New two-dimensional Mn(ii) metal-organic framework featured spin canting

摘要

two-dimensional (2D) complex {[Mn_(1.5)(L)(bpe) _(1.5)]·(bpe)_(0.5)}_n (1) (H_3L = 3-(2-carboxy-phenoxy)phthalic acid, bpe = 1,2-bis(4-pyridyl)ethene), consisting of manganese(ii) chains and bridging bpe ligands, has been synthesized and characterized. The magnetic behavior of 1 can be simulated as a -J _1J_1J_2- alternating chain. Magnetic studies show that this complex magnetic behavior belongs to spin canting and exhibits an unusually high T_c around 40 K. A theoretical study based on DFT-BS calculations provides some insight into the underlying mechanism of the novel magnetic properties.