(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2013). E69, o224
[ doi:10.1107/S1600536813000500 ]

Dimethyl 2-[(acridin-9-yl)methylidene]malonate

S. M. V. de Almeida, I. R. Pitta, M. do C. A. de Lima, F. J. B. Mendonça Junior and C. A. de Simone

Key indicators

Single-crystal X-ray study
T = 295 K
Mean (C-C) = 0.002 Å
R factor = 0.052
wR factor = 0.148
Data-to-parameter ratio = 16.6

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT029_ALERT_3_C _diffrn_measured_fraction_theta_full Low .......      0.972      
PLAT155_ALERT_4_C The Triclinic Unitcell is NOT Reduced ..........          ?
PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) .....          1      
PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L=  0.600          9      
PLAT913_ALERT_3_C Missing # of Very Strong Reflections in FCF ....          8      

Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details  in the CIF          ?
PLAT154_ALERT_1_G The su's on the Cell Angles are Equal ..........    0.00200 Deg. 
PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L=  0.600         93      

   0 ALERT level A = Most likely a serious problem - resolve or explain
   0 ALERT level B = A potentially serious problem, consider carefully
   5 ALERT level C = Check. Ensure it is not caused by an omission or oversight
   3 ALERT level G = General information/check it is not something unexpected

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