BiPh3–a convenient synthon for heavy alkaline-earth metal amides.
Gillett-Kunnath, Miriam M; MacLellan, Jonathan G; Forsyth, Craig M; Andrews, Philip C; Deacon, Glen B; Ruhlandt-Senge, Karin; Chemical communications (Cambridge, England)  (2008) 4490–4492; doi:10.1039/b806948d

data_7103358
_publ_section_title
;
 BiPh3--a convenient synthon for heavy alkaline-earth metal amides.
;
_journal_issue                   37
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              4490
_journal_page_last               4492
_journal_paper_doi               10.1039/b806948d
_journal_year                    2008
_chemical_formula_sum            'C36 H64 Ba N2 O3 Si2'
_chemical_formula_weight         766.41
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.7920(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   17.1615(10)
_cell_length_b                   12.2957(7)
_cell_length_c                   38.200(2)
_cell_measurement_temperature    104(2)
_cell_volume                     8059.8(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      104(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0307
_diffrn_reflns_av_sigmaI/netI    0.0274
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       50
_diffrn_reflns_limit_l_min       -49
_diffrn_reflns_number            41841
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    1.078
_exptl_absorpt_correction_T_max  0.8999
_exptl_absorpt_correction_T_min  0.6724
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             3216
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.868
_refine_diff_density_min         -0.859
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.125
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     409
_refine_ls_number_reflns         9999
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.125
_refine_ls_R_factor_all          0.0368
_refine_ls_R_factor_gt           0.0318
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0322P)^2^+10.7486P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0716
_refine_ls_wR_factor_ref         0.0737
_reflns_number_gt                9058
_reflns_number_total             9999
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b806948d.txt
_cod_data_source_block           sad1
_cod_database_code               7103358