Weakly Coordinating Nature of a Carborane Cage Bearing Different Halogen Atoms. Synthesis and Structural Characterization of Icosahedral Mixed Halocarborane Anions, 1-H-CB11Y5X6- (X, Y = Cl, Br, I)
Chi-Wing Tsang; Qingchuan Yang; Eric Tung-Po Sze; Thomas C. W. Mak; Dominic T. W. Chan; Zuowei Xie; Inorganic Chemistry 39 (2000) 5851–5858; doi:10.1021/ic000354r

data_4321640
_publ_section_title
;
 Weakly Coordinating Nature of a Carborane Cage Bearing Different Halogen
 Atoms. Synthesis and Structural Characterization of Icosahedral Mixed
 Halocarborane Anions, 1-H-CB11Y5X6- (X, Y = Cl, Br, I)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5851
_journal_page_last               5858
_journal_paper_doi               10.1021/ic000354r
_journal_volume                  39
_journal_year                    2000
_chemical_formula_sum            'C21 H26 Ag B11 Cl11'
_chemical_formula_weight         895.15
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                100.155(1)
_cell_angle_beta                 102.772(1)
_cell_angle_gamma                100.957(1)
_cell_formula_units_Z            2
_cell_length_a                   9.3794(5)
_cell_length_b                   11.6817(6)
_cell_length_c                   18.0382(9)
_cell_measurement_temperature    294(2)
_cell_volume                     1842.50(17)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi ang 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  0.0149
_diffrn_reflns_av_sigmaI/netI    0.0190
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            12958
_diffrn_reflns_theta_full        28.33
_diffrn_reflns_theta_max         28.33
_diffrn_reflns_theta_min         1.82
_exptl_absorpt_coefficient_mu    1.362
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7409
_exptl_absorpt_correction_type   abscor
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.613
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             882
_exptl_crystal_size_max          0.90
_exptl_crystal_size_mid          0.82
_exptl_crystal_size_min          0.46
_refine_diff_density_max         0.761
_refine_diff_density_min         -0.689
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         9023
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0499
_refine_ls_R_factor_gt           0.0377
_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^)+(0.0474P)^2^+1.1097P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0959
_refine_ls_wR_factor_ref         0.1032
_reflns_number_gt                7273
_reflns_number_total             9023
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic000354r_4.cif
_cod_data_source_block           Ag[1-HCB11Cl11](p-xylene)2.5
_cod_original_cell_volume        1842.5(2)
_cod_database_code               4321640