Comprehensive definition of oxidation state (IUPAC Recommendations 2016)

@article{Karen2016ComprehensiveDO,
  title={Comprehensive definition of oxidation state (IUPAC Recommendations 2016)},
  author={Pavel Karen and Patrick McArdle and Josef Takats},
  journal={Pure and Applied Chemistry},
  year={2016},
  volume={88},
  pages={831 - 839}
}
Abstract Oxidation state (OS) is defined using ionic approximation of bonds. Two principal algorithms are outlined for OS determination in a chemical compound described by a Lewis formula or bond graph. Typical origins of ambiguous OS values are pointed out, and the relationship between OS and the dn electron configuration of transition metals is commented on. 

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