Reactions of a Highly Crowded Cyclic Stannylene with Iodoalkanes, Enones, and Dienes. Inhibition of Nucleophilic Substitution at Tin(IV) Centers
Asadi, Ashrafolmolouk; Eaborn, Colin; Hill, Michael S.; Hitchcock, Peter B.; Meehan, Margaret M.; Smith, J. David; Organometallics 21 (2002) 2430–; doi:10.1021/om020106y

data_4089720
_publ_section_title
;
 Reactions of a Highly Crowded Cyclic Stannylene with Iodoalkanes, Enones,
 and Dienes. Inhibition of Nucleophilic Substitution at Tin(IV) Centers
;
_journal_issue                   12
_journal_name_full               Organometallics
_journal_page_first              2430
_journal_paper_doi               10.1021/om020106y
_journal_volume                  21
_journal_year                    2002
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         '(C22 H57 I Si6 Sn).0.5(CH2Cl2)'
_chemical_formula_sum            'C22.5 H58 Cl I Si6 Sn'
_chemical_formula_weight         778.27
_chemical_name_common            aug2300
_space_group_IT_number           86
_space_group_name_Hall           '-P 4bc'
_space_group_name_H-M_alt        'P 42/n :2'
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      86
_symmetry_space_group_name_H-M   'P 42/n :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/cifdics/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.1
_audit_creation_date             2000-08-25T17:39:35-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   27.4200(10)
_cell_length_b                   27.4200(9)
_cell_length_c                   9.2590(3)
_cell_measurement_reflns_used    117529
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      3.705
_cell_measurement_wavelength     0.71073
_cell_volume                     6961.4(4)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97  (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1208
_diffrn_reflns_av_unetI/netI     0.0817
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -38
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            43058
_diffrn_reflns_theta_full        29.99
_diffrn_reflns_theta_max         29.99
_diffrn_reflns_theta_min         3.7
_exptl_absorpt_coefficient_mu    1.916
_exptl_absorpt_correction_T_max  1.0813
_exptl_absorpt_correction_T_min  0.7201
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.485
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             3176
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         3.129
_refine_diff_density_min         -1.23
_refine_diff_density_rms         0.192
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         10082
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0897
_refine_ls_R_factor_gt           0.0578
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0919P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1452
_refine_ls_wR_factor_ref         0.1632
_reflns_number_gt                7063
_reflns_number_total             10082
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om020106y.cif
_cod_data_source_block           aug2300
_cod_original_sg_symbol_H-M      P4(2)/n
_cod_original_formula_sum        'C22.50 H58 Cl I Si6 Sn'
_cod_database_code               4089720