Magnetic structure of antiferromagnetic MnCl2·4H2O

Abstract
The magnetic structure of monoclinic MnCl2 ·4H2O has been determined by analysis of neutron-diffraction data on single crystals. A collinear antiferromagnetic structure was found in which the magnetic and crystallographic unit cells were the same. The Mn++ spins were found to point neither along the c axis nor along the c axis (perpendicular to the ab plane), but in a direction intermediate between the two.