Acta Cryst. (2004). E60, o747-o749  [ doi:10.1107/S1600536804007597 ]

Co-existence of water-mediated and normal base pairs in a supramolecular ribbon in 2-amino-4,6-dimethylpyrimidinium bromide 2-amino-4,6-dimethylpyrimidine monohydrate

P. Panneerselvam, P. T. Muthiah and S. Francis

Online 9 April 2004

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (C-C) = 0.007 Å
• R factor = 0.045
• wR factor = 0.136
• Data-to-parameter ratio = 15.2

checkCIF/PLATON results

No syntax errors found



Alert level A
PLAT052_ALERT_1_A (Proper) Absorption Correction Method Missing ..          ?

Alert level B
PLAT027_ALERT_3_B _diffrn_reflns_theta_full (too) Low ............      24.98 Deg.  
PLAT057_ALERT_3_B Correction for Absorption Required   RT(exp) ...       1.24       

Alert level C
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ ....          ?
PLAT341_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ...          7       

   1 ALERT level A = In general: serious problem
   2 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
   3 ALERT type 3 Indicator that the structure quality may be low
   0 ALERT type 4 Improvement, methodology, query or suggestion

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