Acta Cryst. (2004). E60, o762-o763  [ doi:10.1107/S1600536804008177 ]

1,2,3,4,4b,4c,6,7,8,9,9b,9c-Dodecachloro-4b,4c,9b,9c-tetrahydrocyclobuta[1,2-a;3,4-a']diindene-5,10-dione

Y. Peng, S.-Y. Xie, L.-S. Long, R.-B. Huang and L.-S. Zheng

Online 17 April 2004

Key indicators

• Single-crystal X-ray study
• T = 298 K
• Mean (C-C) = 0.003 Å
• R factor = 0.032
• wR factor = 0.090
• Data-to-parameter ratio = 17.5

checkCIF/PLATON results

No syntax errors found




Alert level B
PLAT431_ALERT_2_B Short Inter HL..A Contact  Cl3    ..  O1      ..       2.90 Ang.  

Alert level C
PLAT040_ALERT_1_C No H-atoms in this Carbon Containing Compound ..          ?

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

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