A study of the covalent bonding in hexaiodoiridate complex ions B.D. El-Issa, A. Katrib, R. Ghodsian, S. Addassi and B. Salsa’ J. Chim. Phys., 84 (1987) 849-853 Published online: 13 June 2017 DOI: 10.1051/jcp/1987840849