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Acta Cryst. (2012). E68, o134-o135  [ doi:10.1107/S1600536811052998 ]

1H-Imidazol-3-ium-4-carboxylate

Q. Cao, B.-R. Duan, B. Zhu and Z. Cao

Online 17 December 2011


Key indicators

checkCIF/PLATON results

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Alert level C PLAT089_ALERT_3_C Poor Data / Parameter Ratio (Zmax .LT. 18) ..... 6.99 PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L= 0.600 4 PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L= 0.600 4
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 25.99 From the CIF: _reflns_number_total 510 Count of symmetry unique reflns 516 Completeness (_total/calc) 98.84% 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 PLAT005_ALERT_5_G No _iucr_refine_instructions_details in CIF .... ?
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 3 ALERT level C = Check. Ensure it is not caused by an omission or oversight 2 ALERT level G = General information/check it is not something unexpected 0 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 2 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check

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