Self-assembly of rare octanuclear quad(double-stranded) cluster helicates showing slow magnetic relaxation and the magnetocaloric effect

Four rare quad(double-strand) cluster helicates containing Ln8 polyhedron cores, namely [Ln 8 (HL) 4 L 4 (OH) 6 (H 2 O) 2 (acac) 2 ](ClO 4 ) 4 ·2CH 3 OH·12H 2 O (Ln = Gd for 1 , Tb for 2 , Dy for 3 , and Ho for 4 , respectively), have been assembled by using lanthanide salts and flexible ligands of...

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