Negative Biso / absorption in TOPAS.

2010-02-10 Thread Jacco van de Streek
Dr Jacco van de Streek Senior Scientist Avant-garde Materials Simulation Freiburg im Breisgau, Germany

Re: Negative Biso / absorption in TOPAS.

2010-02-10 Thread Jacco van de Streek
ow 110, and its formula is C22 H6 Cl8 N4 O2. Space group P-1, Z'=1/2. Best wishes, -- Dr Jacco van de Streek Senior Scientist Avant-garde Materials Simulation Freiburg im Breisgau, Germany

Re: RIET: Structures for Sodium Oxalate (Na2 C2 O4)?

2001-06-16 Thread Jacco van de Streek
ough) and has been incorporated in the Cambridge Structural Database. Refcodes NAOXAL, NAOXAL01 and NAOXAL02 are sodium oxalate Refcode NAOXAM is sodium oxalate monohydrate. Best wishes, -- Jacco van de Streek (mailto:[EMAIL PROTECTED]) Dept. of Solid State Chemistry University of Nijmegen The Netherlands

Re: troublesome unit cell

2004-10-18 Thread Jacco van de Streek
se and similar crystal structures before the final release, please contact mailto:[EMAIL PROTECTED] Best wishes, -- Jacco van de Streek Research Scientist Cambridge Crystallographic Data Centre Cambridge, United Kingdom

Re: troublesome unit cell

2004-10-18 Thread Jacco van de Streek
Whitfield, Pamela wrote: The problem also occurred in a program that would take fractional coordinates, so that's not the only snag. I suggested another one: From: Jacco van de Streek - The matrices representing the space-group operators are no longer diagonal, and the distinction between R*

Re: Tables of atomic, covalent and vdW radius of elements

2005-02-17 Thread Jacco van de Streek
[EMAIL PROTECTED] wrote: can anyone of you know something about this issue? Thank you for your help. Dear Stephen, tables with values for covalent and vdW radii for organic and organometallic compounds can be found at: http://www.ccdc.cam.ac.uk/products/csd/radii/ Best wishes, -- Jacco van de

Re: negative oxygen thermal parms

2005-03-07 Thread Jacco van de Streek
h the neon atoms in it...) Best wishes, -- Jacco van de Streek Research Scientist Cambridge Crystallographic Data Centre Cambridge, United Kingdom

Re: Structure solution

2006-08-25 Thread Jacco van de Streek
k at your data (with DASH) if you'd like. Best wishes, -- Dr Jacco van de Streek Research Scientist Cambridge Crystallographic Data Centre Cambridge, United Kingdom

Calculation of Fhkl or/and Ihkl by different software

2006-11-19 Thread Jacco van de Streek
ury, Mercury 1.5, due to be released in a couple of weeks, will also able to write out structure factors, and it will also have the option to include CuKa2. Kind regards, -- Dr Jacco van de Streek Send instant messages to your online friends http://uk.messenger.yahoo.com

RE: Re: Powder Diffraction In Q-Space

2007-02-21 Thread Jacco van de Streek
t, then the rest of the argument is the same as for Example 2. This shows that it is very important to always keep track of the (rescaled) original ESDs during background subtraction etc. I hope this made some sense.

Re: Powder Diffraction In Q-Space

2007-02-25 Thread Jacco van de Streek
al structure detereminations should *also* show the powder pattern of the sample the crystal was taken from, to prove (or disprove!) phase purity. Best wishes, -- Dr Jacco van de Streek, Frankfurt University, Frankfurt am M

Re: Addsym trouble

2008-07-23 Thread Jacco van de Streek
Dear Magnus, have you tried writing Ton Spek directly? I don't think he reads this list. Best wishes, -- Dr Jacco van de Streek Scientist Avant-garde Materials Simulation Freiburg im Breisgau, Germany