Synthesis, Chemistry, and Electronic Structures of Group 9 Metallaboranes.
Borthakur, Rosmita; Kar, Sourav; Barik, Subrat Kumar; Bhattacharya, Somnath; Kundu, Gargi; Varghese, Babu; Ghosh, Sundargopal; Inorganic chemistry 56 (2017) 1524–1533; doi:10.1021/acs.inorgchem.6b02626

data_1545107
_publ_section_title
;
 Synthesis, Chemistry, and Electronic Structures of Group 9
 Metallaboranes.
;
_journal_issue                   3
_journal_name_full               'Inorganic chemistry'
_journal_page_first              1524
_journal_page_last               1533
_journal_paper_doi               10.1021/acs.inorgchem.6b02626
_journal_volume                  56
_journal_year                    2017
_chemical_formula_sum            'C20 H38 B10 Ir2 O2'
_chemical_formula_weight         803.00
_space_group_crystal_system      orthorhombic
_space_group_IT_number           62
_space_group_name_Hall           '-P 2ac 2n'
_space_group_name_H-M_alt        'P n m a'
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.6847(6)
_cell_length_b                   14.6954(6)
_cell_length_c                   10.9866(4)
_cell_measurement_reflns_used    9935
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.3
_cell_measurement_theta_min      2.2
_cell_volume                     2693.79(18)
_computing_cell_refinement       'APEX2/SAINT (Bruker, 2004)'
_computing_data_collection       'APEX2 (Bruker, 2004)'
_computing_data_reduction        'SAINT/XPREP (Bruker, 2004)'
_computing_molecular_graphics
'ORTEP3 (Farrugia, 1997) and Mercury (Bruno et al., 2002)'
_computing_publication_material  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SIR92 (Altornare et al., 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker axs kappa apex2 CCD Diffractometer'
_diffrn_measurement_method       '\w and \f scan'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0564
_diffrn_reflns_av_unetI/netI     0.0240
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            42066
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.999
_diffrn_reflns_theta_min         2.220
_diffrn_source                   'Sealed tube'
_exptl_absorpt_coefficient_mu    9.887
_exptl_absorpt_correction_T_max  0.74
_exptl_absorpt_correction_T_min  0.56
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Brucker, 1999)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.980
_exptl_crystal_description       block
_exptl_crystal_F_000             1512
_exptl_crystal_size_max          0.070
_exptl_crystal_size_mid          0.070
_exptl_crystal_size_min          0.040
_refine_diff_density_max         2.156
_refine_diff_density_min         -1.453
_refine_diff_density_rms         0.213
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.137
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     170
_refine_ls_number_reflns         3058
_refine_ls_number_restraints     72
_refine_ls_restrained_S_all      1.198
_refine_ls_R_factor_all          0.0477
_refine_ls_R_factor_gt           0.0346
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0418P)^2^+19.3293P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0858
_refine_ls_wR_factor_ref         0.0962
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2562
_reflns_number_total             3058
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ic6b02626_si_002.cif
_cod_data_source_block           NEW
_cod_depositor_comments
'Adding full bibliography for 1545104--1545108.cif.'
_cod_database_code               1545107
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.544
_shelx_estimated_absorpt_t_max   0.693
_shelx_res_checksum              5306
_shelx_hkl_checksum              59343