Acta Cryst. (2001). E57, o964-o965  [ doi:10.1107/S1600536801015203 ]

Monoclinic form of 2-{5,5-dimethyl-3-[2-(2,4,6-trimethoxyphenyl)vinyl]cyclohex-2-enylidene}malononitrile

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

Online 29 September 2001

Key indicators

• Single-crystal X-ray study
• T = 291 K
• Mean (C-C) = 0.003 Å
• R factor = 0.054
• wR factor = 0.136
• Data-to-parameter ratio = 14.7

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 =     0.081                                    
          Value of mu given      =     0.080                                    

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(7)   -   C(8)   =       1.42 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

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