(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2002). E58, m583-m585 [ doi:10.1107/S1600536802017154 ]

Nicotinium tetrachlorocuprate(II)

S.-N. Choi, Y.-M. Lee, H.-W. Lee, S. K. Kang and Y.-I. Kim

Online 27 September 2002

Key indicators

Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.011 Å
R factor = 0.038
wR factor = 0.099
Data-to-parameter ratio = 14.8

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry

General Notes



ABSTM_02  When printed, the submitted absorption T values will be replaced      
          by the scaled T values. Since the ratio of scaled T's is              
          identical to the ratio of reported T values, the scaling does         
          not imply a change to the absorption corrections used in the          
          study.                                                                
          Ratio of Tmax expected/reported      0.586                            
          Tmax scaled      0.579 Tmin scaled      0.388                         

REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           27.50                 
         From the CIF: _reflns_number_total               4302                  
         Count of symmetry unique reflns         3521                           
         Completeness (_total/calc)            122.18%                          
         TEST3: Check Friedels for noncentro structure                          
         Estimate of Friedel pairs measured       781                           
         Fraction of Friedel pairs measured     0.222                           
         Are heavy atom types Z>Si present          yes                         
          WARNING: Large fraction of Friedel related reflns may                 
                   be needed to determine absolute structure