Radical Germylzincation of α-Heteroatom-Substituted Alkynes.
de la Vega-Hernández, Karen; Romain, Elise; Coffinet, Anais; Bijouard, Kajetan; Gontard, Geoffrey; Chemla, Fabrice; Ferreira, Franck; Jackowski, Olivier; Perez-Luna, Alejandro; Journal of the American Chemical Society 140 (2018) 17632–17642; doi:10.1021/jacs.8b09851

data_4133394
_publ_section_title
;
 Radical Germylzincation of \a-Heteroatom-Substituted Alkynes.
;
_journal_issue                   50
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              17632
_journal_page_last               17642
_journal_paper_doi               10.1021/jacs.8b09851
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C30 H37 Ge N O3 Si'
_chemical_formula_sum            'C30 H37 Ge N O3 Si'
_chemical_formula_weight         560.28
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2017/1
_cell_angle_alpha                90
_cell_angle_beta                 92.830(3)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   11.7444(5)
_cell_length_b                   15.9338(8)
_cell_length_c                   32.3292(16)
_cell_measurement_reflns_used    9991
_cell_measurement_temperature    200(1)
_cell_measurement_theta_max      66.32
_cell_measurement_theta_min      3.95
_cell_volume                     6042.5(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'SXGRAPH (Farrugia, 2012)'
_computing_publication_material  'WinGX (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      200(1)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_source         micro-source
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0791
_diffrn_reflns_av_unetI/netI     0.0624
_diffrn_reflns_Laue_measured_fraction_full 0.978
_diffrn_reflns_Laue_measured_fraction_max 0.975
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            47637
_diffrn_reflns_point_group_measured_fraction_full 0.978
_diffrn_reflns_point_group_measured_fraction_max 0.975
_diffrn_reflns_theta_full        66.500
_diffrn_reflns_theta_max         66.660
_diffrn_reflns_theta_min         2.737
_exptl_absorpt_coefficient_mu    1.981
_exptl_absorpt_correction_T_max  0.899
_exptl_absorpt_correction_T_min  0.528
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
; 
 SADABS : Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.232
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bar
_exptl_crystal_F_000             2352
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.367
_refine_diff_density_min         -0.399
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     712
_refine_ls_number_reflns         10414
_refine_ls_number_restraints     60
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0558
_refine_ls_R_factor_gt           0.0455
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0644P)^2^+4.1831P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1239
_refine_ls_wR_factor_ref         0.1319
_reflns_number_gt                8643
_reflns_number_total             10414
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b09851_si_002.cif
_cod_data_source_block           Compound_23
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4133394
_shelx_shelxl_version_number     2017/1
_shelx_res_checksum              44218
_shelx_hkl_checksum              44950