Hi,Thank you all the repliers who kindly offer their hands after my PREVIOUS posting message. I received around 12 messages in total and the concensus reply is:
P422 POINT GROUP WITH ONLY ONE MOLECULE IN ONE A.U.(peak (90 45 180) indicates P422 with the 2-fold crystallographic symmetry along the diagonal. The 4-fold symmetry is at the origin along C axis).
Hope this will help to my peers who has the similar wanderings. Thanks you again. Yanming
