Acta Cryst. (2008). E64, o498  [ doi:10.1107/S1600536808001785 ]

6,10,16,19-Tetraoxatrispiro[4.2.2.4.2.2]nonadecane

J.-K. Wang, H.-B. Wang, C.-R. Wu and J.-T. Wang

Key indicators

• Single-crystal X-ray study
• T = 294 K
• Mean (C-C) = 0.005 Å
• R factor = 0.068
• wR factor = 0.174
• Data-to-parameter ratio = 16.7

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT220_ALERT_2_C Large Non-Solvent    C     Ueq(max)/Ueq(min) ...       3.20 Ratio
PLAT241_ALERT_2_C Check High      Ueq as Compared to Neighbors for         C1     
PLAT340_ALERT_3_C Low Bond Precision on C-C Bonds (x 1000) Ang ...          5      
PLAT360_ALERT_2_C Short  C(sp3)-C(sp3) Bond  C1     -   C4     ...       1.43 Ang. 
PLAT360_ALERT_2_C Short  C(sp3)-C(sp3) Bond  C2     -   C3     ...       1.41 Ang. 

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

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

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