(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2003). E59, o381-o383 [ doi:10.1107/S1600536803004227 ]

3,9-Dimethoxy-6a,11a-dihydro-6H-benzo[4,5]furo[3,2-c]chromene-4,10-diol monohydrate

T. Aree, S. Tip-pyang, S. Paramapojn and N. Chaichit

Online 28 February 2003

Key indicators

Single-crystal X-ray study
T = 295 K
Mean (C-C) = 0.003 Å
R factor = 0.038
wR factor = 0.095
Data-to-parameter ratio = 8.3

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           30.49                 
         From the CIF: _reflns_number_total               2412                  
         Count of symmetry unique reflns         2533                           
         Completeness (_total/calc)             95.22%                          
         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.