[Open access]

[Contents scheme]

Acta Cryst. (2014). E70, o536
[ doi:10.1107/S1600536814006904 ]

6,8-Di­iodo-4-oxo-4H-chromene-3-carbalde­hyde

Y. Ishikawa


Key indicators

checkCIF/PLATON results

No syntax errors found




Alert level B PLAT971_ALERT_2_B Check Calcd Residual Density 0.90A From I2 3.17 eA-3 PLAT971_ALERT_2_B Check Calcd Residual Density 0.81A From I2 3.10 eA-3 PLAT971_ALERT_2_B Check Calcd Residual Density 0.79A From I1 3.10 eA-3 PLAT971_ALERT_2_B Check Calcd Residual Density 0.90A From I1 3.08 eA-3 PLAT972_ALERT_2_B Check Calcd Residual Density 0.87A From I1 -2.87 eA-3 PLAT972_ALERT_2_B Check Calcd Residual Density 0.92A From I1 -2.76 eA-3 PLAT972_ALERT_2_B Check Calcd Residual Density 0.91A From I2 -2.72 eA-3 PLAT972_ALERT_2_B Check Calcd Residual Density 0.95A From I2 -2.52 eA-3
Alert level C PLAT250_ALERT_2_C Large U3/U1 Ratio for Average U(i,j) Tensor .... 2.3 Note PLAT342_ALERT_3_C Low Bond Precision on C-C Bonds ............... 0.0103 Ang. PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 2.398 Check PLAT939_ALERT_3_C Large Value of Not (SHELXL) Weight Optimized S . 11.30 PLAT971_ALERT_2_C Check Calcd Residual Density 1.72A From I1 1.54 eA-3
Alert level G PLAT005_ALERT_5_G No _iucr_refine_instructions_details in the CIF Please Do ! PLAT431_ALERT_2_G Short Inter HL..A Contact I2 .. O2 .. 3.35 Ang. PLAT910_ALERT_3_G Missing # of FCF Reflections Below Th(Min) ..... 1 Why ? PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L= 0.600 3 Note
0 ALERT level A = Most likely a serious problem - resolve or explain 8 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 0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 11 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 1 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check

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