Zur paramagnetischen Elektronenresonanz metallorganischer Sandwich-Verbindungen,Teil lI

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Abstract
On the basis of the ionic model of ROBERTSON and MCCONNELL the energy levels and the wave functions of Ni (C5H5)2 are calculated quantitatively and the magnetic resonance properties derived from them. The results explain the fact that no ESR spectrum of the compound has been observed up till now. The calculations for Co (C5H5)2 show that the magnetic resonance effect is strongly dependent on the magnitude of the rhombic distortion (JAHN-TELLER effect) compared to the spinorbit coupling. The hyperfinestructure spectrum of a magnetic-diluted single crystal is qualitatively explained.