MILLIMETER BAND EPR-SPECTRA REVEAL LARGE ZERO-FIELD SPLITTINGS IN COPPER(II)-SEMIQUINONATO COMPLEXES

被引：22

作者：

DEI, A ^{[1
]}

GATTESCHI, D ^{[1
]}

PARDI, L ^{[1
]}

BARRA, AL ^{[1
]}

BRUNEL, LC ^{[1
]}

机构：

[1] CNRS,SERV NATL CHAMPS INTENSES,F-38042 GRENOBLE,FRANCE

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 175卷 / 06期

关键词：

D O I：

10.1016/0009-2614(90)85586-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The magnetic interaction between copper (II) and ortho-semiquinones has been investigated by the EPR technique using a spectrometer operating in the millimeter-wavelength range. The polycrystalline-powder EPR spectrum of [Cu(Me3[12]N3)-(DTBSQ)]CIO4 (Me3[12]N3 = 2,4,4-trimethyl-1,5,9-triazacyclododec-1-ene; DTBSQ = 3,5-di-t-butyl-o-semiquinonato) recorded at 4.2 K with an exciting frequency of 8.17 cm-1, is typical of a spin triplet with a large zero-field splitting (ZFS). The ZFS parameters have been obtained directly from the spectrum using the Wasserman equations. Both dipolar and exchange contributions to the ZFS are discussed within a molecular-orbital framework.

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页码：589 / 592

页数：4

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