I think that you are looking for A.J.C. Wilson, Acta Cryst. 17 (1964) 1591-2.
George Prof. George M. Sheldrick FRS Dept. Structural Chemistry, University of Goettingen, Tammannstr. 4, D37077 Goettingen, Germany Tel. +49-551-39-3021 or -3068 Fax. +49-551-39-22582 On Wed, 17 Sep 2008, Ian Tickle wrote: > All - I've been trying to track down a paper (or papers) where it was > shown that the epsilon values (symmetry factors) for space groups with > pure rotation axes are not integers as is usually assumed (but still > integers for screw axes). It's almost certainly in Acta Cryst., > probably in the 60's or 70's and I think it was by Main and/or Woolfson > and/or Rogers (but I could be completely wrong about that part), and it > might just be in an Appendix. I tried the obvious searches on the IUCr > website with no luck (I was rather surprised to find that searching for > 'symmetry' or 'space group' by 'Main' and/or 'Woolfson' yielded no hits > - I find that very hard to believe!). If anyone knows the reference I'd > be eternally grateful! > > Cheers > > -- Ian > > ******************************************** > Ian J. Tickle, DPhil. > Director of X-ray Technology > Astex Therapeutics Ltd > 436 Cambridge Science Park > Milton Road, Cambridge > CB4 0QA, UK > Tel: +44(0)1223 226214 > Fax: +44(0)1223 226201 > www.astex-therapeutics.com > > > > 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 > >
