NOVEL ORGANIC IONS OF HIGH-SPIN STATES .4. ESR STUDIES ON A MONOANIONOF A PROTOTYPE SYSTEM HAVING 2 CARBENIC UNITS COUPLED BY A WEAK INTRAMOLECULAR EXCHANGE INTERACTION, BIPHENYL-3,3'-BIS(PHENYLMETHYLENE)

Authors
NAKAMURA T MOMOSE T SHIDA T KINOSHITA T TAKUI T TEKI Y ITOH K
Citation
T. Nakamura et al., NOVEL ORGANIC IONS OF HIGH-SPIN STATES .4. ESR STUDIES ON A MONOANIONOF A PROTOTYPE SYSTEM HAVING 2 CARBENIC UNITS COUPLED BY A WEAK INTRAMOLECULAR EXCHANGE INTERACTION, BIPHENYL-3,3'-BIS(PHENYLMETHYLENE), Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 278, 1996, pp. 309-318
Citations number
33
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
278
Year of publication
1996
Pages
309 - 318
Database
ISI
SICI code
1058-725X(1996)278:<309:NOIOHS>2.0.ZU;2-G
Abstract
The monoanion of biphenyl-3,3'-bis(phenylmethylene) (BP-3,3'-BPM) was produced and its electronic states were studied by ESR spectroscopy to conclude that the ground state is spin-doublet and that the first exc ited state is quartet lying above the ground state by 35cm(-1). The ef fective exchange interaction between the two carbenic units was analyz ed in comparison with the interaction in the neutral parent BP-3,3'-BP M. The spin polarization of the pi-electrons dictates the spin alignme nt in the anion as in the case of the previously studied neutral BP-3, 3'-BPM.