Acta Cryst. (2008). E64, o1945  [ doi:10.1107/S1600536808028997 ]

1,1'-Binaphthyl-2,2'-dicarboxylic acid-urea (1/1)

L. Izotova, J. Ashurov, S. Talipov, B. Ibragimov and E. Weber

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (C-C) = 0.003 Å
• R factor = 0.044
• wR factor = 0.117
• Data-to-parameter ratio = 11.5

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for        C22     
PLAT420_ALERT_2_C D-H Without Acceptor       N2     -   H4N    ...          ?      
PLAT244_ALERT_4_C Low   'Solvent' Ueq as Compared to Neighbors for        C23     

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    

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

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

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