Hi Rajesh,

I guess they could (in most programs), but the question is whether they should? Can't you try both options to see which one works best in your specific case? 

Pavel

On Sat, May 5, 2012 at 6:02 AM, Rajesh Kumar <[log in to unmask]> wrote:
Dear all,
Is ligands and metals could also be NCS restrained during the refinement. I have Na+ and SO4 in my model which are NCS related.
Thanks for the help
Warm regards
Rajesh
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