(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2003). E59, o363-o365 [ doi:10.1107/S1600536803003684 ]

2-(5,7-Dihydroxy-4-oxo-4H-chromen-3-yl)-5-methoxy-1,4-benzoquinone (isoflavonequinone)

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

Online 28 February 2003

Key indicators

Single-crystal X-ray study
T = 295 K
Mean (C-C) = 0.002 Å
R factor = 0.043
wR factor = 0.125
Data-to-parameter ratio = 15.2

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level C:



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           30.50                 
         From the CIF: _reflns_number_total               3781                  
         TEST2: Reflns within _diffrn_reflns_theta_max                          
         Count of symmetry unique reflns         4011                           
         Completeness (_total/calc)             94.27%                          
          Alert C: < 95% complete                                               


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 1 Alert Level C = Please check