COMPLEX HALIDES OF TRANSITION METALS .8. A COMPARATIVE STUDY OF ELECTRONIC ABSORPTION SPECTRA OF ZRX62- HFX62- NBX6- AND TAX6- ANIONS

被引：13

作者：

BRISDON, BJ

FOWLES, GWA

TIDMARSH, DJ

WALTON, RA

机构：

[1] Department of Chemistry, Bath University of Technology, Claverton Down

[2] Department of Chemistry, university of Reading, Whiteknights Park Reading

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR SPECTROSCOPY | 1969年 / A 25卷 / 05期

关键词：

D O I：

10.1016/0584-8539(69)80075-9

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The diffuse-reflectance and solution spectra (in acetonitrile) of salts of the HfX62- (X = Cl or Br), NbX6- and TaX6- (X = Cl, Br or I) anions are reported. Absorption bands associated with the halogen (π) → metal (γ5g) transitions are assigned and, in particular, the spectra of the pairs ZrX62- and HfX62-, and NbX-6 and TaX-6 are compared. The optical electronegativity parameter xopt has been calculated for Hf(IV), Nb(V) and Ta(V)-1·54, 1·94 and 1·84, respectively. Spectral data for the NbCl6- anion is used as further support for earlier spectral assignments for the MoCl-6 anion. The diffuse-reflectance spectra of the methyl cyanide adducts HfX4·2CH3CN (X = Cl or Br) are also described. © 1969.

引用

页码：999 / &

共 18 条

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