[gmx-users] AMBER atom type for Hydroxamate moeity

[Mark Abraham]

raja wrote:
> Hi Goette,
> Thanks for your mail. I have just find an article done a similar
> work...I am trying to reach them to get their parameters. Unfortunately
> I am not having Gaussian. Can you suggest me some other freely available
> quantum mechanics software ?

GAMESS should get the job done. It comes in two flavours, US and UK. 
Google will find it :-)

Mark