Acta Cryst. (2013). E69, o267-o268
[ doi:10.1107/S1600536813001244 ]

(6bS*,14R*,14aR*)-Methyl 14-(4-methylphenyl)-7-oxo-6b,6c,7,12b,14,14a-hexahydro-1H-pyrano[3,2-c:5,4-c']dichromene-14a-carboxylate

R. Ponnusamy, V. Sabari, G. Sivakumar, M. Bakthadoss and S. Aravindhan

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (C-C) = 0.003 Å
• R factor = 0.045
• wR factor = 0.133
• Data-to-parameter ratio = 14.6

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT230_ALERT_2_C Hirshfeld Test Diff for    C18    --  C19     ..        5.5 su   
PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) .....          1      

Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details  in the CIF          ?
PLAT153_ALERT_1_G The su's on the Cell Axes   are Equal ..........    0.00500 Ang. 
PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature        293 K    
PLAT200_ALERT_1_G Check the Reported   _diffrn_ambient_temperature        293 K    
PLAT793_ALERT_4_G The Model has Chirality at C10     (Verify) ....          R      
PLAT793_ALERT_4_G The Model has Chirality at C11     (Verify) ....          R      
PLAT793_ALERT_4_G The Model has Chirality at C12     (Verify) ....          R      
PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L=  0.600          9      

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

   3 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
   1 ALERT type 3 Indicator that the structure quality may be low
   4 ALERT type 4 Improvement, methodology, query or suggestion
   1 ALERT type 5 Informative message, check

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