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[Contents scheme]

Acta Cryst. (2013). E69, o831
[ doi:10.1107/S1600536813011823 ]

10-Methyl-2-oxo-4-phenyl-2,11-dihydropyrano[2,3-a]carbazole-3-carbonitrile

A. Thiruvalluvar, E. Yamuna, R. Archana, K. J. Rajendra Prasad and R. J. Butcher


Key indicators

checkCIF/PLATON results

No syntax errors found




Alert level B PLAT934_ALERT_3_B Number of (Iobs-Icalc)/SigmaW .gt. 10 Outliers . 9
Alert level C DIFMX01_ALERT_2_C The maximum difference density is > 0.1*ZMAX*0.75 _refine_diff_density_max given = 0.638 Test value = 0.600 DIFMX02_ALERT_1_C The maximum difference density is > 0.1*ZMAX*0.75 The relevant atom site should be identified. PLAT094_ALERT_2_C Ratio of Maximum / Minimum Residual Density .... 2.05 PLAT097_ALERT_2_C Large Reported Max. (Positive) Residual Density 0.64 eA-3 PLAT230_ALERT_2_C Hirshfeld Test Diff for C3 -- C31 .. 5.8 su PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 5.960 PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 2.108 PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 5
Alert level G PLAT005_ALERT_5_G No _iucr_refine_instructions_details in the CIF ? PLAT128_ALERT_4_G Alternate Setting of Space-group P21/c ....... P21/n PLAT371_ALERT_2_G Long C(sp2)-C(sp1) Bond C3 - C31 ... 1.43 Ang. PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L= 0.600 374
0 ALERT level A = Most likely a serious problem - resolve or explain 1 ALERT level B = A potentially serious problem, consider carefully 8 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 1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 5 ALERT type 2 Indicator that the structure model may be wrong or deficient 4 ALERT type 3 Indicator that the structure quality may be low 2 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check

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