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Acta Cryst. (2011). E67, o1876-o1877  [ doi:10.1107/S160053681102527X ]

9-(4-Hydroxyphenyl)-3,3,6,6-tetramethyl-4,5,6,9-tetrahydro-3H-xanthene-1,8(2H,7H)-dione

H.-K. Fun, W.-S. Loh, K. Rajesh, V. Vijayakumar and S. Sarveswari

Online 2 July 2011


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Alert level C PLAT094_ALERT_2_C Ratio of Maximum / Minimum Residual Density .... 2.85 PLAT142_ALERT_4_C su on b - Axis Small or Missing ................ 0.00010 Ang. PLAT143_ALERT_4_C su on c - Axis Small or Missing ................ 0.00010 Ang. PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L= 0.600 4 PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L= 0.600 123
Alert level G PLAT153_ALERT_1_G The su's on the Cell Axes are Equal .......... 0.00010 Ang. PLAT154_ALERT_1_G The su's on the Cell Angles are Equal .......... 0.00100 Deg. PLAT720_ALERT_4_G Number of Unusual/Non-Standard Labels .......... 1 PLAT793_ALERT_4_G The Model has Chirality at C7 (Verify) .... S
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 5 ALERT level C = Check. Ensure it is not caused by an omission or oversight 4 ALERT level G = General information/check it is not something unexpected 2 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 1 ALERT type 2 Indicator that the structure model may be wrong or deficient 1 ALERT type 3 Indicator that the structure quality may be low 5 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check

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