(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2001). E57, o1166-o1167 [ doi:10.1107/S1600536801018700 ]

2-{5,5-Dimethyl-3-[2-(2-methoxyphenyl)vinyl]cyclohex-2-enylidene}malononitrile

T. Kolev, Z. Glavcheva, M. Schürmann, D.-C. Kleb, H. Preut and P. Bleckmann

Key indicators

Single-crystal X-ray study
T = 291 K
Mean (C-C) = 0.002 Å
R factor = 0.049
wR factor = 0.125
Data-to-parameter ratio = 18.3

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level C:



ABSMU_01  Alert C The ratio of given/expected absorption coefficient lies       
          outside the range 0.99 <> 1.01                                        
          Calculated value of mu =     0.073                                    
          Value of mu given      =     0.070                                    

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(7)   -   C(8)   =       1.43 Ang.

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(7)   -   C(9)   =       1.43 Ang.


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 3 Alert Level C = Please check