Synthesis, Structures, and Magnetic Properties of Two Tetranuclear Copper Complexes with End‐on Azido and Phenoxo Bridges Containing Chiral Schiff Base Ligands

Abstract

AbstractThe copper complexes [Cu4(μ‐L1)2(μ1, 1‐N3)2·(CH3O)2] (1) and [Cu4(μ‐L2)2(μ1, 1‐N3)2(N3)2]·(H2O)2 (2) [H2L1 = (1R,3S)‐N′,N′′‐bis[salicylidene]‐1, 3‐diamino‐1, 2, 2‐trimethylcyclopentane and H2L2 = (1R,3S)‐N′,N′′‐bis[5‐methylsalicylidene]‐1, 3‐diamino‐1, 2, 2‐trimethylcyclopentane] were synthesized and structurally characterized by elemental analyses, IR spectroscopy, and single crystal X‐ray diffraction. Both are tetranuclear complexes consisting of dinuclear copper moieties [Cu2L1]2+ or [Cu2L2]2+ connected by two end‐on azido bridges. Low temperature magnetic studies indicate that weak antiferromagnetic couple dominates in 1 and 2.