Available evidence now makes it possible to speculate with more certainty on the extent of participation of d orbitals in molecular bonding.

Institute of Physics, Federal University of Goiás, Goiânia, Goiás 74690-900, Brazil CNanoMed, Center for Integrative Nanomedicine Research, Federal University of Goiás, Goiânia, Goiás 74690-631, ...