1. Laboratory
of Structural Chemistry, Department of Applied Chemistry, College
of Engineering, Kyungpook National University, Daegu 702-701, Korea
2. Department
of Physics, College of Natural Science, Kyungpook National University, Daegu 702-701, Korea
3. Department
of Chemistry, University of Hawaii, 2545 The Mall, Honolulu, Hawaii 96822-2275, United States