1. Institute for Inorganic Chemistry, University of Bonn, Gerhard‐Domagk‐Strasse 1, 53121 Bonn, Germany
2. Current address: Universitas Brawijaya Chemistry Department, Malang, Indonesia
3. Mulliken Center for Theoretical Chemistry, Institute für Physical and Theoretical Chemistry, University of Bonn, Beringstrasse 4, 53115 Bonn, Germany