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Acta Cryst. (2005). E61, o2328-o2329  [ doi:10.1107/S1600536805020179 ]

3,4-Difluorobenzohydroxamic acid

X.-M. Shang, X.-G. Meng, J.-Z. Wu and Q.-S. Li

Online 6 July 2005


Key indicators

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Alert level C PLAT089_ALERT_3_C Poor Data / Parameter Ratio (Zmax .LT. 18) ..... 7.77 PLAT340_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ... 6
Alert level G REFLT03_ALERT_4_G Please check that the estimate of the number of Friedel pairs is correct. If it is not, please give the correct count in the _publ_section_exptl_refinement section of the submitted CIF. From the CIF: _diffrn_reflns_theta_max 26.04 From the CIF: _reflns_number_total 886 Count of symmetry unique reflns 885 Completeness (_total/calc) 100.11% TEST3: Check Friedels for noncentro structure Estimate of Friedel pairs measured 1 Fraction of Friedel pairs measured 0.001 Are heavy atom types Z>Si present no
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 2 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 2 ALERT type 3 Indicator that the structure quality may be low 1 ALERT type 4 Improvement, methodology, query or suggestion

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