Inorganic Chemistry, Vol.48, No.18, 8703-8708, 2009
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 P2(1)/m, a = 4.8884(10) angstrom, b = 7.8676(14) angstrom, c= 8.0252(15) angstrom, beta = 106.524(2)degrees, V = 295.90(10) angstrom(3), Z=2. The glycine bridges Mn-II ions in mu(2) mode and sulfate in eta(3),mu(4) mode. Along the b direction, the neighboring Mn-II 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 (3(2);4(2);5(2)) (3(4);4(4);5(4);6(3)) 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 degrees.