(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2004). E60, m1536-m1538 [ doi:10.1107/S160053680402330X ]

(2-Methyl-2-phenylpropyl)triphenylstannane

R. A. Howie and J. L. Wardell

Online 30 September 2004

Key indicators

Single-crystal X-ray study
T = 120 K
Mean (C-C) = 0.005 Å
R factor = 0.027
wR factor = 0.067
Data-to-parameter ratio = 13.4

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT029_ALERT_3_C _diffrn_measured_fraction_theta_full Low .......       0.97       
PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given .......          ?

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           27.48
           From the CIF: _reflns_number_total               3545
           Count of symmetry unique reflns         2738
           Completeness (_total/calc)            129.47%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured       807
           Fraction of Friedel pairs measured     0.295
           Are heavy atom types Z>Si present          yes

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

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