(IUCr) Crystallography Journals Online checkcif report

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Acta Cryst. (2004). E60, o2371-o2373 [ doi:10.1107/S1600536804029289 ]

2-Amino-7-methyl-4-(3,4-methylenedioxyphenyl)-5-oxopyrano[3,2-c]pyran-3-carbonitrile N,N-dimethylformamide solvate

D.-Q. Shi, L.-H. Niu, X.-S. Wang, Q.-Y. Zhuang and Y. Zhang

Key indicators

Single-crystal X-ray study
T = 193 K
Mean (C-C) = 0.002 Å
R factor = 0.039
wR factor = 0.102
Data-to-parameter ratio = 12.4

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT152_ALERT_1_C Supplied and Calc Volume s.u. Inconsistent .....          ?
PLAT230_ALERT_2_C Hirshfeld Test Diff for    C2     -   C9      ..       6.86 su    
PLAT710_ALERT_4_C Delete 1-2-3 or 2-3-4 Linear Torsion Angle ... #         33     
            C1  -C2  -C9  -N2   -162.90  1.90   1.555   1.555   1.555   1.555   
PLAT710_ALERT_4_C Delete 1-2-3 or 2-3-4 Linear Torsion Angle ... #         34     
            C3  -C2  -C9  -N2     19.00  2.00   1.555   1.555   1.555   1.555   

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