[1] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA
[2] San Jose State Univ, Dept Chem, San Jose, CA 95292 USA
[3] Franklin & Marshall Coll, Dept Chem, Lancaster, PA 17604 USA
[4] Coll Holy Cross, Dept Chem, Worcester, MA 01610 USA
[5] Univ Illinois, Dept Chem, Urbana, IL 61801 USA
[6] Madison Area Tech Coll, Madison, WI 53705 USA