Mn(dca)2(o-phen) {dca = dicyanamide; o-phen = 1,10-phenanthroline}: Long-range magnetic order in a low-dimensional Mn-dca polymer

Mn(dca)2(o-phen) is a collinear antiferromagnet with Mn2+ moments oriented in the ac-plane. Long-range magnetic order occurs below TN = 1.85 K as shown by several probes including magnetic susceptibility, muon-spin relaxation and neutron diffraction.