Synthesis and Characterization of Imidocubanes with Exocube GeIVand SnIVSubstituents: [M(μ3-NGeMe3)]4(M = Sn, Ge, Pb); [Sn(μ3-NSnMe3)]4
Eichler, Jack F.; Just, Oliver; Rees, William S.; Inorganic Chemistry 45 (2006) 6706–6712; doi:10.1021/ic060331y

data_4332407
_publ_section_title
;
 Synthesis and Characterization of Imidocubanes with Exocube GeIVand
 SnIVSubstituents:&#x00A0; [M(\m3-NGeMe3)]4(M = Sn, Ge, Pb);
 [Sn(\m3-NSnMe3)]4
;
_journal_issue                   17
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6706
_journal_page_last               6712
_journal_paper_doi               10.1021/ic060331y
_journal_volume                  45
_journal_year                    2006
_chemical_formula_sum            'C24 H36 Ge8 N8 Pb8'
_chemical_formula_weight         2674.85
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           218
_symmetry_space_group_name_Hall  'P -4n 2 3'
_symmetry_space_group_name_H-M   'P -4 3 n'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.2282(14)
_cell_length_b                   18.2282(14)
_cell_length_c                   18.2282(14)
_cell_measurement_temperature    193(2)
_cell_volume                     6056.6(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_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  0.2330
_diffrn_reflns_av_sigmaI/netI    0.0853
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            36464
_diffrn_reflns_theta_full        28.68
_diffrn_reflns_theta_max         28.68
_diffrn_reflns_theta_min         1.58
_exptl_absorpt_coefficient_mu    26.067
_exptl_absorpt_correction_T_max  0.1474
_exptl_absorpt_correction_T_min  0.0367
_exptl_crystal_density_diffrn    2.933
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             4592
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         2.859
_refine_diff_density_min         -2.406
_refine_diff_density_rms         0.368
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(4)
_refine_ls_extinction_coef       0.00010(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.974
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     73
_refine_ls_number_reflns         2561
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.974
_refine_ls_R_factor_all          0.1119
_refine_ls_R_factor_gt           0.0579
_refine_ls_shift/su_max          0.031
_refine_ls_shift/su_mean         0.006
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0999P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1417
_refine_ls_wR_factor_ref         0.1753
_reflns_number_gt                1359
_reflns_number_total             2561
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic060331ysup5.cif
_cod_data_source_block           jfe64
_cod_database_code               4332407