Synthesis and Reactivity of a Phosphine-Stabilized Monogermanium Analogue of Alkynes
Juliette Berthe; Juan Manuel Garcia; Edgar Ocando; Tsuyoshi Kato; Nathalie Saffon-Merceron; Abel De Cózar; Fernando P. Cossío; Antoine Baceiredo; Journal of the American Chemical Society 133 (2011) 15930–15933; doi:10.1021/ja2073577

data_4106944
_publ_section_title
;
 Synthesis and Reactivity of a Phosphine-Stabilized Monogermanium Analogue
 of Alkynes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15930
_journal_page_last               15933
_journal_paper_doi               10.1021/ja2073577
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C42 H77 Ge N5 P2 Si'
_chemical_formula_weight         814.71
_chemical_name_systematic
; 
 ? 
;
_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                100.199(5)
_cell_angle_beta                 93.700(4)
_cell_angle_gamma                100.552(5)
_cell_formula_units_Z            2
_cell_length_a                   10.0652(9)
_cell_length_b                   12.1234(11)
_cell_length_c                   20.7037(19)
_cell_measurement_reflns_used    9892
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      22.89
_cell_measurement_theta_min      2.43
_cell_volume                     2432.1(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.970
_diffrn_measured_fraction_theta_max 0.970
_diffrn_measurement_device_type  'Bruker kappa APEX-II CCD Quazar'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0516
_diffrn_reflns_av_sigmaI/netI    0.0411
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            45412
_diffrn_reflns_theta_full        23.26
_diffrn_reflns_theta_max         23.26
_diffrn_reflns_theta_min         5.10
_exptl_absorpt_coefficient_mu    0.752
_exptl_absorpt_correction_T_max  0.8521
_exptl_absorpt_correction_T_min  0.7531
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker-AXS)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.113
_exptl_crystal_description       block
_exptl_crystal_F_000             880
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.775
_refine_diff_density_min         -0.391
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.184
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     480
_refine_ls_number_reflns         6765
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.184
_refine_ls_R_factor_all          0.0725
_refine_ls_R_factor_gt           0.0524
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0266P)^2^+5.6449P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1163
_refine_ls_wR_factor_ref         0.1264
_reflns_number_gt                5504
_reflns_number_total             6765
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja2073577_si_002.cif
_cod_data_source_block           4a
_cod_database_code               4106944