1. Department of Chemistry
2. A. P. S. University
3. Rewa
4. 486003
5. India
6. Laboratorio de Estudios Cristalográficos
7. IACT
8. CSIC-Universidad de Granada
9. E-18100 Armilla
10. Spain
11. Department of Inorganic & Structural Chemistry
12. Howard University
13. Washington DC
14. 22031 USA