Acta Cryst. (2009). E65, o394-o395  [ doi:10.1107/S1600536809002839 ]

3-(2,6-Dioxopiperidin-3-yl)-3-azabicyclo[3.2.0]heptane-2,4-dione

Y. M. Hijji, E. Benjamin, E. Benjamin, R. J. Butcher and J. P. Jasinski

Online 28 January 2009

Key indicators

• Single-crystal X-ray study
• T = 200 K
• Mean (C-C) = 0.002 Å
• R factor = 0.039
• wR factor = 0.108
• Data-to-parameter ratio = 22.7

checkCIF/PLATON results

No syntax errors found




Alert level C
            Value of measurement temperature given =   200.000
            Value of melting point given =     0.000
PLAT128_ALERT_4_C Non-standard setting of Space-group P21/c   ....      P21/a      

Alert level G
PLAT793_ALERT_4_G The Model has Chirality at C2      (Verify) ....          S      
PLAT793_ALERT_4_G The Model has Chirality at C5      (Verify) ....          R      
PLAT793_ALERT_4_G The Model has Chirality at C7      (Verify) ....          R      

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

   0 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
   0 ALERT type 3 Indicator that the structure quality may be low
   4 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

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