Conformational influence of dithiocarbazinic acid bishydrazone ligands on the structure of Zinc(II) complexes: A comparative XANES study

被引：31

作者：

Hennig, C

Hallmeier, KH

Zahn, G

Tschwatschal, F

Hennig, H

机构：

[1] Univ Leipzig, Inst Inorgan Chem, D-04103 Leipzig, Germany

[2] Univ Leipzig, Inst Phys & Theoret Chem, D-04103 Leipzig, Germany

[3] Tech Univ Dresden, Inst Crystallog & Solid State Phys, D-01062 Dresden, Germany

来源：

INORGANIC CHEMISTRY | 1999年 / 38卷 / 01期

关键词：

D O I：

10.1021/ic9804059

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

(1,2-Ethanediyliden)-bis(S-methylhydrazonecarbodithionate) ligands la-g form zinc chelates with [ZnN2S2] units, as shown by means of IR, NMR, XPS, X-ray crystal structure analysis, and Zn and N K-edge XANES. The conformation of ligands la-g strongly determines the structure of the corresponding zinc complexes 2a-g. Powder samples of these complexes were studied by Zn K-edge XANES. The Zn K-edge XANES results agree with those of X-ray crystal structure data, when available. A tetrahedral ligand environment was confirmed fur only one complex (2a). The other zinc chelates (2b-g) show dimeric structures with square pyramidal complex geometry. With pyridine, five-coordinated zinc complexes 3a-c form, as shown by Zn K-edge XANES in comparison with X-ray crystal structure data. XANES studies afford considerable advantage for obtaining structural information, in particular when crystals of sufficient quality cannot readily be obtained.

引用

页码：38 / 43

页数：6

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