(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2002). E58, o132-o133 [ doi:10.1107/S1600536802000399 ]

4-Phenyl-1-(2,4,5-tricyanophenyl)-1,2,3,4-tetrahydronaphthalene

M. Zhang, A. Usman, I. A. Razak, H.-K. Fun, S. Chantrapromma and J.-H. Xu

Online 11 January 2002

Key indicators

Single-crystal X-ray study
T = 183 K
Mean (C-C) = 0.004 Å
R factor = 0.047
wR factor = 0.104
Data-to-parameter ratio = 9.6

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level C:



PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(13)  -   C(25)  =       1.44 Ang.

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(14)  -   C(24)  =       1.45 Ang.

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(16)  -   C(23)  =       1.45 Ang.

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           28.27                 
         From the CIF: _reflns_number_total               2435                  
         Count of symmetry unique reflns         2481                           
         Completeness (_total/calc)             98.15%                          
         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.          


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 3 Alert Level C = Please check