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[(VIVO)2M II5] (M = Ni, Co) Anderson wheels†
Hector W. L. Fraser,Emily H. Payne,Arup Sarkar,Lucinda R. B. Wilson,Dmitri Mitcov,Gary S. Nichol,Gopalan Rajaraman,Stergios Piligkos,Euan K. Brechin
Dalton Transactions Pub Date : 07/02/2021 00:00:00 , DOI:10.1039/D1DT01710A
Abstract

Heterometallic Anderson wheels of formula [(VIVO)2MII5(hmp)10Cl2](ClO4)2·2MeOH (M = Ni, 1; Co, 2) have been synthesised from the solvothermal reaction of M(ClO4)2·6H2O and VCl3 with hmpH (2-(hydroxymethyl)pyridine). The metallic skeleton describes a centred hexagon, with the two vanadyl ions sitting on opposing sides of the outer ring. Magnetic susceptibility and magnetisation measurements indicate the presence of both ferromagnetic and antiferromagnetic exchange interactions. Theoretical calculations based on density functional methods reproduce both the sign and strength of the exchange interactions found experimentally, and rationalise the parameters extracted.

Graphical abstract: [(VIVO)2MII5] (M = Ni, Co) Anderson wheels
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