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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 26, Number 12
BKCSDE 26(12)
December 20, 2005

Title	Influence of Jahn-Teller Distortion on the Magnetic Coupling in Oxalato-Bridged Copper(II) Dimers: An Orbital Interpretation of the Superexchange Mechanism
Author	Dae-Bok Kang
Keywords	Spin dimer, Superexchange, Magnetic coupling, Extended Huckel
Abstract	Extended Huckel molecular calculations have been used to analyze how the magnitude of exchange coupling is influenced by the structural distortions in a series of dinuclear six-coordinate copper(II) complexes bridged by the planar bis-bidentate oxalate anion. Copper(II) ions have distorted octahedral surroundings, one being axially elongated and the other compressed. The magnetic interaction is strong in the former complexes and very weak in the latter. This is interpreted as resulting from a switching of magnetic spin orbitals due to the structural distortions (bond elongation or compression) of the copper sites.
Page	1965 - 0
Full Text	PDF

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