1. Institute for Theoretical Chemistry, University of Vienna, Waehrinegrstrasse 17, A 1090 Vienna, Austria, Departments of Physics, Siena College, 515 Loudon Road, Loudonville, New York 12211, Department of Chemistry, Northwest Missouri State University, 800 University Drive, Maryville, Missouri 64468, Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nam. 2, CZ-16610...