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Acta Cryst. (2013). E69, o1296  [ doi:10.1107/S160053681301934X ]

3-[1-(2-Hydroxyanilino)ethylidene]-3H-chromen-2,4-dione

A. Brahmia, T. Ben Ayed and R. Ben Hassen


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Alert level C PLAT026_ALERT_3_C Ratio Observed / Unique Reflections too Low .... 44 % PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd. # 1 C17 H13 N O4 PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 7.934
Alert level G PLAT005_ALERT_5_G No _iucr_refine_instructions_details in the CIF ? Do ! PLAT007_ALERT_5_G Note: Number of Unrefined Donor-H Atoms ........ 1 PLAT128_ALERT_4_G Note: Alternate Setting of Space-group P21/c . P21/n PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature 293 K PLAT380_ALERT_4_G Check Incorrectly? Oriented X(sp2)-Methyl Moiety C9 PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L= 0.600 7
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 3 ALERT level C = Check. Ensure it is not caused by an omission or oversight 7 ALERT level G = General information/check it is not something unexpected 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 4 ALERT type 4 Improvement, methodology, query or suggestion 2 ALERT type 5 Informative message, check

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