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Dalton Trans. 2014 Nov 07;43(41):15308-12. doi: 10.1039/c4dt02275k.

Enforcement of a high-spin ground state for the first 3d heterometallic 12-metallacrown-4 complex.

Dalton transactions (Cambridge, England : 2003)

Peter Happ, Eva Rentschler

Affiliations

  1. Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany. [email protected].

PMID: 25200695 DOI: 10.1039/c4dt02275k

Abstract

Cu(II)(DMF)2Cl2[12-MC(Fe(III)N(Shi))-4](DMF)4·2DMF was synthesized as the first heterometallic transition metal 12-MC-4 complex. The purposeful placement of specific metal ions in the different sites of the metallacrown attains the establishment of a high-spin ground state. Inducing the anticipated superior exchange interactions, the central Cu(II) guest ion averts the common mutual cancellation of the spins, as is observed in the corresponding homometallic compounds.

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