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Acta Cryst. (2005). E61, o2366-o2367  [ doi:10.1107/S1600536805020490 ]

3,6-Dibromo-9-ethyl-9H-carbazole

P.-M. Huang, J.-S. Li, X.-M. Duan, T. Zeng and X.-L. Yan

Online 6 July 2005


Key indicators

checkCIF/PLATON results

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Alert level C PLAT341_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ... 9
Alert level G REFLT03_ALERT_4_G WARNING: Large fraction of Friedel related reflns may be needed to determine absolute structure From the CIF: _diffrn_reflns_theta_max 26.30 From the CIF: _reflns_number_total 1804 Count of symmetry unique reflns 1364 Completeness (_total/calc) 132.26% TEST3: Check Friedels for noncentro structure Estimate of Friedel pairs measured 440 Fraction of Friedel pairs measured 0.323 Are heavy atom types Z>Si present yes
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 1 ALERT level C = Check and explain 1 ALERT level G = General alerts; check 0 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 1 ALERT type 3 Indicator that the structure quality may be low 1 ALERT type 4 Improvement, methodology, query or suggestion

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