I have always had great faith in the L test and other statistics to detect twinning.. But now I have a puzzling data set. Seems to be orthorhombic with a, b and c all different One molecule/asymm unit and no NC translation.. BUT clear indication of twinning given by second moments, etc..
I have seen this before when the spacegroup was actually monoclinic and the pointless analysis of the two fold axes along a b or c showed one was better than the other two and in fact the crystal proved not to be twinned when the data was processed as monoclinic.. But in this case no amount of reprocessing gets rid of the twin indicator .. Does anyone have any suggestions of why this might be? ( The data quality isnt great - 2.5A but the Rmerges are reasonable..) Eleanor ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
