Acta Cryst. (2004). E60, o490-o491  [ doi:10.1107/S1600536804004428 ]

10,10-Bis(trimethylsilylethynyl)-9-methylenefluorene

P. G. Jones, H. Berger, P. Bubenitschek and H. Hopf

Online 6 March 2004

Key indicators

• Single-crystal X-ray study
• T = 203 K
• Mean (C-C) = 0.005 Å
• R factor = 0.060
• wR factor = 0.137
• Data-to-parameter ratio = 16.2

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given .......          ?
PLAT220_ALERT_2_C Large Non-Solvent    C     Ueq(max)/Ueq(min) ...       2.97 Ratio 
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors ....         Si     
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors ....        Si'     
PLAT340_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ...          5       
PLAT371_ALERT_2_C Long   C(sp2)-C(sp1) Bond  C10    -   C11    ...       1.45 Ang.  
PLAT371_ALERT_2_C Long   C(sp2)-C(sp1) Bond  C10    -   C11'   ...       1.44 Ang.  

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   7 ALERT level C = Check and explain
   0 ALERT level G = General alerts; check

   0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   5 ALERT type 2 Indicator that the structure model may be wrong or deficient
   1 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion

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