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_4133395
_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         'C26 H24 F3 Ge N O2'
_chemical_formula_sum            'C26 H24 F3 Ge N O2'
_chemical_formula_weight         512.05
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 96.907(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   11.4162(3)
_cell_length_b                   16.8675(5)
_cell_length_c                   24.7995(7)
_cell_measurement_reflns_used    9923
_cell_measurement_temperature    200(1)
_cell_measurement_theta_max      30.35
_cell_measurement_theta_min      2.24
_cell_volume                     4740.8(2)
_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 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'curved graphite'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0319
_diffrn_reflns_av_unetI/netI     0.0337
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            61522
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.569
_diffrn_reflns_theta_min         2.048
_exptl_absorpt_coefficient_mu    1.339
_exptl_absorpt_correction_T_max  0.953
_exptl_absorpt_correction_T_min  0.802
_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    1.435
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             2096
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.464
_refine_diff_density_min         -0.348
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     595
_refine_ls_number_reflns         14521
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0561
_refine_ls_R_factor_gt           0.0333
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0362P)^2^+1.3268P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0716
_refine_ls_wR_factor_ref         0.0787
_reflns_number_gt                10801
_reflns_number_total             14521
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b09851_si_002.cif
_cod_data_source_block           Compound_25
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4133395
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              91008
_shelx_hkl_checksum              39574