(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2009). E65, o262 [ doi:10.1107/S1600536808044073 ]

2-Hydroxy-N'-[(E)-(3-hydroxy-2-naphthyl)methylene]benzohydrazide

Y. Sun, H.-G. Li, X. Wang, S. Fu and D. Wang

Online 8 January 2009

Key indicators

Single-crystal X-ray study
T = 298 K
Mean (C-C) = 0.007 Å
R factor = 0.040
wR factor = 0.076
Data-to-parameter ratio = 6.8

checkCIF/PLATON results

No syntax errors found




Alert level C
            Value of measurement temperature given =   298.000
            Value of melting point given =     0.000
PLAT089_ALERT_3_C Poor Data / Parameter Ratio (Zmax .LT. 18) .....       6.80      
PLAT340_ALERT_3_C Low Bond Precision on C-C Bonds (x 1000) Ang ...          7      
PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical .          ?
PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given .......          ?
PLAT234_ALERT_4_C Large Hirshfeld Difference O1     --  C1      ..       0.10  Ang.
PLAT234_ALERT_4_C Large Hirshfeld Difference O2     --  C3      ..       0.10  Ang.

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           25.01
           From the CIF: _reflns_number_total               1422
           Count of symmetry unique reflns         1427
           Completeness (_total/calc)             99.65%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured         0
           Fraction of Friedel pairs measured     0.000
           Are heavy atom types Z>Si present         no

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   6 ALERT level C = Check and explain
   1 ALERT level G = General alerts; check

   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
   2 ALERT type 3 Indicator that the structure quality may be low
   4 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check