Acta Cryst. (2012). E68, o1217  [ doi:10.1107/S1600536812012779 ]

3,4-Dimethylpyrano[2,3-c]pyrazol-6(2H)-one

B. Shahid, M. Zia-ur-Rehman, M. Nadeem Arshad, R. Nazir and E. Sahin

Online 28 March 2012

Key indicators

• Single-crystal X-ray study
• T = 296 K
• Mean (C-C) = 0.002 Å
• R factor = 0.041
• wR factor = 0.117
• Data-to-parameter ratio = 16.5

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L=  0.600          7      

Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details in CIF ....          ?
PLAT128_ALERT_4_G Alternate Setting of Space-group P21/c   .......      P21/n      
PLAT380_ALERT_4_G Check Incorrectly? Oriented X(sp2)-Methyl Moiety        C16     

   0 ALERT level A = Most likely a serious problem - resolve or explain
   0 ALERT level B = A potentially serious problem, consider carefully
   1 ALERT level C = Check. Ensure it is not caused by an omission or oversight
   3 ALERT level G = General information/check it is not something unexpected

   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
   3 ALERT type 4 Improvement, methodology, query or suggestion
   1 ALERT type 5 Informative message, check

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