1. FB C - Physikalische & Theoretische Chemie, Bergische Universität Wuppertal, Gaußstraße 20, D-42199 Wuppertal, Germany
2. Faculty
of Chemistry, Department of Chemistry, “Alexandru Ioan Cuza“ University of Iasi, Carol I Boulevard, 11, 700506 Iasi, Romania
3. School
of Chemistry, University of Leeds, Leeds LS2 9JT, U.K.