(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2003). E59, o299-o301 [ doi:10.1107/S1600536803002721 ]

16,17-Epoxy-20-oxopregn-5-ene-3,21-diyl diacetate

L. C. R. Andrade, J. A. Paixao, M. J. M. de Almeida, R. M. L. M. Martins, H. I. M. Soares, M. J. S. M. Moreno, M. L. Sá e Melo and A. S. Campos Neves

Online 14 February 2003

Key indicators

Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.005 Å
R factor = 0.050
wR factor = 0.154
Data-to-parameter ratio = 9.2

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           72.59                 
         From the CIF: _reflns_number_total               2624                  
         Count of symmetry unique reflns         2709                           
         Completeness (_total/calc)             96.86%                          
         TEST3: Check Friedels for noncentro structure                          
         Estimate of Friedel pairs measured         0                           
         Fraction of Friedel pairs measured     0.000                           
         Are heavy atom types Z>Si present           no                         
          Please check that the estimate of the number of Friedel pairs is      
          correct. If it is not, please give the correct count in the           
          _publ_section_exptl_refinement section of the submitted CIF.