Acta Cryst. (2010). E66, o634  [ doi:10.1107/S1600536810005040 ]

(E)-3-[2,5-Dioxo-3-(propan-2-ylidene)pyrrolidin-1-yl]acrylic acid

F. Miao, B.-F. Qin, L.-Z. Yang, X.-J. Yang and L. Zhou

Online 13 February 2010

Key indicators

• Single-crystal X-ray study
• T = 296 K
• Mean (C-C) = 0.003 Å
• R factor = 0.047
• wR factor = 0.125
• Data-to-parameter ratio = 13.3

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) .....          1      
PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L=  0.600          8      
PLAT195_ALERT_1_C Missing _cell_measurement_theta_max   datum ....          ?
PLAT196_ALERT_1_C Missing _cell_measurement_theta_min   datum ....          ?

   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

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

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