(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2001). E57, o1175-o1176 [ doi:10.1107/S1600536801019067 ]

2H-Chromene-2-thione

P. Munshi and T. N. G. Row

Online 17 November 2001

Key indicators

Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.013 Å
R factor = 0.054
wR factor = 0.185
Data-to-parameter ratio = 8.1

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           24.97                 
         From the CIF: _reflns_number_total                815                  
         Count of symmetry unique reflns          815                           
         Completeness (_total/calc)            100.00%                          
         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          yes                         
          WARNING: Large fraction of Friedel related reflns may                 
                   be needed to determine absolute structure