Acta Cryst. (2004). E60, o1689-o1690  [ doi:10.1107/S1600536804021555 ]

5,5-Dihydroxybarbituric acid monohydrate (alloxan dihydrate)

T. C. Lewis and D. A. Tocher

Online 11 September 2004

Key indicators

• Single-crystal X-ray study
• T = 150 K
• Mean (C-C) = 0.003 Å
• R factor = 0.043
• wR factor = 0.102
• Data-to-parameter ratio = 11.5

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical .          ?
PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given .......          ?
PLAT432_ALERT_2_C Short Inter X...Y Contact  O2     ..  C2      ..       2.92 Ang.  
PLAT432_ALERT_2_C Short Inter X...Y Contact  O8     ..  C4      ..       2.98 Ang.  
PLAT432_ALERT_2_C Short Inter X...Y Contact  C2     ..  C2      ..       3.18 Ang.  

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   5 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
   3 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
   1 ALERT type 4 Improvement, methodology, query or suggestion

Copyright © International Union of Crystallography
IUCr Webmaster