(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2003). E59, m894-m896 [ doi:10.1107/S1600536803019858 ]

Bis[3-(4-methylcoumarinyl-7-oxy)--methoxy-1,1,3,3-tetramethyldistannoxane]

Y. Zhang, L. E. Khoo, T. Y. Tou and S. W. Ng

Key indicators

Single-crystal X-ray study
T = 298 K
Mean (C-C) = 0.012 Å
R factor = 0.037
wR factor = 0.078
Data-to-parameter ratio = 16.0

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ ....          ?
PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given .......          ?
PLAT152_ALERT_1_C Supplied and Calc Volume s.u. Inconsistent .....          ?
PLAT241_ALERT_2_C Check High   U(eq) as Compared to Neighbors ....         O1     
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors ....        Sn1     
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors ....        Sn2     
PLAT342_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ...         12       
PLAT720_ALERT_4_C Number of Unusual/Non-Standard Label(s) ........          1       

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

   2 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   3 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