Acta Cryst. (2006). E62, o1105-o1106  [ doi:10.1107/S1600536806005733 ]

9,9-Bis(ethoxycarbonylethyl)-9H-fluorene

W.-B. Hu, H.-X. Liu, D.-T. Tian, C.-M. Liu and Z.-L. Liu

Online 22 February 2006

Key indicators

• Single-crystal X-ray study
• T = 292 K
• Mean (C-C) = 0.003 Å
• R factor = 0.060
• wR factor = 0.172
• Data-to-parameter ratio = 16.3

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT220_ALERT_2_C Large Non-Solvent    C     Ueq(max)/Ueq(min) ...       2.70 Ratio 
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for        C16     
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for        C21     
PLAT360_ALERT_2_C Short  C(sp3)-C(sp3) Bond  C22    -   C23    ...       1.43 Ang.  

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   4 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
   4 ALERT type 2 Indicator that the structure model may be wrong or deficient
   0 ALERT type 3 Indicator that the structure quality may be low
   0 ALERT type 4 Improvement, methodology, query or suggestion

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