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Nuclear Quadrupole Resonance of Nitrogen-14 in Potassium Hexathiocyanatoplatinate(IV) and Tetrathiocyanatomercurate(II)

Authors
  • Asaji, Tetsuo
  • Ikeda, Ryuichi
  • Nakamura, Daiyu
Type
Published Article
Journal
Zeitschrift für Naturforschung B
Publisher
Verlag der Zeitschrift für Naturforschung
Publication Date
Nov 01, 1976
Volume
31
Issue
11
Pages
1483–1488
Identifiers
DOI: 10.1515/znb-1976-1111
Source
De Gruyter
Keywords
License
Green

Abstract

The nuclear quadrupole resonance of 14N was observed in K2Pt(SCN)6 and K2Hg(SCN)4 at various temperatures. Both compounds yield large asymmetry parameters indicating the existence of asymmetric π-electron distribution about a CN bond axis. The ionic character of metal-ligand bonds in the platinum and mercury complexes is estimated to be 28% and 58%, respectively. The temperature dependence of each component of quadrupole coupling can practically be interpreted in terms of a simple Bayer theory. Both complexes show the quadrupole coupling constant versus temperature curve faintly convex to the abscissa. This anomaly is attributable to vibronic interaction in a thiocyanate group

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