The Ullmann Coupling Reaction: A New Approach to Tetraarylstannanes
Shaikh, Nadim S.; Parkin, Sean; Lehmler, Hans-Joachim; Organometallics 25 (2006) 4207–; doi:10.1021/om060456a

data_4074203
_publ_section_title
;
 The Ullmann Coupling Reaction:&#x00A0; A New Approach to
 Tetraarylstannanes
;
_journal_issue                   17
_journal_name_full               Organometallics
_journal_page_first              4207
_journal_paper_doi               10.1021/om060456a
_journal_volume                  25
_journal_year                    2006
_chemical_formula_moiety         'C32 H36 Sn'
_chemical_formula_sum            'C32 H36 Sn'
_chemical_formula_weight         539.30
_chemical_name_systematic
; 
Tetrakis-(2,4-dimethyl-phenyl)stannane
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                66.4013(4)
_cell_angle_beta                 69.3562(4)
_cell_angle_gamma                70.6943(4)
_cell_formula_units_Z            2
_cell_length_a                   10.9038(1)
_cell_length_b                   12.0001(1)
_cell_length_c                   12.4461(1)
_cell_measurement_reflns_used    41438
_cell_measurement_temperature    90.0(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     1362.00(2)
_computing_cell_refinement       'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP in SHELXTL (Sheldrick, 1994)'
_computing_publication_material
; 
SHELX97-2 (Sheldrick, 1997) and local procedures 
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      90.0(2)
_diffrn_detector_area_resol_mean 18
_diffrn_measured_fraction_theta_full .999
_diffrn_measured_fraction_theta_max .999
_diffrn_measurement_device_type  'Nonius KappaCCD diffractometer'
_diffrn_measurement_method       '\w scans at fixed \c = 55\%'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0328
_diffrn_reflns_av_sigmaI/netI    0.0241
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            31533
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.85
_exptl_absorpt_coefficient_mu    0.955
_exptl_absorpt_correction_T_max  0.894
_exptl_absorpt_correction_T_min  0.796
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             556
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.307
_refine_diff_density_min         -.388
_refine_diff_density_rms         .063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     306
_refine_ls_number_reflns         6254
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0263
_refine_ls_R_factor_gt           0.0225
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0174P)^2^+1.1273P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0517
_refine_ls_wR_factor_ref         0.0536
_reflns_number_gt                5793
_reflns_number_total             6254
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            om060456asi20060524_105305.cif
_cod_data_source_block           k06011
_cod_database_code               4074203