Mechanism of tautomerisation in AgCN and AgNC?

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The discussion centers on the mechanism of tautomerization in silver cyanide (AgCN) and silver isocyanide (AgNC), with participants debating whether the process is truly tautomerization or simply isomerization. It is clarified that tautomerization involves a dynamic equilibrium between constitutional isomers, while the mechanism for KCN and KNC is also questioned. One participant acknowledges a misunderstanding about tautomerization, realizing it encompasses more than just hydrogen exchange. The conversation highlights the complexity of the isomerization process, particularly in relation to the bending mode excitation. Overall, the participants seek a clearer understanding of the mechanisms involved in these chemical transformations.
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Can anyone give a detailed mechanism for the tautomerization in AgCN and AgNC and is the same possible in KCN and KNC ??
 
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I don't know what you mean by "detailed mechanism" here, but I can't tell you that this is not a tautomerization, simply an isomerization.
 
Dynamic equilibrium existing between two constitutional isomers is TAUTOMERIZATION( a specific type of isomerization), right, that's what is happening here, but can a mechanism be presented??
 
Apologies, I was wrong. I thought that tautomerization only applied when H was being exchanged, but looking in the IUPAC Gold Book, it is more general than that. That said, I always heard it referred to as isomerization in the case of KCN, and even HCN with which I am more familiar.

Apart from writing KCN##\rightleftharpoons##KNC, I don't know of anything more complicated. I always understood it as being due to the excitation of the bending mode.
 

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