Synthesis and Reactivity of 1,2-Bis(chlorodimethylgermyl)carborane and 1,2-Bis(bromodimethylstannyl)carborane
Chongchan Lee; Junghyun Lee; Soon W. Lee; Sang Ook Kang; Jaejung Ko; Inorganic Chemistry 41 (2002) 3084–3090; doi:10.1021/ic0110878

data_4318074
_publ_section_title
;
 Synthesis and Reactivity of 1,2-Bis(chlorodimethylgermyl)carborane and
 1,2-Bis(bromodimethylstannyl)carborane
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3084
_journal_page_last               3090
_journal_paper_doi               10.1021/ic0110878
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C8 H32 B20 Ge2'
_chemical_formula_weight         489.72
_chemical_name_systematic
;
  ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 107.349(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.8685(8)
_cell_length_b                   9.6393(7)
_cell_length_c                   13.1644(10)
_cell_measurement_temperature    295(2)
_cell_volume                     1195.30(16)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_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  0.0235
_diffrn_reflns_av_sigmaI/netI    0.0362
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            2196
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.66
_exptl_absorpt_coefficient_mu    2.511
_exptl_crystal_density_diffrn    1.361
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             488
_refine_diff_density_max         0.473
_refine_diff_density_min         -0.331
_refine_diff_density_rms         0.073
_refine_ls_extinction_coef       0.0004(7)
_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   1.065
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         2068
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0402
_refine_ls_R_factor_gt           0.0313
_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^)+(0.0255P)^2^+1.8677P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0758
_refine_ls_wR_factor_ref         0.0831
_reflns_number_gt                1782
_reflns_number_total             2068
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0110878_4.cif
_cod_data_source_block           abs
_cod_database_code               4318074