(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2006). E62, o396-o397 [ doi:10.1107/S1600536805042637 ]

(Z)-2-(4-Methoxybenzylidene)-1-azabicyclo[2.2.2]octan-3-one

V. N. Sonar, S. Parkin and P. A. Crooks

Online 7 January 2006

Key indicators

Single-crystal X-ray study
T = 90 K
Mean (C-C) = 0.003 Å
R factor = 0.034
wR factor = 0.077
Data-to-parameter ratio = 10.1

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical .          ?

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           27.49
           From the CIF: _reflns_number_total               1664
           Count of symmetry unique reflns         1665
           Completeness (_total/calc)             99.94%
           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
   1 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
   0 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion