A new intercalate Mn0.80PS3(alpha -aminoyridine)(0.40) was synthesized by t
he direct reaction of host MnPS3 with alpha -aminopyridine in the solvent o
f acetonitrile. X-ray powder diffraction indicated a complete intercalation
and well crystallized product. The expansion of lattice spacing is ca. 6.1
A, suggesting the orientation of pyridine ring perpendicular to the layers
of the host. Infrared spectrum implied the forming of protonated a-aminopy
ridine. The study of magnetic property by SQUID magnetometer indicated that
the material exhibits bulk spontaneous magnetization below 40 K.