Acta Cryst. (2004). E60, o824-o825  [ doi:10.1107/S1600536804005926 ]

7-Chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

J. Song, F.-H. Xue and K.-X. Lou

Online 24 April 2004

Key indicators

• Single-crystal X-ray study
• T = 293 K
• R factor = 0.036
• wR factor = 0.104
• Data-to-parameter ratio = 13.8

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT431_ALERT_2_C Short Inter HL..A Contact  Cl1    ..  O1      ..       3.10 Ang.  
PLAT480_ALERT_4_C Long H...A H-Bond Reported H2     ..  CL1     ..       2.98 Ang.  

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   2 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
   1 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
   1 ALERT type 4 Improvement, methodology, query or suggestion

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