[Open access]

[Contents scheme]

Acta Cryst. (2012). E68, m1320
[ doi:10.1107/S1600536812040925 ]

Bis(2,4,6-trimethylpyridinium) tetrabromidozincate

B. F. Ali, S. F. Haddad and R. Al-Far


Key indicators

checkCIF/PLATON results

No syntax errors found




Alert level B PLAT341_ALERT_3_B Low Bond Precision on C-C Bonds ............... 0.0201 Ang PLAT915_ALERT_3_B Low Friedel Pair Coverage ...................... 41 Perc.
Alert level C PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C1 PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for Zn1 PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd. # 1 C8 H12 N PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 2
Alert level G REFLT03_ALERT_4_G WARNING: Large fraction of Friedel related reflns may be needed to determine absolute structure From the CIF: _diffrn_reflns_theta_max 25.02 From the CIF: _reflns_number_total 2730 Count of symmetry unique reflns 1933 Completeness (_total/calc) 141.23% TEST3: Check Friedels for noncentro structure Estimate of Friedel pairs measured 797 Fraction of Friedel pairs measured 0.412 Are heavy atom types Z>Si present yes PLAT005_ALERT_5_G No _iucr_refine_instructions_details in CIF .... ? PLAT007_ALERT_5_G Note: Number of Unrefined D-H Atoms ............ 2 PLAT152_ALERT_1_G The Supplied and Calc. Volume s.u. Differ by ... 2 Units PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature 293 K PLAT794_ALERT_5_G Note: Tentative Bond Valency for Zn1 (II) 1.95 PLAT909_ALERT_3_G Percentage of Observed Data at Theta(Max) still 59 Perc.
0 ALERT level A = Most likely a serious problem - resolve or explain 2 ALERT level B = A potentially serious problem, consider carefully 4 ALERT level C = Check. Ensure it is not caused by an omission or oversight 8 ALERT level G = General information/check it is not something unexpected 3 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 4 ALERT type 3 Indicator that the structure quality may be low 2 ALERT type 4 Improvement, methodology, query or suggestion 3 ALERT type 5 Informative message, check

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