Dear George My student class would not find that IUCr dictionary definition helpful. What they do find helpful is to state that they cannot contain an inversion or a mirror. To honour Sohnke is one thing but is it really necessary as a label? You're from Huddersfield I am from Wakefield ie let's call a spade a spade (not a 'Black and Decker'). Cheers John
Prof John R Helliwell DSc > On 2 May 2014, at 17:01, George Sheldrick <gshe...@shelx.uni-ac.gwdg.de> > wrote: > > In my program documentation I usually call these 65 the Sohnke space groups, > as defined by the IUCr: > http://reference.iucr.org/dictionary/Sohnke_groups > > George > > >> On 05/02/2014 02:35 PM, Jim Pflugrath wrote: >> After all this discussion, I think that Bernhard can now lay the claim that >> these 65 space groups should really just be labelled the "Rupp" space >> groups. At least it is one word. >> >> Jim >> >> From: CCP4 bulletin board [CCP4BB@JISCMAIL.AC.UK] on behalf of Bernhard Rupp >> [hofkristall...@gmail.com] >> Sent: Friday, May 02, 2014 3:04 AM >> To: CCP4BB@JISCMAIL.AC.UK >> Subject: Re: [ccp4bb] Confusion about space group nomenclature >> …. >> >> Enough of this thread. >> >> Over and out, BR > > > -- > Prof. George M. Sheldrick FRS > Dept. Structural Chemistry, > University of Goettingen, > Tammannstr. 4, > D37077 Goettingen, Germany > Tel. +49-551-39-33021 or -33068 > Fax. +49-551-39-22582 >
