The existence of an equilibrium between the carbyne complex 1 a and the isomeric carbene 1 b (Arf=3,5-C6H3(CF3)2) has been confirmed by a variable-temperature NMR study. Compound 1 a is the first carbyneruthenium compound that has been structurally characterized.
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González‐Herrero et al. (2000) studied this question.
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