5.54 for a 13 atom cuboctahedron (same in truncated octahedron and an hcp cluster) and 6.46 for a 13 atom icosahedron. A. -----Original Message----- From: ifeffit-bounces@millenia.cars.aps.anl.gov [mailto:ifeffit-bounces@millenia.cars.aps.anl.gov]On Behalf Of Juan Antonio Macia Agullo Sent: Tuesday, December 12, 2006 1:15 PM To: XAFS Analysis using Ifeffit Subject: Re: [Ifeffit] CN and bond distances in Artemis Hi Anatoly, Sorry very much Anatoly, you are right, I only told you low values for S02 but I did not give any value to you. Which is the minimum reasonable coordiantion number in a fcc structure? Yes, I assumed a fixed value of 12 for N and I left S02 as variable. I realize that my fault was to want to obtain both S02 and N in the same fit, and it seems that I have to do two fits, changing the variable (S02 or N), to obtain both variables. Thank you very much Best regards, JA