Acta Cryst. (2002). E58, o266-o267  [ doi:10.1107/S1600536802002490 ]

3-(Dicyanomethylene)-1,5-diphenylpenta-1,4-diyne

P. G. Jones, H. Hopf and M. Kreutzer

Online 22 February 2002

Key indicators

• Single-crystal X-ray study
• T = 178 K
• Mean (C-C) = 0.003 Å
• R factor = 0.047
• wR factor = 0.138
• Data-to-parameter ratio = 13.7

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(1)   -   C(9)   =       1.43 Ang.

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(2)   -   C(3)   =       1.42 Ang.

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(3)   -   C(4)   =       1.42 Ang.

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(5)   -   C(15)  =       1.43 Ang.

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(6)   -   C(7)   =       1.43 Ang.

PLAT_371  Alert C Long   C(sp2)-C(sp1) Bond  C(6)   -   C(8)   =       1.42 Ang.


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 6 Alert Level C = Please check

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