(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2008). E64, o429 [ doi:10.1107/S1600536807068699 ]

r-2,c-6-Bis(4-fluorophenyl)-t-3,t-5-dimethylpiperidin-4-one

D. Gayathri, D. Velmurugan, G. Aridoss, S. Kabilan and K. Ravikumar

Key indicators

Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.003 Å
R factor = 0.061
wR factor = 0.212
Data-to-parameter ratio = 18.3

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for        C17     
PLAT420_ALERT_2_C D-H Without Acceptor       N1     -   H1A    ...          ?      

Alert level G
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_2_G Check the Absolute Configuration of C1     .....          S      
PLAT793_ALERT_2_G Check the Absolute Configuration of C2     .....          R      
PLAT793_ALERT_2_G Check the Absolute Configuration of C4     .....          S      
PLAT793_ALERT_2_G Check the Absolute Configuration of C5     .....          R      

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

   2 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   6 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
   0 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check