Acta Cryst. (2008). E64, i41  [ doi:10.1107/S1600536808015225 ]

K_0.8Ag_0.2Nb₄O₉AsO₄

R. Ben Amor, M. F. Zid and A. Driss

Online 24 mai 2008

Key indicators

• Single-crystal X-ray study
• T = 298 K
• Mean (As-O) = 0.004 Å
• Disorder in main residue
• R factor = 0.024
• wR factor = 0.067
• Data-to-parameter ratio = 11.8

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT301_ALERT_3_C Main Residue  Disorder .........................       2.00 Perc.
PLAT041_ALERT_1_C Calc. and Rep. SumFormula Strings    Differ ....          ?
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ ....          ?
PLAT045_ALERT_1_C Calculated and Reported Z Differ by ............       0.25 Ratio
PLAT068_ALERT_1_C Reported F000 Differs from Calcd (or Missing)...          ?
PLAT077_ALERT_4_C Unitcell contains non-integer number of atoms ..          ?

Alert level G
PLAT302_ALERT_4_G Anion/Solvent Disorder .........................      29.00 Perc.

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

   4 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
   1 ALERT type 3 Indicator that the structure quality may be low
   2 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

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