From: SMTP%"sianc.davies@bbsrc.ac.uk" 11-OCT-2000 14:40:53.21 To: cockcroft@gordon.cryst.bbk.ac.uk CC: Subj: project Dear Jeremy, I am having problems with refining the structure in P21/n. I cannot get the calculated high angle pattern to agree with the observed data. The peak positions do not agree (implying a problem with the unit cell ??). I haven't changed any unit cell axes but have refined the beta angle. Can you advise me? Thanks Sian [Picture attachment]