Acta Cryst. (2003). E59, o232-o233  [ doi:10.1107/S1600536803001612 ]

Reinvestigation of 5,12-dihydro-5,12-dimethylquino[2,3-b]acridine-7,4-dione

J. Mizuguchi and T. Senju

Online 31 January 2003

Key indicators

• Single-crystal X-ray study
• T = 223 K
• Mean (C-C) = 0.002 Å
• R factor = 0.044
• wR factor = 0.126
• Data-to-parameter ratio = 14.8

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level B:



CRYSS_02  Alert B The value of _exptl_crystal_size_max is > 1.0                 
 Maximum crystal size given =   1.180                                           


 0 Alert Level A = Potentially serious problem

 1 Alert Level B = Potential problem

 0 Alert Level C = Please check

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