Magnetic studies on Fe^IICu(obbz) 1H₂O, where obbz = N, N¹-oxamido bis(benzoato)

A. K. Sra Novel Materials and Structural Chemistry Division, Bhabha Atomie Research Centre, Mumbai, 400 085, India

M. Tokumoto Electrotechnical Laboratory, Tsukuba, Ibaraki, 305-8568, Japan

J. V. Yakhmi Novel Materials and Structural Chemistry Division, Bhabha Atomie Research Centre, Mumbai, 400 085, India; E-mail: [email protected]

Abstract

We have synthesized Fe¹¹Cu¹¹ (obbz) 5H₂O (obbz = N,N ¹-oxamido bis(benzoato)) which exhibits a non-magnetic ground state, arising from antiferromagnetically coupled Fe²⁺Cu²⁺ pairs. Upon dehydration, we obtained FeCu(obbz)1H₂O which is a soft ferromagnet below about 10K, but unlike MnCu(obbz) 5H₂O and [CoCu(obbz)(H₂O)₄] 2H₂O it is not a sponge, that is it cannot reabsorb water spontaneously under ambient conditions.

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Magnetic studies on Fe^IICu(obbz) 1H₂O, where obbz = N, N¹-oxamido bis(benzoato)

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Magnetic studies on Fe^IICu(obbz) 1H₂O, where obbz = N, N¹-oxamido bis(benzoato)