Acta Cryst. (2004). E60, o1666-o1667  [ doi:10.1107/S1600536804021051 ]

4,4'-Bipyridinium bis(2-carboxybenzenesulfonate) dihydrate

X.-H. Li, Z.-G. Li and Y.-Q. Zhu

Online 4 September 2004

Key indicators

• Single-crystal X-ray study
• T = 298 K
• Mean (C-C) = 0.003 Å
• R factor = 0.047
• wR factor = 0.121
• Data-to-parameter ratio = 13.5

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ ....          ?
PLAT736_ALERT_1_C H...A   Calc     2.06(3), Rep   2.058(14) ......       2.14 su-Rat
              H6A  -O3      1.555   7.667                                       

   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

   2 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
   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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