文
共 30 条
  • [1] ALSFASSER AK, 1993, CHEM BER, V126, P685
  • [2] AN L(3)ZNOH COMPLEX AS A FUNCTIONAL-MODEL OF THE ENZYME CARBONIC-ANHYDRASE
    ALSFASSER, R
    RUF, M
    TROFIMENKO, S
    VAHRENKAMP, H
    [J]. CHEMISCHE BERICHTE-RECUEIL, 1993, 126 (03): : 703 - 710
  • [3] A MONONUCLEAR ZINC HYDROXIDE COMPLEX STABILIZED BY A HIGHLY SUBSTITUTED TRIS(PYRAZOLY)HYDROBORATO LIGAND - ANALOGIES WITH THE ENZYME CARBONIC-ANHYDRASE
    ALSFASSER, R
    TROFIMENKO, S
    LOONEY, A
    PARKIN, G
    VAHRENKAMP, H
    [J]. INORGANIC CHEMISTRY, 1991, 30 (21) : 4098 - 4100
  • [4] FUNCTIONAL TETRAHEDRAL ZINC-COMPLEXES
    ALSFASSER, R
    POWELL, AK
    VAHRENKAMP, H
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1990, 29 (08): : 898 - 899
  • [5] ALSFASSER R, 1990, ANGEW CHEM, V102, P939
  • [6] TETRAIMIDAZOLEZINC(II) PERCHLORATE
    BEAR, CA
    DUGGAN, KA
    FREEMAN, HC
    [J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1975, 31 (NOV15): : 2713 - 2715
  • [7] BOTRE F, 1991, CARBONIC ANHYDRASE
  • [8] MOLECULAR-STRUCTURE OF LEUCINE AMINOPEPTIDASE AT 2.7-A RESOLUTION
    BURLEY, SK
    DAVID, PR
    TAYLOR, A
    LIPSCOMB, WN
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1990, 87 (17) : 6878 - 6882
  • [9] 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)
    CHAUDHURI, P
    STOCKHEIM, C
    WIEGHARDT, K
    DECK, W
    GREGORZIK, R
    VAHRENKAMP, H
    NUBER, B
    WEISS, J
    [J]. INORGANIC CHEMISTRY, 1992, 31 (08) : 1451 - 1457
  • [10] SYNTHESIS AND STRUCTURE OF DIMERIC METAL-COMPLEXES WITH N(3)/N(9)-CHELATING HYPOXANTHINE LIGANDS AND WITH BRIDGING WATER-MOLECULES - [M2(MU-HYXAN)2(SO4)2(MU-H2O)2(H2O)2] (M = CU, CD, ZN, HYXAN = HYPOXANTHINE)
    DUBLER, E
    HANGGI, G
    SCHMALLE, H
    [J]. INORGANIC CHEMISTRY, 1990, 29 (13) : 2518 - 2523