1. Institut for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
2. Boron Specialties, LLC; 2301 Duss Ave., Box 35 Ambridge PA 15003 USA
3. Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore- 560012 India