(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2013). E69, o79
[ doi:10.1107/S1600536812050076 ]

1-Methoxy-11H-benzo[b]fluoren-11-one

S.-K. Fang, C.-W. Chang, H.-Y. Tsai, M.-H. Luo and K.-Y. Chen

Key indicators

Single-crystal X-ray study
T = 299 K
Mean (C-C) = 0.005 Å
R factor = 0.083
wR factor = 0.250
Data-to-parameter ratio = 14.0

checkCIF/PLATON results

No syntax errors found




Alert level B
PLAT919_ALERT_3_B Reflection # Likely Affected by the Beamstop ...          1      
PLAT934_ALERT_3_B Number of (Iobs-Icalc)/SigmaW .gt. 10 Outliers .          1      

Alert level C
PLAT340_ALERT_3_C Low Bond Precision on  C-C Bonds ...............     0.0046 Ang  
PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L=  0.600         25      
PLAT918_ALERT_3_C Reflection(s) # with I(obs) much smaller I(calc)          2      
PLAT939_ALERT_3_C Large Value of Not (SHELXL) Weight Optimized S .      39.69      

Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details  in the CIF          ?
PLAT072_ALERT_2_G SHELXL First  Parameter in WGHT Unusually Large.       0.10      
PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L=  0.600         20      

   0 ALERT level A = Most likely a serious problem - resolve or explain
   2 ALERT level B = A potentially serious problem, consider carefully
   4 ALERT level C = Check. Ensure it is not caused by an omission or oversight
   3 ALERT level G = General information/check it is not something unexpected

   0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   1 ALERT type 2 Indicator that the structure model may be wrong or deficient
   6 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