[(VIVO)2M5II] (M = Ni, Co) Anderson wheels

Heterometallic Anderson wheels of formula [((VO)-O-IV)(2)M-5(II)(hmp)(10)Cl-2](ClO4)(2)center dot 2MeOH (M = Ni, 1; Co, 2) have been synthesised from the solvothermal reaction of M(ClO4)(2)center dot 6H(2)O and VCl3 with hmpH (2-(hydroxy-methyl)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.

Automated summary

Heterometallic Anderson wheels were synthesized through solvothermal reaction, featuring a metallic skeleton in a centered hexagon with both ferromagnetic and antiferromagnetic exchange interactions. Theoretical calculations reproduced experimentally found exchange interactions.