Acta Cryst. (2006). E62, m3233-m3235  [ doi:10.1107/S1600536806045569 ]

A three-dimensional porous cadmium(II) coordination polymer: poly[[(pyridine-N)cadmium(II)]-₃-imidazole-4,5-dicarboxylato-⁶N,O:N',O':O',O'']

X.-F. Zhang, S. Gao, L.-H. Huo and H. Zhao

Online 8 November 2006

Key indicators

• Single-crystal X-ray study
• T = 295 K
• Mean (C-C) = 0.005 Å
• R factor = 0.015
• wR factor = 0.039
• Data-to-parameter ratio = 16.2

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical .          ?
PLAT601_ALERT_2_C Structure Contains Solvent Accessible VOIDS of .      57.00 A   3 

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           27.46
           From the CIF: _reflns_number_total               2687
           Count of symmetry unique reflns         1374
           Completeness (_total/calc)            195.56%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured      1313
           Fraction of Friedel pairs measured     0.956
           Are heavy atom types Z>Si present        yes

   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

   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
   1 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

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