Dear All,

I have a problem of conflicting FEFF calculation for tris(acetate-O)arsenic [As(OCOCH3)3] (TAA) and tris(phenyl thio)arsenic [As(SC6H5)3] (TPA); respective cif and atom input files are attached. In Artemis, when I import TAA after TPA, the paths obtained for TAA from FEFF calculation are different compared to the scenario when I import and calculate the path for TAA at first. The problem is similar in both computers with Windows 7 home premium 64 bit operating system and 0.9.24 version of Demeter and Windows 7 professional 32 bit operating system and 0.9.25 version of Demeter.

I have even tried a scenario, where I discarded both FEFF objects after getting inconsistent results for TAA and then imported TAA at first without restarting Artemis and I got wrong paths again, indicating software can remember from last calculation. Any explanation for this problem will be deeply appreciated.

With regards,

Ashis

Dr. Ashis Biswas
Alexander von Humboldt Postdoctoral Fellow
Environmental Geochemistry Group
University of Bayreuth
Room: 211, Geo III
Universitätsstraße 30, 95447 Bayreuth, Germany
Ph. No.: +49 921 553991; Fax:+49 921 552334