Enhancing the effective energy barrier of a Dy(Ⅲ) SMM using a bridged diamagnetic Zn(Ⅱ) ion

摘要

Field induced single-molecule-magnet behaviour is observed for both a heterodinuclear [ZnDy(L~-)_2]~(3+) complex (1) and a mononuclear [Dy(HL)_2]~(3+) complex (2), with effective energy barriers of 83 cm~(-1) and 16 cm~(-1), respectively. Insights into the relaxation mechanism(s) and barrier heights are provided via ab initio and DFT calculations. Our findings reveal an interesting observation that the U_(eff) of SMMs can be enhanced by incorporating diamagnetic metal ions.