(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2002). E58, m616-m618 [ doi:10.1107/S1600536802017816 ]

Disodium dihydrogen 1,2,4,5-benzenetetracarboxylate dihydrate

M.-L. Hu and S. W. Ng

Online 5 October 2002

Key indicators

Single-crystal X-ray study
T = 298 K
Mean (C-C) = 0.003 Å
R factor = 0.041
wR factor = 0.107
Data-to-parameter ratio = 11.2

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level C:



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           28.10                 
         From the CIF: _reflns_number_total               1311                  
         TEST2: Reflns within _diffrn_reflns_theta_max                          
         Count of symmetry unique reflns         1429                           
         Completeness (_total/calc)             91.74%                          
          Alert C: < 95% complete                                               

PLAT_369  Alert C Long   C(sp2)-C(sp2) Bond  C1     -   C2     =       1.53 Ang.


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 2 Alert Level C = Please check