Acta Cryst. (2009). E65, o2228  [ doi:10.1107/S1600536809032747 ]

9-Ethoxy-1,5,13-trimethyl-8,10-dioxatetracyclo[7.7.1.0^2,7.0^11,16]heptadeca-2,4,6,11,13,15-hexaene

E. M. Nowakowska-Bogdan, E. Wicher, K. Ejsmont and J. Zaleski

Online 22 August 2009

Key indicators

• Single-crystal X-ray study
• T = 90 K
• Mean (C-C) = 0.003 Å
• R factor = 0.047
• wR factor = 0.126
• Data-to-parameter ratio = 11.8

checkCIF/PLATON results

No syntax errors found




Alert level G
PLAT333_ALERT_2_G Check Large Av C6-Ring C-C Dist. C3     -C7A           1.41 Ang. 
PLAT063_ALERT_4_G Crystal Size Likely too Large for Beam Size ....       0.25 mm   
PLAT720_ALERT_4_G Number of Unusual/Non-Standard Labels ..........          5      

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

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

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