Does TON in catalysis have any units? I have seen overlap of TOF and TON (TOF=TON/t), but papers seem to be using s-1 for both. I will be grateful if anybody can shed light on a proper discrimination between the two...
Edit: I did find this article that gives a very nice description of TON in different cases:
http://onlinelibrary.wiley.com/doi/10.1002/cctc.201100159/pdf
I believe that here we can consider 2 options to explain: 1. TON refers to the absolute total number of turns (in this case, the value of TON must be dimensionless). The TOF corresponds to the frequency (number of revolutions per second according to the formula TOF=TON/t); 2. TON means the number of revolutions per time unit (in this case per second, i.e. the frequency) and has the unit of s^-1. Then, respectively, the TOF will denote angular velocity (circular frequency), expressed in radians per second, i.e. TOF = 2pi*TON [rad/s, or s^-1 too]), I can give a more reasoned answer after meeting with the proposed article.
Respected Prof. Morchenko,
My apologies for not being explicit in my question. I was asking about the TON and TOF values pertaining to enzyme and organometallic catalysts.
Thank you for taking the time to answer my question.
Subramaniyam
If it is the number of cycles in the reaction, that some sense has my first answer of the two.
Definitely. In reality the definitions are similar; the only difference being in the case of catalysis instead of revolutions it will be reactions catalyzed.
Thank you!
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