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Magnetic Ordering in Self-assembled Materials Consisting of Cerium(III) Ions and the Radical Forms of 2,5-TCNQX2 (X=Cl, Br)

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  • K.R.D. thanks the National Science Foundation (CHE-0957840) and the Welch Foundation (grant A-1449) for support of this work. Financial support for M.F.B.R. with a CONACyT fellowship is gratefully acknowledged. TCNQ=7,7,8,8-tetracyanoquinodimethane; X=Cl, Br.

Abstract

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Ribbon-like coordination polymers composed of CeIII ions and TCNQX2 (TCNQ=tetracyanoquinodimethane; X=Cl, Br), but not TCNQ radicals, show unexpected magnetic ordering (see picture; Ce green). This behavior reveals remarkable subtlety for magnetic properties of lanthanide–organic materials.

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