Reactions of the Heavier Group 14 Element Alkyne Analogues Ar'EEAr' (Ar' = C6H3-2,6(C6H3-2,6-Pri2)2; E = Ge, Sn) with Unsaturated Molecules: Probing the Character of the EE Multiple Bonds
Chunming Cui; Marilyn M. Olmstead; James C. Fettinger; Geoffrey H. Spikes; Philip P. Power; Journal of the American Chemical Society 127 (2005) 17530–17541; doi:10.1021/ja055372s

data_4112092
_publ_section_title
;
 Reactions of the Heavier Group 14 Element Alkyne Analogues Ar'EEAr' (Ar'
 = C6H3-2,6(C6H3-2,6-Pri2)2; E = Ge, Sn) with Unsaturated Molecules:
 Probing the Character of the EE Multiple Bonds
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              17530
_journal_page_last               17541
_journal_paper_doi               10.1021/ja055372s
_journal_volume                  127
_journal_year                    2005
_chemical_formula_sum            'C78 H98 N2 Sn2'
_chemical_formula_weight         1300.96
_chemical_name_common            '[Dipp*SnNPh]2.hexane'
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
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_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
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_cell_angle_beta                 90.114(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9584(19)
_cell_length_b                   27.587(5)
_cell_length_c                   20.622(3)
_cell_measurement_reflns_used    930
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      20.0
_cell_measurement_theta_min      3.5
_cell_volume                     6803.1(19)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART 5.054 (Bruker, 2002)'
_computing_data_reduction        'SAINT 6.36A (Bruker, 2002)'
_computing_molecular_graphics    'SHELXTL 5.1, XP (Sheldrick, 1994)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      93(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker SMART 1000'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0235
_diffrn_reflns_av_sigmaI/netI    0.0338
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       39
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            40367
_diffrn_reflns_theta_full        30.51
_diffrn_reflns_theta_max         30.51
_diffrn_reflns_theta_min         0.99
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.777
_exptl_absorpt_correction_T_max  0.8476
_exptl_absorpt_correction_T_min  0.6881
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2.05 (Sheldrick, 2002)'
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    1.270
_exptl_crystal_description       plate
_exptl_crystal_F_000             2720
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.46
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.889
_refine_diff_density_min         -0.416
_refine_diff_density_rms         0.067
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.989
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1511
_refine_ls_number_reflns         40345
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.989
_refine_ls_R_factor_all          0.0328
_refine_ls_R_factor_gt           0.0281
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0295P)^2^+3.0622P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0608
_refine_ls_wR_factor_ref         0.0631
_reflns_number_gt                37791
_reflns_number_total             40345
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ja055372ssi20050805_074721.cif
_cod_data_source_block           mn1520
_cod_original_cell_volume        6803(2)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4112092