The use of neutron resonance scattering in the structure determination of Sm(BrO<SUB>3</SUB>)<SUB>3</SUB>·9H<SUB>2</SUB>O

The structure of Sm(BrO<SUB>3</SUB>)<SUB>3</SUB>·9H<SUB>2</SUB>O has been solved by the neutron anomalous-dispersion method, with the use of data collected at two wavelengths. Five out of eight atoms in the asymmetric unit were located from the 'anomalous difference Patterson' synthesis, and the remaining three from a Fourier synthesis. The structure is centrosymmetric, and the signs of 78% of the reflections were determined correctly from the differences in the Fobs values at the two wavelengths