Abstract:
Aspects of orbital paramagnetism and intermolecular interactions are discussed in relation to compounds containing octahedral $M\mathrm F_6$ molecules (where $M$ is a transition metal) and Chevrel phase cuboctahedron systems $M_6 X_8$. The 100th anniversary of the birth of Professor S A Altshuler, a pioneer in the use of NMR for studying Van Vleck magnetism, is a motivation for this review.
PACS:31.15.E-, 75.20.-g, 82.56.-b
Received:May 31, 2010 Revised:February 20, 2011 Accepted: February 11, 2011