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1. There are over 2000 restraints. Need to mention what they are and why they are required. It appears that every lighter atom (C, N and O) has thermal restraints. This could hide unresolved disorder and other potential problems with the structure.

2. Some of the atoms have been left isotropic. In each case a sensible reason is required as to why this has happened.

3. There are atoms at less than full occupancy. These should be briefly commented upon and checked. There are also problems as some result in impossible occupancies, such as OW8 and OW9 are only 2.28A apart yet together total 1.08 oxygen atoms. All should be investigated.

4. Also need to check that got the nitrogen atoms of the imidazole are in the right place. Would expect there to be strong N-H¡­O hydrogen bonds but not C-H¡­O, yet for some the C¡­O distance is shorter than the N¡­O distance.  (see N12/C28, N4/C7) Please check and adjust as appropriate.

5. Some of the bond lengths and angles of the bbi ligand are rather extreme and should be checked as could suggest unresolved disorder.

[ Last edited by ¶¹¶¹3327 on 2009-9-27 at 08:12 ]
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