Synthesis and characterization of pseudotetrahedral N2O and N2S zinc(II) complexes of two heteroscorpionate ligands:: Models for the binding sites of several zinc metalloproteins

被引:89
作者
Hammes, BS [1 ]
Carrano, CJ [1 ]
机构
[1] SW Texas State Univ, Dept Chem, San Marcos, TX 78666 USA
关键词
D O I
10.1021/ic990233v
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Nine new pseudotetrahedral Zn(II) complexes of the heteroscorpionate ligands (3-tert-butyl-2-hydroxy(or thio)-5-methylphenyl)bis(3,5-dimethylpyrazolyl)methane, L1OH or L2SH, have been prepared and characterized (in most cases crystallographically). Complexes isolated include [(L1O)ZnCl]. [(L1O)ZnI], [(L1OH)ZnI2]. [(L1O)-ZnCH3,] [(L1O)ZnOAc], [(L1O)ZnSPh], [(L1O)ZnSBz], [(L2S)ZnCH3], [(L2S)ZnSPh], and [(L2S)(2)Zn]. In conjunction with the widely studied tris(pyrazolyl)borates this new series of heteroscorpionates provides a set of isolobal and isoelectronic ligands differing in donor set, i.e. N-3, N2O, and N2S. Preliminary reactivity studies with HX species, Mel, or trimethyl phosphate suggest differences between the three sets of ligands.
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页码:4593 / 4600
页数:8
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