Acta Cryst. (2008). E64, o467  [ doi:10.1107/S1600536808000913 ]

1,1'-(Butane-1,4-diyl)dipyridinium dibromide dihydrate

M.-Q. Wu, X. Xiao, Y.-Q. Zhang, S.-F. Xue and Q.-J. Zhu

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (C-C) = 0.004 Å
• R factor = 0.030
• wR factor = 0.074
• Data-to-parameter ratio = 18.7

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ ....          ?
PLAT720_ALERT_4_C Number of Unusual/Non-Standard Label(s) ........          2      

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    
PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints .......          3      

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

   3 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
   1 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

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