Hypoelectronic Dimetallaheteroboranes of Group 6 Transition Metals Containing Heavier Chalcogen Elements
Kiran Kumarvarma Chakrahari; Arunabha Thakur; Bijan Mondal; V. Ramkumar; Sundargopal Ghosh; Inorganic Chemistry 52 (2013) 7923–7932; doi:10.1021/ic400432v

data_4335452
_publ_section_title
;
 Hypoelectronic Dimetallaheteroboranes of Group 6 Transition Metals
 Containing Heavier Chalcogen Elements
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7923
_journal_page_last               7932
_journal_paper_doi               10.1021/ic400432v
_journal_volume                  52
_journal_year                    2013
_chemical_formula_moiety         'C26 H33 B3 Co2 Mo2 O6 Se'
_chemical_formula_sum            'C26 H33 B3 Co2 Mo2 O6 Se'
_chemical_formula_weight         862.65
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n 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                   15.8493(5)
_cell_length_b                   12.1257(4)
_cell_length_c                   15.9708(5)
_cell_measurement_reflns_used    7479
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.2
_cell_measurement_theta_min      2.6
_cell_volume                     3069.33(17)
_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-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR92 (Altornare et al., 1993)'
_diffrn_ambient_temperature      173(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_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0523
_diffrn_reflns_av_sigmaI/netI    0.0466
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            31042
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.11
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    3.084
_exptl_absorpt_correction_T_max  0.631
_exptl_absorpt_correction_T_min  0.482
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS(Bruker, 1999)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.867
_exptl_crystal_description       block
_exptl_crystal_F_000             1696
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.361
_refine_diff_density_min         -0.378
_refine_diff_density_rms         0.076
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.010(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     383
_refine_ls_number_reflns         5311
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.0428
_refine_ls_R_factor_gt           0.0266
_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^)+(0.0138P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0416
_refine_ls_wR_factor_ref         0.0452
_reflns_number_gt                4458
_reflns_number_total             5311
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic400432v_si_002_8.cif
_cod_data_source_block           10
_cod_original_sg_symbol_Hall     ' P 2c -2n '
_cod_database_code               4335452