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_4335447
_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         'C20 H34 B5 Mo2 Se'
_chemical_formula_sum            'C20 H34 B5 Mo2 Se'
_chemical_formula_weight         599.36
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 110.812(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.8520(5)
_cell_length_b                   16.3337(6)
_cell_length_c                   14.7432(6)
_cell_measurement_reflns_used    4561
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      67.1
_cell_measurement_theta_min      4.0
_cell_volume                     2442.77(19)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd.,'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_molecular_graphics    Ortep3
_computing_publication_material  Shelx97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'OXFORD DIFFRACTION SUPER NOVA'
_diffrn_measurement_method       \w/q-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Micro-Focus (Cu) x-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0289
_diffrn_reflns_av_sigmaI/netI    0.0187
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            16794
_diffrn_reflns_theta_full        72.08
_diffrn_reflns_theta_max         72.08
_diffrn_reflns_theta_min         4.20
_exptl_absorpt_coefficient_mu    10.108
_exptl_absorpt_correction_T_max  0.4314
_exptl_absorpt_correction_T_min  0.1866
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlis RED; Oxford Diffraction, 2009)'
_exptl_crystal_colour            Brown
_exptl_crystal_density_diffrn    1.630
_exptl_crystal_description       Block
_exptl_crystal_F_000             1188
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         2.551
_refine_diff_density_min         -0.898
_refine_diff_density_rms         0.147
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.131
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         4754
_refine_ls_number_restraints     100
_refine_ls_restrained_S_all      1.127
_refine_ls_R_factor_all          0.0475
_refine_ls_R_factor_gt           0.0464
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0543P)^2^+15.0435P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1187
_refine_ls_wR_factor_ref         0.1196
_reflns_number_gt                4626
_reflns_number_total             4754
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic400432v_si_002_3.cif
_cod_data_source_block           4
_cod_original_cell_volume        2442.77(17)
_cod_original_sg_symbol_Hall     ' -P 2yn '
_cod_database_code               4335447