Acta Cryst. (2005). E61, o964-o966  [ doi:10.1107/S1600536805006999 ]

4,4'-Bipyridinium dipicrate

L.-F. Ma, B.-T. Zhao and L.-Y. Wang

Online 18 March 2005

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (C-C) = 0.003 Å
• R factor = 0.035
• wR factor = 0.098
• Data-to-parameter ratio = 10.6

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ ....          ?
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for         N4     

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

   1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   1 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

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