[Open access]

[Contents scheme]

Acta Cryst. (2013). E69, o578
[ doi:10.1107/S1600536813007381 ]

5,7-Dihydroxy-2-(3-hydroxy-4,5-dimethoxyphenyl)-6-methoxy-4H-chromen-4-one

S. M. Adizov, R. F. Mukhamathanova, K. K. Turgunov, I. D. Sham'yanov and B. Tashkhodjaev


Key indicators

checkCIF/PLATON results

No syntax errors found




Alert level B PLAT915_ALERT_3_B Low Friedel Pair Coverage ...................... 21 Perc.
Alert level C PLAT089_ALERT_3_C Poor Data / Parameter Ratio (Zmax .LT. 18) ..... 7.61 PLAT250_ALERT_2_C Large U3/U1 Ratio for Average U(i,j) Tensor .... 2.2 PLAT340_ALERT_3_C Low Bond Precision on C-C Bonds ............... 0.0049 Ang PLAT726_ALERT_2_C H...A Calc 2.30000, Rep 2.32000 Dev... 0.02 Ang. H12C -O8 1.555 1.555 # 44 PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L= 0.600 6 PLAT913_ALERT_3_C Missing # of Very Strong Reflections in FCF .... 3
Alert level G PLAT005_ALERT_5_G No _iucr_refine_instructions_details in the CIF ? PLAT007_ALERT_5_G Note: Number of Unrefined D-H Atoms ............ 3 PLAT720_ALERT_4_G Number of Unusual/Non-Standard Labels .......... 2 PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L= 0.600 8
0 ALERT level A = Most likely a serious problem - resolve or explain 1 ALERT level B = A potentially serious problem, consider carefully 6 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 2 ALERT type 2 Indicator that the structure model may be wrong or deficient 5 ALERT type 3 Indicator that the structure quality may be low 2 ALERT type 4 Improvement, methodology, query or suggestion 2 ALERT type 5 Informative message, check

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