Acta Cryst. (2006). E62, o4942-o4943  [ doi:10.1107/S1600536806040712 ]

4,4'-(Ethene-1,2-diyl)dipyridinium dinitrate

G.-B. Yan

Online 13 October 2006

Key indicators

• Single-crystal X-ray study
• T = 273 K
• Mean (C-C) = 0.002 Å
• R factor = 0.040
• wR factor = 0.118
• Data-to-parameter ratio = 12.0

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         N3     

   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
   0 ALERT type 5 Informative message, check

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