Acta Cryst. (2011). E67, o264-o265  [ doi:10.1107/S1600536810053407 ]

3-Hydroxy-2-(4-hydroxyphenyl)-4H-chromen-4-one

M. Wera, V. G. Pivovarenko and J. Blazejowski

Online 8 January 2011

Key indicators

• Single-crystal X-ray study
• T = 295 K
• Mean (C-C) = 0.005 Å
• R factor = 0.060
• wR factor = 0.155
• Data-to-parameter ratio = 11.1

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT026_ALERT_3_C Ratio Observed / Unique Reflections too Low ....         46 Perc.
PLAT340_ALERT_3_C Low Bond Precision on  C-C Bonds (x 1000) Ang ..          5      
PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) .....          5      

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   3 ALERT level C = Check and explain
   0 ALERT level G = General alerts; check

   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
   0 ALERT type 5 Informative message, check

Copyright © International Union of Crystallography
IUCr Webmaster