Acta Cryst. (2011). E67, o2159  [ doi:10.1107/S160053681102959X ]

4,4,5,5-Tetramethyl-1,3,2⁵-dioxaphospholan-2-one

A. Skarzynska, A. M. Trzeciak and A. Gniewek

Online 30 July 2011

Key indicators

• Single-crystal X-ray study
• T = 100 K
• Mean (C-C) = 0.002 Å
• R factor = 0.035
• wR factor = 0.096
• Data-to-parameter ratio = 13.1

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT480_ALERT_4_C Long H...A H-Bond Reported H113   ..  O       ..       2.70 Ang. 
PLAT480_ALERT_4_C Long H...A H-Bond Reported H213   ..  O       ..       2.68 Ang. 
PLAT480_ALERT_4_C Long H...A H-Bond Reported H222   ..  O1      ..       2.64 Ang. 
PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) .....          2      

Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details in CIF ....          ?

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

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

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