Single-crystal electronic and electron spin resonance spectra of four trigonal bipyramidal copper(II) complexes
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 10,p. 1005-1009
- https://doi.org/10.1039/dt9740001005
Abstract
The polarised single-crystal electronic and e.s.r. spectra of four complexes of the copper(II) ion involving a trigonal bipyramidal stereochemistry have been measured. The g-factors of each of the complexes correlate with a dz2 ground state and justify a trigonal bipyramidal description of the local molecular stereochemistries. The electronic spectra have been assigned in C2v symmetry and yield one-electron orbital sequences consistent with that predicted by a crystal field model in D3h symmetry, namely dz2 > dx2–y2,dxy > dxz,dyz. The detailed sequence observed for each complex is interpreted in terms of the local bond lengths and bond angles present and an attempt is made to assess the role of π-bonding in the Cu(bipy)2 2+ cation.Keywords
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