A heterometallic backbone has been obtained for the first time in a trinuclear complex of bis(2-pyridyl)amide (dpa), namely, [Co2PdCl2(dpa)4] (1). The crystal structure (depicted), magnetic measurements, and DFT calculations suggest that its ground state results from coupling of two high-spin CoII ions separated by a magnetically inactive Pd center. Hence, the magnetic behavior of CoII in 1 strongly differs from that in its tricobalt homologue.
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Rohmer et al. (2007) studied this question.
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