Applying Sprik constraint method to the coordination number

Sal sria... at
Thu Jan 14 17:21:36 UTC 2016

Dear CP at K users,
I'd appreciate if you can help me to set up constraint to the coordination 
number of a specific atom.
I know there is COLVAR defined for coordination number, but I don't want to 
do free energy and metadynamics with DO_HILLS,....
My aim is to prevent bonding of H atoms to a negatively charged particle.
This can be done in CPMD  using "COORSP" 

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