[1] PRINCETON UNIV, DEPT CHEM, PRINCETON, NJ 08544 USA
[2] GUNMA UNIV, FAC EDUC, MAEBASHI, GUNMA 371, JAPAN
[3] GAKUSHUIN UNIV, CTR COMP, TOKYO 171, JAPAN
[4] GAKUSHUIN UNIV, DEPT PHYS, TOKYO 171, JAPAN
[5] UNIV ERLANGEN NURNBERG, INST ORGAN CHEM, D-8520 ERLANGEN, GERMANY