A web-based library of XAFS data on model compounds

An archive of XAFS data collected on standard model compounds of transition metals has been constructed and made available by the world wide web. The data in this library have all been taken in transmission on powder samples free of thickness effects. Data are stored in individual files in a standar dized ASCII column format. Fields describing the contents of files can be s earched easily. The data are intended to provide standards for comparison o f EXAFS analysis procedures, for empirical analysis of XANES features, and to test theoretical XANES calculations. Emphasis has been placed on inorgan ic transition metal compounds to assist the analysis of environmentally rel evant samples.