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Acta Cryst. (2013). E69, o1166  [ doi:10.1107/S1600536813017157 ]

4,4'-Di-tert-butyl-2,2'-[imidazolidine-1,3-diylbis(methylene)]diphenol

A. Rivera, L. S. Nerio and M. Bolte


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Alert level B Crystal system given = monoclinic PLAT340_ALERT_3_B Low Bond Precision on C-C Bonds ............... 0.0101 Ang.
Alert level C RFACG01_ALERT_3_C The value of the R factor is > 0.10 R factor given 0.119 RFACR01_ALERT_3_C The value of the weighted R factor is > 0.25 Weighted R factor given 0.324 PLAT082_ALERT_2_C High R1 Value .................................. 0.12 PLAT084_ALERT_3_C High wR2 Value (i.e. > 0.25) ................... 0.32 PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C27 PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 28.868 PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 4.907 PLAT906_ALERT_3_C Large K value in the Analysis of Variance ...... 2.531 PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 1 PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L= 0.595 8 PLAT913_ALERT_3_C Missing # of Very Strong Reflections in FCF .... 1
Alert level G PLAT005_ALERT_5_G No _iucr_refine_instructions_details in the CIF ? Do ! PLAT083_ALERT_2_G SHELXL Second Parameter in WGHT Unusually Large. 10.95 PLAT870_ALERT_4_G ALERTS Related to Twinning Effects Suppressed .. ! Info PLAT909_ALERT_3_G Percentage of Observed Data at Theta(Max) still 56 % PLAT931_ALERT_5_G Check Twin Law ( 1 0 0)[ ] Estimated BASF 0.29
0 ALERT level A = Most likely a serious problem - resolve or explain 1 ALERT level B = A potentially serious problem, consider carefully 11 ALERT level C = Check. Ensure it is not caused by an omission or oversight 5 ALERT level G = General information/check it is not something unexpected 0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 3 ALERT type 2 Indicator that the structure model may be wrong or deficient 11 ALERT type 3 Indicator that the structure quality may be low 1 ALERT type 4 Improvement, methodology, query or suggestion 2 ALERT type 5 Informative message, check

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