Acta Cryst. (2003). E59, o742-o744  [ doi:10.1107/S1600536803009164 ]

Pyridinium oxalate(1-) oxalic acid dihydrate

K. Rajagopal, V. Tamilselvi, R. V. Krishnakumar and S. Natarajan

Online 9 May 2003

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (C-C) = 0.003 Å
• R factor = 0.037
• wR factor = 0.113
• Data-to-parameter ratio = 11.4

checkCIF results

No syntax errors found



ADDSYM reports no extra symmetry


 Alert Level C:



PLAT_369  Alert C Long   C(sp2)-C(sp2) Bond  C(7)   -   C(8)   =       1.54 Ang.

PLAT_369  Alert C Long   C(sp2)-C(sp2) Bond  C(9)   -   C(10)  =       1.54 Ang.


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 2 Alert Level C = Please check

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