Acta Cryst. (2008). E64, m1211-m1212  [ doi:10.1107/S1600536808027104 ]

Dichlorido(5,5'-dimethyl-2,2'-bipyridine-²N,N')zinc(II)

A. Khalighi, R. Ahmadi, V. Amani and H. R. Khavasi

Online 30 August 2008

Key indicators

• Single-crystal X-ray study
• T = 298 K
• Mean (C-C) = 0.013 Å
• R factor = 0.066
• wR factor = 0.150
• Data-to-parameter ratio = 23.3

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT230_ALERT_2_C Hirshfeld Test Diff for    C20    --  C21     ..       5.36 su   
PLAT341_ALERT_3_C Low Bond Precision on C-C Bonds (x 1000) Ang ...         13      
PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd.  #          1      
              C12 H12 Cl2 N2 Zn                                                
PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd.  #          2      
              C12 H12 Cl2 N2 Zn                                                

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           29.30
           From the CIF: _reflns_number_total               7167
           Count of symmetry unique reflns         3846
           Completeness (_total/calc)            186.35%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured      3321
           Fraction of Friedel pairs measured     0.863
           Are heavy atom types Z>Si present        yes
PLAT033_ALERT_4_G Flack Parameter Value Deviates from Zero .......       0.07      

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

   0 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
   1 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

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