A novel tetranuclear lanthanide(III)-copper(II) complex of the macrocyclic oxamide [PrCu3] (macrocyclic oxamide = 1,4,8,11-tetraazacyclotradecanne-2,3-dione): synthesis, structure and magnetism

A tetranuclear complex [Pr(CuL)3(H2O)2](SCN)3 · 1.5H2O (L = 1,4,8,11-tatraazacyclotradecanne-2,3-dione) has been synthesized. The structure of the title complex consists of a cationic PrCu3 core, noncoordinated monovalent SCN− anions and H2O molecules; the temperature-dependent magnetic susceptibilities were analyzed by an approximate treatment, leading to J = −1.62 × 10−2 cm−1, Δ = 3.12 cm−1, gCu = 2.13, respectively.