Nitrosyl metal isocyanides

Many of the electrochemical studies of metal carbonyl derivatives, and indeed of other species, have sought to correlate redox potentials with other physical or spectroscopic properties. These studies will be described briefly where appropriate but the reader may wish to refer to a review (33) of such correlations in coordination chemistry. A more theoretical basis has also been provided for the often noted relationship between ° and infrared carbonyl, nitrosyl, or isocyanide stretching frequencies (34). 

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