Acta Cryst. (2005). E61, o1308-o1309  [ doi:10.1107/S1600536805010378 ]

2,3-Epoxy-13c-methoxy-1,13c-dihydrodibenzo[a,kl]xanthan-1-one

Z.-P. Chen, D.-M. Tan, C.-Y. Su and Z.-L. Xu

Online 16 April 2005

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (C-C) = 0.002 Å
• R factor = 0.044
• wR factor = 0.137
• Data-to-parameter ratio = 16.4

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT199_ALERT_1_C Check the Reported _cell_measurement_temperature        293 K     

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

   1 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
   0 ALERT type 3 Indicator that the structure quality may be low
   0 ALERT type 4 Improvement, methodology, query or suggestion

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