You said:
> 8) Processed in P6, P312 and P321, all of course suggest twinning.
These will all suggest partial twinning, but not necessarily perfect
twinning. I would start to consider twinning a possibility if the
statistics for these lower symmetry space groups suggest a partial twin fraction
of near 0.5 _and_ perfect twinning, or if the stats suggest partial twinning
with a lower twin fraction. Xtriage gives a nice summary analysis of this.
You should read the output at the bottom of the xtriage log and go from there.
Your apparent psuedo-translational symmetry will confound some statistical
measures of twinning, so I would pay particular attention to the "l" statistic
developed by Padilla and Yeates and implemented in xtriage (and other packages).
Josh
_____________________________________________
- Joshua Warren, PhD ([log in to unmask]) -
- 212 Nanaline H. Duke -
- DUMC -
- home: (919) 918 7860 -
- work: (919) 681 5266 -
_____________________________________________
|