(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2005). E61, o2467-o2469 [ doi:10.1107/S1600536805021525 ]

Diethyl 4,8-dioxo-2,6-diphenyl-1,3,5,7-tetrahydro-2,3a,4a,6,7a,8a-hexaazacyclopenta[def]fluorene-8b,8c-dicarboxylate

G.-D. Yin, Y.-F. Chen, B.-H. Zhou and A.-X. Wu

Online 9 July 2005

Key indicators

Single-crystal X-ray study
T = 292 K
Mean (C-C) = 0.005 Å
Disorder in main residue
R factor = 0.057
wR factor = 0.181
Data-to-parameter ratio = 12.7

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical .          ?
PLAT220_ALERT_2_C Large Non-Solvent    C     Ueq(max)/Ueq(min) ...       3.43 Ratio 
PLAT222_ALERT_3_C Large Non-Solvent    H     Ueq(max)/Ueq(min) ...       3.47 Ratio 
PLAT241_ALERT_2_C Check High      Ueq as Compared to Neighbors for         O6     
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for        C17     
PLAT301_ALERT_3_C Main Residue  Disorder .........................       5.00 Perc. 
PLAT340_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ...          5       

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   7 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
   3 ALERT type 2 Indicator that the structure model may be wrong or deficient
   3 ALERT type 3 Indicator that the structure quality may be low
   0 ALERT type 4 Improvement, methodology, query or suggestion