Acta Cryst. (2011). E67, o1107  [ doi:10.1107/S1600536811010944 ]

7-Diethylamino-2-oxo-2H-chromene-3-carbohydrazide

L.-J. Zhang and B.-Z. Yin

Online 13 April 2011

Key indicators

• Single-crystal X-ray study
• T = 290 K
• Mean (C-C) = 0.002 Å
• R factor = 0.045
• wR factor = 0.117
• Data-to-parameter ratio = 16.2

checkCIF/PLATON results

No syntax errors found




Alert level B
PLAT230_ALERT_2_B Hirshfeld Test Diff for    N1     --  C13     ..       9.93 su   

Alert level C
PLAT152_ALERT_1_C The Supplied and Calc. Volume s.u. Differ by ...          2 Units
PLAT736_ALERT_1_C H...A   Calc     2.30(3), Rep   2.296(12) ......       2.50 su-Ra
              H6B  -O3      1.555   1.555                    #         76      
PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) .....          8      
PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L=  0.600         10      
PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L=  0.600         48      

Alert level G
PLAT002_ALERT_2_G Number of Distance or Angle Restraints on AtSite         10      
PLAT154_ALERT_1_G The su's on the Cell Angles are Equal  (x 10000)       3000 Deg. 
PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints .......          6      

   0 ALERT level A = Most likely a serious problem - resolve or explain
   1 ALERT level B = A potentially serious problem, consider carefully
   5 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

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

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