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Acta Cryst. (2013). E69, o1361  [ doi:10.1107/S1600536813019296 ]

2,4-Dibromo-1,3-dihydroxy-9H-xanthen-9-one

S.-W. Huang, Z.-M. Yang, F.-P. Huang and J.-K. Qin


Key indicators

checkCIF/PLATON results

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Alert level C PLAT089_ALERT_3_C Poor Data / Parameter Ratio (Zmax < 18) ..... 7.20 PLAT341_ALERT_3_C Low Bond Precision on C-C Bonds ............... 0.0078 Ang.
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 ........ 2 PLAT909_ALERT_3_G Percentage of Observed Data at Theta(Max) still 67 %
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 2 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 3 ALERT type 3 Indicator that the structure quality may be low 0 ALERT type 4 Improvement, methodology, query or suggestion 2 ALERT type 5 Informative message, check

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