(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2002). E58, o550-o552 [ doi:10.1107/S160053680200692X ]

2,4-Lutidine

A. D. Bond and S. Parsons

Online 25 April 2002

Key indicators

Powder X-ray study
T = 150 K
Mean (C-C) = 0.002 Å
R factor = 0.055
wR factor = 0.146
Data-to-parameter ratio = 19.7

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level A:



DIFF_020  Alert A _diffrn_standards_interval_count and                          
          _diffrn_standards_interval_time are missing. Number of measurements   
          between standards or time (min) between standards.                    

DIFF_022  Alert A _diffrn_standards_decay_% is missing                          
          Percentage decrease in standards intensity.                           


 Alert Level B:



ABSTM_02  Alert B The ratio of expected to reported Tmax/Tmin(RR') is < 0.75    
          Tmin and Tmax reported:      0.653     1.000                          
          Tmin' and Tmax expected:      1.000     1.000                         
          RR' =      0.653                                                      
          Please check that your absorption correction is appropriate.          


 Alert Level C:



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           28.86                 
         From the CIF: _reflns_number_total               1540                  
         TEST2: Reflns within _diffrn_reflns_theta_max                          
         Count of symmetry unique reflns         1676                           
         Completeness (_total/calc)             91.89%                          
          Alert C: < 95% complete                                               


 2 Alert Level A = Potentially serious problem

 1 Alert Level B = Potential problem

 1 Alert Level C = Please check