Acta Cryst. (2004). E60, i116-i117  [ doi:10.1107/S160053680401966X ]

KSn₄(PO₄)₃

J.-F. Deng, Y.-J. Kang, J.-X. Mi, M.-R. Li, J.-T. Zhao and S.-Y. Mao

Online 21 August 2004

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (P-O) = 0.004 Å
• R factor = 0.017
• wR factor = 0.041
• Data-to-parameter ratio = 15.1

checkCIF/PLATON results

No syntax errors found



Alert level A
PLAT029_ALERT_3_A _diffrn_measured_fraction_theta_full Low .......       0.88       
PLAT430_ALERT_2_A Short Inter D...A Contact  O1     ..  O3      ..       2.47 Ang.  

Alert level C
PLAT041_ALERT_1_C Calc. and Rep. SumFormula Strings    Differ ....          ?
PLAT045_ALERT_1_C Calculated and Reported Z Differ by ............       0.33 Ratio 
PLAT062_ALERT_4_C Rescale T(min) & T(max) by .....................       0.83       
PLAT152_ALERT_1_C Supplied and Calc Volume s.u. Inconsistent .....          ?

Alert level G
ABSTM02_ALERT_3_G  When printed, the submitted absorption T values will be
            replaced by the scaled T values. Since the ratio of scaled T's
            is identical to the ratio of reported T values, the scaling
            does not imply a change to the absorption corrections used in
            the study.
            Ratio of Tmax expected/reported      0.833
            Tmax scaled      0.349 Tmin scaled      0.290
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           28.23
           From the CIF: _reflns_number_total                936
           Count of symmetry unique reflns          557
           Completeness (_total/calc)            168.04%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured       379
           Fraction of Friedel pairs measured     0.680
           Are heavy atom types Z>Si present          yes

   2 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

   3 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
   2 ALERT type 3 Indicator that the structure quality may be low
   2 ALERT type 4 Improvement, methodology, query or suggestion

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