  The thermodynamic and magnetic properties of MnCl3(C12H8N2), have been
studied down to 2 K. The material is an S = 2 antiferromagnetic linear chain
that undergoes long-range ordering to a canted antiferromagnetic state at 23 K.
The comparison of magnetic data from polycrystalline samples with the results
of specific heat measurements using a pressed pellet of powder reveals the
importance of the length of the chains in the sample in relation to the
magnetic correlation length.
