Synthesis, Structural Characterization, and Reactivity of ‘Carbons-Adjacent'nido- andarachno-Carborane Anions of the C2B10Systems and Their Metal Complexes
Zi, Guofu; Li, Hung-Wing; Xie, Zuowei; Organometallics 21 (2002) 5415–; doi:10.1021/om020809f

data_4077164
_publ_section_title
;
 Synthesis, Structural Characterization, and Reactivity of
 &#x2018;Carbons-Adjacent'nido- andarachno-Carborane Anions of the
 C2B10Systems and Their Metal Complexes
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              5415
_journal_paper_doi               10.1021/om020809f
_journal_volume                  21
_journal_year                    2002
_chemical_formula_sum            'C32 H54 B10 Na2 O4'
_chemical_formula_weight         656.83
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_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                   25.2027(15)
_cell_length_b                   13.9213(8)
_cell_length_c                   11.4686(7)
_cell_measurement_temperature    293(2)
_cell_volume                     4023.8(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_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  0.0771
_diffrn_reflns_av_sigmaI/netI    0.0859
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            16889
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.62
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8652
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            pale-yellow
_exptl_crystal_density_diffrn    1.084
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1400
_exptl_crystal_size_max          0.72
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.299
_refine_diff_density_min         -0.293
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(3)
_refine_ls_extinction_coef       0.0031(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   0.930
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     435
_refine_ls_number_reflns         5180
_refine_ls_number_restraints     11
_refine_ls_restrained_S_all      0.933
_refine_ls_R_factor_all          0.1181
_refine_ls_R_factor_gt           0.0704
_refine_ls_shift/su_max          0.181
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1153P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1726
_refine_ls_wR_factor_ref         0.1986
_reflns_number_gt                2957
_reflns_number_total             5180
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om020809f.cif
_cod_data_source_block           11
_cod_original_sg_symbol_H-M      Pca2(1)
_cod_database_code               4077164