1. Department of Chemistry,
Life Sciences, and Environmental Sustainability, University of Parma, Parco Area delle Scienze
11A, 43124 Parma, Italy
2. Department of Chemistry and Biochemistry, Shippensburg University, Shippensburg, Pennsylvania 17257-2200, United States
3. Department
of Chemistry and Industrial Chemistry, University of Pisa, Via Risorgimento
35, I-56126 Pisa, Italy