Synthesis and Structural Characterization of Highly Chlorinated, Brominated, Iodinated, and Methylated Carborane Anions, 1-H-CB9X9-, 1-NH2-CB9X9- (X = Cl, Br, I), and 1-H-CB9(CH3)9-
Chi-Wing Tsang; Qingchuan Yang; Eric Tung-Po Sze; Thomas C. W. Mak; Dominic T. W. Chan; Zuowei Xie; Inorganic Chemistry 39 (2000) 3582–3589; doi:10.1021/ic000137q

data_4321205
_publ_section_title
;
 Synthesis and Structural Characterization of Highly Chlorinated,
 Brominated, Iodinated, and Methylated Carborane Anions, 1-H-CB9X9-,
 1-NH2-CB9X9- (X = Cl, Br, I), and 1-H-CB9(CH3)9-
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3582
_journal_page_last               3589
_journal_paper_doi               10.1021/ic000137q
_journal_volume                  39
_journal_year                    2000
_chemical_formula_sum            'C18 H22 Ag3 B18 Br18 N O4'
_chemical_formula_weight         2272.94
_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                 96.647(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.848(2)
_cell_length_b                   16.323(2)
_cell_length_c                   17.9470(16)
_cell_measurement_temperature    293(2)
_cell_volume                     5484.4(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.818
_diffrn_measured_fraction_theta_max 0.818
_diffrn_measurement_device_type  IP
_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    0.1225
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            6238
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.66
_exptl_absorpt_coefficient_mu    14.205
_exptl_absorpt_correction_T_max  1.230
_exptl_absorpt_correction_T_min  0.693
_exptl_absorpt_correction_type   abscor
_exptl_crystal_colour            pale_brown
_exptl_crystal_density_diffrn    2.753
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             4120
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.48
_refine_diff_density_max         0.931
_refine_diff_density_min         -0.683
_refine_diff_density_rms         0.180
_refine_ls_extinction_coef       0.000000(12)
_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   1.175
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     560
_refine_ls_number_reflns         6238
_refine_ls_number_restraints     82
_refine_ls_restrained_S_all      1.167
_refine_ls_R_factor_all          0.1215
_refine_ls_R_factor_gt           0.0851
_refine_ls_shift/su_max          0.676
_refine_ls_shift/su_mean         0.013
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0371P)^2^+10.9865P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1330
_refine_ls_wR_factor_ref         0.1459
_reflns_number_gt                5044
_reflns_number_total             6238
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic000137q_3.cif
_cod_data_source_block           Ag3[3]2[NO3](THF)(benzene)2
_cod_original_cell_volume        5484.4(11)
_cod_database_code               4321205