Those plots dont look too bad to me - not ideal but acceptable..
There are not many centric reflections so any stats are a bit suspect..
So I would go on working assuming no twinning - and try for a solution
from MR or exptl phasing..
That is not so easy I know, but IF you can get an MR solution
Do you have a pseudotranslation in the lower spacegroup? (If I could do
symmetry in my head, I could probably work it out).
If so, then it might be worth looking at the following excellent paper...
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2394827
Surprises and pitfalls arising
I dont think that is a twinning law, and that SG and cell dimensions are
unlikely to be twinned.
It could be really P1 I suppose with a twin operator -h,k,-l - ie the
SYM op is actually a twin operator..
But twinning usually shows up in the intensity statistic plots - have
you looked at the TR
Hello everyone,
I have collected a dataset with a resolution of 1.5 A. The indexing with
denzo went very well with the monoclinic cell (62.3120 84.2860 72.8720
90. 111.9620 90.).
After many trials to determine the structure with MR as well as SAD I
thought that my dataset might be
