Epr studies of exchange coupled metal ions

Kokoszka, Gerald F.; Duerst, Richard W.

doi:10.1016/s0010-8545(00)80136-8

Cited by 96 publications

(23 citation statements)

References 133 publications

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“…3 and the parameters listed in Table 1 are in good agreement with previous results (18). The broad single absorption observed for anhydrous copper(I1) acetate is a common feature found in other anhydrous copper(l1) carboxylates (19,20).…”

Section: Resultssupporting

confidence: 90%

Copper(II) acetates: from dimer to monomer

Sharrock¹,

Melnı́k²

1985

Can. J. Chem.

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PATRICK SHARROCK and MILAN MELNIK. Can. J. Chem. 63, 52 (1985). The epr spectra at various frequencies of copper(l1) acetate anhydrous, monohydrate, monoacetic acid, and water -acetic acid adduct are presented and analysed. The presence of copper hyperfine splittings in the solid state epr spectra of this series of compounds is discussed. The frozen solution spectrum of copper(l1) acetate in acetic acid solution containing -2% water shows an exceptional resolution of A , hyperfine of 24 G. This is attributed to a key intermediate which explains the monomer-dimer dissociation mechanism. The influence of distortions on the structures of these compounds is presented.

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Section: Resultssupporting

confidence: 90%

Copper(II) acetates: from dimer to monomer

Sharrock¹,

Melnı́k²

1985

Can. J. Chem.

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“…Since these complexes are intensively studied, especially through E.P.R. spectroscopy [4][5][6][7][8], it appeared interesting to us to undertake a characterization of the effects which can be expected to result from the inclusion of the antisymmetric exchange term in the spin hamiltonian. It should also be A. Bencini and D. Gatteschi mentioned that d could be a first order effect when orbital degeneracy is present and might be included in the spin hamiltonian describing the exchange interaction between ions with orbitally degenerate ground states [9][10][11].…”

Section: (1)mentioning

confidence: 99%

The effect of antisymmetric exchange on the E.P.R. spectra of coupled pairs of transition metal ions

Bencini

Gatteschi

1982

Molecular Physics

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The antisymmetric exchange term (AET) in the exchange spin hamiltonian, d . Sz x Se, can have sizeable effects on the EPR spectra of heterodinuclear transition metal complexes. In this paper we review briefly the symmetry aspects of the AET and give a general formulation for its matrix elements for any pair of Sz, $2 values. The effects of the AET on the E.P.R. spectra are discussed and one case where its presence can be recognized is shown.

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“…tensor operators we shall have need of, and it is easy to show that they do indeed satisfy the commutation relationships in equation (4). A theorem involving irreducible tensor operators which we shall use extensively is the Wigner-Eckart theorem, which can be expressed as follows :…”

Section: Irreducible Tensor Operators and The Wigner-eckart Theoremmentioning

confidence: 99%

“…Electron paramagnetic resonance studies of crystalline dimeric complexes and highly doped single crystals containing pairs have been reviewed extensively [1][2][3][4]. The magnetic susceptibility of dimeric complexes has also been the subject of several reviews [3,[5][6][7], and a number of N.M.R.…”

Section: Introductionmentioning

confidence: 99%

The coupled representation matrix of the pair hamiltonian

1978

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A complete treatment of the spin hamiltonian for a pair of exchange coupled metal ions is given. The results obtained through the use of the Wigner-Eckart theorem are unrestricted with respect to the relative orientation of the single-ion tensors, and appropriate for both the S1 = $2 and 314 32 cases. The necessary constants are derived so that matrix elements within a given spin multiplet can be treated by ordinary operator algebra with the coupled representation state vectors, I SM), as a basis set. Explicit algebraic formulae for matrix elements between spin multiplets are presented for the first time. Symmetry restrictions are discussed in general and illustrated for the simple case of two ions related by an inversion centre, pair symmetry Ci.

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Epr studies of exchange coupled metal ions

Cited by 96 publications

References 133 publications

Copper(II) acetates: from dimer to monomer

Copper(II) acetates: from dimer to monomer

The effect of antisymmetric exchange on the E.P.R. spectra of coupled pairs of transition metal ions

The coupled representation matrix of the pair hamiltonian

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