ESR of exchange coupled Cr3+ pairs in the dimer Di-μ-Diphenylphosphinatoacetyl-Acetonatochromium(III) (DPACr) |
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| Authors: | P.D. Krasicky J.C. Scott R.H. Silsbee A.L. Ritter |
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| Affiliation: | Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY 14853, U.S.A.;Department of Physics, Virginia State University, Blacksburg, VA 24061, U.S.A. |
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| Abstract: | DPACr is a dimeric phosphinate in which the pairs of Cr3+ ions are superexchange coupled via -OPO- bridges. The consequences of site anisotropy and inequivalence are demonstrated in the ESR spectra and can be derived using a perturbation scheme on the appropriate Hamiltonian. First and second order fine structure, multiplet shifts, g-shifts and g-anisotropies are discussed. This dimeric system is the simplest member of a class of poly(chromium phosphinates). |
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