Acta Cryst. (2003). E59, o1501-o1502  [ doi:10.1107/S1600536803019834 ]

Ethyl 2-amino-4-(4-fluorophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-benzo[b]pyran-3-carboxylate

D. Shi, S. Zhang, X. Wang and Q. Zhuang

Key indicators

• Single-crystal X-ray study
• T = 296 K
• Mean (C-C) = 0.003 Å
• R factor = 0.040
• wR factor = 0.114
• Data-to-parameter ratio = 13.4

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given .......          ?
PLAT230_ALERT_2_C Hirshfeld Test Diff for    C11    -   C12      =       6.44 su    
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors ....        C11     

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   3 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
   2 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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