Electron Spin Resonance Spectra and Conformations of Group 2 Ion Complexes with a Semidione Ligand

DOI: 10.1039/DT9810000604

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 604 - 608 (1981)

Update date:2022-08-11

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Authors:

Brustolon, Marina

Pasimeni, Luigi

Corvaja, Carlo

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Article abstract of DOI:10.1039/DT9810000604

The triplet states of the complexes formed between the semidione 1,1,4,4-tetramethyltetralin-2,3-dione and Be(2+), Mg(2+), Ca(2+), Sr(2+), Ba(2+), Zn(2+) have been studied by e.s.r. spectroscopy in frozen solutions of 2-methyl-tetrahydrofuran.The e.s.r. spectrum of has been attributed to a quartet state.The zero-field splitting parameters for the complexes have been obtained and compared with those calculated by electron dipole-dipole interaction for a number of conformations of the complexes.The conformations giving the best fit are reported.The discrepancy between experimental and calculated zero-field splitting parameters for the complexes of Sr(2+) and Ba(2+) has been explained by an additional spin-orbit contribution.

Full text of DOI:10.1039/DT9810000604

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