Magneto-structural correlations in a family of ReIVCuII chains based on the hexachlororhenate(IV) metalloligand

Euan K. Brechin, Anders Hjordt H. Pedersen, Miguel Julve, José Martínez-lillo, Joan Cano

Research output: Contribution to journalArticlepeer-review

Abstract

Six novel one-dimensional chloro-bridged ReIVCuII complexes of formula {[Cu(L)4][ReCl6]}n, where L = imidazole (Imi, 1), 1-methylimidazole (Meim, 2), 1-vinylimidazole (Vim, 3), 1-butylimidazole (Buim, 4), 1-vinyl-1,2,4-triazole (Vtri, 5) and N,N’-dimethylformamide (DMF, 6) are characterised structurally, magnetically and theoretically. The structures exhibit significant differences in Cu–Cl bond lengths and Re–Cl–Cu bridging angles, resulting in large differences in the nature and magnitude of magnetic exchange interactions between the ReIV and CuII ions. Theoretical calculations reveal the coupling to be primarily ferromagnetic, increasing in magnitude as the bridging angle becomes smaller and the bond lengths shorten.
Original languageEnglish
JournalDalton Transactions
Early online date24 Jul 2017
DOIs
Publication statusE-pub ahead of print - 24 Jul 2017

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