Robert D. Feltham coauthored Principles of structure, bonding, and reactivity for metal nitrosyl complexes by John H. Enemark and Robert D. Feltham.
The study concerns metal nitrosyl complexes, where assigning electrons separately to the metal and nitric-oxide ligand can be ambiguous. Counting the metal d electrons together with the nitric-oxide antibonding electrons provides a useful classification without pretending that every complex has one uniquely localized oxidation-state description.
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