Re: space group of NaxCoO2

2004-08-03 Thread pstephens
I just recalled a more directly relevant paper for your question: M.L. Foo et al., Phys. Rev. Letters 92, 247001 (2004), published about six weeks ago. That paper is much more about electronic properties through the phase diagram as a function of x, but it will help get you oriented, and has some

EXPGUI and constraints?

2004-08-03 Thread Christoph Salzmann
Dear all, I'm using the EXPGUI software to refine the structure of a monoclinic phase of ice. (ice V) The diffractograms were recorded on the D2B instrument at the ILL. As a result of this study, we would like to see changes in the occupancies of the deuteria positions. Due to the low

EXPGUI and constraints?

2004-08-03 Thread Von Dreele, Robert B.
Dear Christoph (and others), The constraints within GSAS are limited to pairs of parameters. You describe a circumstance in which the total unit cell contents from a multiple atom sites is known from stoichiometry; this is best handled with a restraint. The restraints in GSAS are not accessible

Re: XRDU:RIET: Graphically comparing similar molecular structures CrystMol software

2004-08-03 Thread L. Cranswick
Queries on available graphics software for comparing similar structures have been pseudo-common on the sci.techniques.xtallography newsgroup. So I thought it might be useful to post about a new feature in the CrystMol software for Mac and MS-Windows by David Duchamp: http://www.crystmol.com/