> Also only centric phases are restricted. Yes. *Related* would have been be the proper term for symmetry related reflections. In detail:
The phases of symmetry related reflection still are *related* by phi(hR)=phi(h)-2pihT (no restrictions on phi(h)) For centrics phi(h)=pihT or pi(hT+1) the phases are *restricted* to certain phi(h) values. I failed to state the exact phase relations. Sorry for the confusion. Thx, BR -- Ian > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bernhard Rupp > Sent: 26 June 2008 19:54 > To: 'Hidong Kim' > Cc: CCP4BB@JISCMAIL.AC.UK > Subject: RE: [ccp4bb] Friedel vs Bijvoet > > I quote from these pages: > > "Bijvoet pairs are Bragg reflections which are true symmetry > equivalents to a Friedel pair. These true symmetry equivalents have > *equal amplitudes, even in the presence of anomalous scattering*." > > Sounds more like centric or perhaps simply symmetry related to me. > > A few lines below: > > " A Bijvoet difference refers to the difference in measured amplitude > for a Bijvoet pair" > > I don't think you can have it both ways ?? > > BR > > Disclaimer This communication is confidential and may contain privileged information intended solely for the named addressee(s). It may not be used or disclosed except for the purpose for which it has been sent. If you are not the intended recipient you must not review, use, disclose, copy, distribute or take any action in reliance upon it. If you have received this communication in error, please notify Astex Therapeutics Ltd by emailing [EMAIL PROTECTED] and destroy all copies of the message and any attached documents. Astex Therapeutics Ltd monitors, controls and protects all its messaging traffic in compliance with its corporate email policy. The Company accepts no liability or responsibility for any onward transmission or use of emails and attachments having left the Astex Therapeutics domain. Unless expressly stated, opinions in this message are those of the individual sender and not of Astex Therapeutics Ltd. The recipient should check this email and any attachments for the presence of computer viruses. Astex Therapeutics Ltd accepts no liability for damage caused by any virus transmitted by this email. E-mail is susceptible to data corruption, interception, unauthorized amendment, and tampering, Astex Therapeutics Ltd only send and receive e-mails on the basis that the Company is not liable for any such alteration or any consequences thereof. Astex Therapeutics Ltd., Registered in England at 436 Cambridge Science Park, Cambridge CB4 0QA under number 3751674
