Synthesis, structures and magnetic properties of heterometallic Mn2IIILn2III tetranuclear complexes

Four isostructural heterometallic Mn–Ln tetranuclear complexes of formula [Mn2IIILn2(bdea)2(bdeaH)2(piv)6]·2MeCN (Ln = La (1), Ce (2), Pr (3) and Nd (4)), where bdeaH2 is N-butyldiethanolamine and (piv)− is pivalate, are reported. X-ray crystallographic structure analysis shows that complexes 1–4 are centrosymmetric with a “butterfly” core. The magnetic susceptibilities (dc and ac) for all these complexes have been measured. Slow relaxation of the magnetization is observed in compounds 2 and 4.

Graphical abstractFour isostructural heterometallic Mn–Ln tetranuclear complexes of formula [Mn2IIILn2(bdea)2(bdeaH)2(piv)6]·2MeCN (Ln = La (1), Ce (2), Pr (3) and Nd (4)), where bdeaH2 is N-butyldiethanolamine and (piv)− is pivalate, are reported. X-ray crystallographic structure analysis shows that complexes 1–4 are centrosymmetric with a “butterfly” core. The magnetic susceptibilities (dc and ac) for all these complexes have been measured. Slow relaxation of the magnetization is observed in compounds 2 and 4.Figure optionsDownload full-size imageDownload as PowerPoint slide