Glycine-Templated Manganese Sulfate with New Topology and Canted Antiferromagnetism

A new glycine-templated manganese(II) sulfate, (C2NO2H5)MnSO4 (1), has been solvothermally synthesized and characterized crystallographically and magnetically. Crystal data for 1: monoclinic, space group P21/m, a = 4.8884(10) Å, b = 7.8676(14) Å, c = 8.0252(15) Å, β = 106.524(2)°, V = 295.90(10) Å3, Z = 2. The glycine bridges MnII ions in μ2 mode and sulfate in η3,μ4 mode. Along the b direction, the neighboring MnII ions were bridged to each other by two sulfate ions and one glycine ligand to form a triple-stranded braid. The adjacent braids were connected via the sulfate ions to give a two-dimensional framework with a novel binodal 4,6-connected (32;42;52)(34;44;54;63) topology. The compound exhibits a spin-canted antiferromagnetic behavior with a weak ferromagnetic transition below 9 K, and the estimated canting angle is 0.13°.