Acta Cryst. (2010). E66, o710  [ doi:10.1107/S1600536810006744 ]

8H-Chromeno[2',3':4,5]imidazo[2,1-a]isoquinoline

S. Safarov, L. G. Voskressensky, O. V. Bizhko, L. N. Kulikova and V. N. Khrustalev

Online 27 February 2010

Key indicators

• Single-crystal X-ray study
• T = 100 K
• Mean (C-C) = 0.004 Å
• R factor = 0.066
• wR factor = 0.182
• Data-to-parameter ratio = 14.4

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT230_ALERT_2_C Hirshfeld Test Diff for    C7A    --  C13A    ..       6.90 su   
PLAT230_ALERT_2_C Hirshfeld Test Diff for    C14A   --  C14B    ..       6.08 su   
PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L=  0.600         39      
PLAT480_ALERT_4_C Long H...A H-Bond Reported H8A    ..  O13     ..       2.71 Ang. 
PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L=  0.600          4      

Alert level G
PLAT960_ALERT_3_G Number of Intensities with I .LT. - 2*sig(I) ..           1      
PLAT128_ALERT_4_G Non-standard setting of Space-group P21/c   ....      P21/n      

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   5 ALERT level C = Check and explain
   2 ALERT level G = General alerts; check

   0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   2 ALERT type 2 Indicator that the structure model may be wrong or deficient
   2 ALERT type 3 Indicator that the structure quality may be low
   3 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

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