I - Introduction
II - Data from ZEFSA-II
The P2D2 (Predicted Powder Diffraction Database) contains the powder diffraction patterns calculated from these structure candidates, allowing for search-matching.
The PCOD  (virtual compounds), a subset of COD  (real compounds), contains CIFs of inorganic structure candidates from mainly two sources (computer programs) : ZEFSA-II and GRINSP.
 A. Le Bail (2005). “Inorganic structure prediction with GRINSP,”
Appl. Crystallogr. 38, 389–395.
 S. Gražulis, D. Chateigner, R.T. Downs, A.F.T. Yokochi, M. Quirós, L. Lutterotti, E. Manakova, J. Butkus, P. Moeck and A. Le Bail (2009). "Crystallography Open Database – an open access collection of crystal structures," J. Appl. Crystallogr. 42, 726-729.