Acta Cryst. (2008). E64, o677  [ doi:10.1107/S1600536808002973 ]

N^2',N^5'-Diisopropylidenepyrazine-2,5-dicarbohydrazide dihydrate

M. Ding, W.-S. Wu and H.-P. Li

Online 7 March 2008

Key indicators

• Single-crystal X-ray study
• T = 296 K
• Mean (C-C) = 0.004 Å
• R factor = 0.066
• wR factor = 0.209
• Data-to-parameter ratio = 16.3

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT026_ALERT_3_C Ratio Observed / Unique Reflections too Low ....         42 Perc.
PLAT250_ALERT_2_C Large U3/U1 Ratio for Average U(i,j) Tensor ....       2.22      
PLAT414_ALERT_2_C Short Intra D-H..H-X       H3A    ..  H8C     ..       1.90 Ang. 
PLAT414_ALERT_2_C Short Intra D-H..H-X       H5A    ..  H11B    ..       1.91 Ang. 
PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd.  #          2      
              H2 O                                                             

   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

   0 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
   1 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

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