More space-group changes.

  title={More space-group changes.},
  author={Richard E. Marsh and F. H. Herbstein},
  journal={Acta crystallographica. Section B, Structural science},
  volume={44 ( Pt 1)},
Revised structures are reported for 19 crystalline compounds, based on space groups of higher symmetry than originally reported. In four cases the Laue symmetry is changed, one from 1 to 2/m and three from 2/m to mmm; in the remaining fifteen a center of symmetry has been added. For eight of these latter compounds we have obtained F values and carried out least-squares refinements in the centrosymmetric space groups, with more satisfactory results than originally reported.