1. Department of ChemistryCollege of ScienceSultan Qaboos University Private Bag 36, Al-Khod 123 Muscat Sultanate of Oman
2. School of Science and TechnologyKwansei Gakuin University 2-1 Gakuen Sanda 669-1337 Japan
3. Department of PhysicsCollege of ScienceSultan Qaboos University Private Bag 36, Al-Khod 123 Muscat Sultanate of Oman
4. Department of ChemistryUniversity of Sheffield Sheffield S3 7HF UK
5. Max-Planck-Institut für Chemische Energiekonversion Stiftstrasse 34–36 45470 Mülheim an der Ruhr Germany