Acta Cryst. (2009). E65, m66-m67  [ doi:10.1107/S1600536808041779 ]

Poly[(-5,7-dihydroxy-4-oxo-2-phenyl-4H-chromene-8-sulfonato)potassium(I)]

B. Liu and B.-L. Yang

Online 13 December 2008

Key indicators

• Single-crystal X-ray study
• T = 296 K
• Mean (C-C) = 0.005 Å
• R factor = 0.044
• wR factor = 0.152
• Data-to-parameter ratio = 12.0

checkCIF/PLATON results

No syntax errors found




Alert level C
            Value of measurement temperature given =   296.000
            Value of melting point given =     0.000
PLAT230_ALERT_2_C Hirshfeld Test Diff for    C6     --  C7      ..       5.27 su   
PLAT230_ALERT_2_C Hirshfeld Test Diff for    C12    --  C13     ..       5.07 su   
PLAT241_ALERT_2_C Check High      Ueq as Compared to Neighbors for         O6     
PLAT340_ALERT_3_C Low Bond Precision on C-C Bonds (x 1000) Ang ...          5      
PLAT234_ALERT_4_C Large Hirshfeld Difference C10    --  C11     ..       0.11  Ang.
PLAT234_ALERT_4_C Large Hirshfeld Difference C13    --  C14     ..       0.10  Ang.
PLAT764_ALERT_4_C Overcomplete CIF Bond List Detected (Rep/Expd) .       1.13 Ratio

Alert level G

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

   1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   3 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
   3 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

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