Any crystal can be worked at as P1.
What you know is that your crystal is not p212121
It can be
P21212
P21221
P22121
P1121
P1211
P2111
P112
P121
P211
P1
And then there is twinning ...
Suggestions:
Use Pointless or Phenix.xtriage, feeding the unmerged p1 data to decide.
Use the Zanuda serv
You can try zanuda from York's site.
www.ysbl.york.ac.uk/YSBLPrograms/index.jsp
It may help. It may be that you have a twinned crystal. As far as I know best
available test for twinning is L-test (truncate produces this test). When you
go from P1 to P212121 if L-test shows increased twinning
Dear all,
I have a data, and it has R/Rfree problem.
The data could be processed as P212121 and P1.
The resolution was 2.9, and unit cell parameters were a=73.527, b=90.035,
c=237.980, α=β=μ=90 and a=73.709, b=90.099, c=238.172, α=89.939,
β=89.945, μ=89.993 for P212121 and P1, respectively.
