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Acta Cryst. (2012). E68, m17  [ doi:10.1107/S1600536811051828 ]

2-Bromo-1,3-diisopropyl-4,5-dimethyl-1H-imidazol-3-ium dicyanidoargentate

E. Mallah, K. Sweidan, Q. Abu-Salem, W. Abu Dayyih and M. Steimann

Online 7 December 2011


Key indicators

checkCIF/PLATON results

No syntax errors found




Alert level B PLAT431_ALERT_2_B Short Inter HL..A Contact Br1 .. N12 .. 2.96 Ang.
Alert level C STRVA01_ALERT_4_C Flack test results are ambiguous. From the CIF: _refine_ls_abs_structure_Flack 0.474 From the CIF: _refine_ls_abs_structure_Flack_su 0.017 PLAT033_ALERT_4_C Flack x Parameter Value Deviates from Zero ..... 0.474 PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C51 PLAT342_ALERT_3_C Low Bond Precision on C-C Bonds ............... 0.0116 Ang PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 3 PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L= 0.600 2
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 26.37 From the CIF: _reflns_number_total 3475 Count of symmetry unique reflns 2028 Completeness (_total/calc) 171.35% TEST3: Check Friedels for noncentro structure Estimate of Friedel pairs measured 1447 Fraction of Friedel pairs measured 0.714 Are heavy atom types Z>Si present yes PLAT005_ALERT_5_G No _iucr_refine_instructions_details in CIF .... ? PLAT710_ALERT_4_G Delete 1-2-3 or 2-3-4 Linear Torsion Angle ... # 21 C12 -AG1 -C11 -N11 10.00 0.00 1.555 1.555 1.555 1.555 PLAT710_ALERT_4_G Delete 1-2-3 or 2-3-4 Linear Torsion Angle ... # 22 C11 -AG1 -C12 -N12 -5.00 30.00 1.555 1.555 1.555 1.555
0 ALERT level A = Most likely a serious problem - resolve or explain 1 ALERT level B = A potentially serious problem, consider carefully 6 ALERT level C = Check. Ensure it is not caused by an omission or oversight 4 ALERT level G = General information/check it is not something unexpected 0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 2 ALERT type 2 Indicator that the structure model may be wrong or deficient 3 ALERT type 3 Indicator that the structure quality may be low 5 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check

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