Affiliation: | 1. Institute of Chemistry, University of Bialystok, Hurtowa 1, 15‐399 Bialystok (Poland), Fax: (+48)?85‐7470113;2. Department of Chemistry, University of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968 (USA), Fax: (+1)?915‐7478807 |