Li$_5$ as a pseudorotating planar cluster
  A pseudorotating state of Li$_5$ observed in a recent EPR experiment is investigated using the local density functional method. The calculated isotropic spin population indicates that a planar $C_{2v}$ structure is more consistent with the experimental result than a suggested trigonal bipyramid. A new pseudorotating state based on the planar structure is proposed. 
Ryoichi Kawai and Joseph F. Tombrello (University of Alabama at   Birmingham), John H. Weare (University of California, San ...