CCL: Complexation energy in a solvent.




 Dear colleague,
In the case of non isomolecular reactions, like A+B -> AB,
the PCM method (with continuous solvent) is very problematic,
due to a poor balance in the translation and rotation entropies.
One empirical way is to use the Wertz formula, which is often
very efficient.
I use it often with success, see for example:
dx.doi.org/10.1021/jp2071524
P. Archirel et al.
J. Phys. Chem. B 2012, 116, 1467−1481

and more recently:
https://dx.doi.org/10.1021/acs.jpca.0c08038
J. Phys. Chem. A XXXX, XXX, XXX−XXX

(you also may contact me directly if you need)
Best wishes,
Pierre Archirel,
 ICP universite Paris-Saclay, pierre.archirel:::universite-paris-saclay.fr


Hello,

I am trying to calculate the binding energy of a complex, A---B, in a 
continuous solvent, but am not sure how I can do that. I tried the
energy difference E(A---B) - E(A) - E(B), each species in a solvent
cavity, but the result is very high.
Can anyone give me a hit, please?

Best regards,

Sergio

Sergio Emanuel Galembeck
Computational Quantum Chemistry Laboratory
Departamento de Química - FFCLRP-USP
Av. Bandeirantes, 3900
14040-901 - Ribeirao Preto-SP
Brasil

phone: +55(16)33153765


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  Pierre Archirel
  Groupe Théosim: Théorie et Simulation
  Laboratoire de Chimie Physique      Tel: 01 69 15 63 86
  Bât 349                             Fax: 01 69 15 61 88
  91405 Orsay Cédex
  France            pierre.archirel*o*universite-paris-saclay.fr
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