Synthesis and Structural Characterization ofcloso-exo,exo-nido, andpseudoclosoGroup 1 Carborane Compounds of the C2B10System
Chui, Kwoli; Li, Hung-Wing; Xie, Zuowei; Organometallics 19 (2000) 5447–; doi:10.1021/om000547m

data_4077585
_publ_section_title
;
 Synthesis and Structural Characterization ofcloso-exo,exo-nido,
 andpseudoclosoGroup 1 Carborane Compounds of the C2B10System
;
_journal_issue                   25
_journal_name_full               Organometallics
_journal_page_first              5447
_journal_paper_doi               10.1021/om000547m
_journal_volume                  19
_journal_year                    2000
_chemical_formula_sum            'C26 H44 B10 K2 O3'
_chemical_formula_weight         590.91
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_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                 110.30(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   25.860(5)
_cell_length_b                   10.350(2)
_cell_length_c                   26.976(5)
_cell_measurement_temperature    293(2)
_cell_volume                     6772(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.845
_diffrn_measured_fraction_theta_max 0.845
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.1176
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            3732
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.14
_exptl_absorpt_coefficient_mu    0.306
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9551
_exptl_absorpt_correction_type   abscor
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.159
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2496
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.359
_refine_diff_density_min         -0.301
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.077
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     446
_refine_ls_number_reflns         3732
_refine_ls_number_restraints     29
_refine_ls_restrained_S_all      1.151
_refine_ls_R_factor_all          0.0902
_refine_ls_R_factor_gt           0.0837
_refine_ls_shift/su_max          0.221
_refine_ls_shift/su_mean         0.014
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1544P)^2^+1.8272P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2253
_refine_ls_wR_factor_ref         0.2337
_reflns_number_gt                3391
_reflns_number_total             3832
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om000547m.cif
_cod_data_source_block           compound_2
_cod_original_cell_volume        6772(2)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4077585