Chemistry of Molybdaboranes: Synthesis, Structures, and Characterization of a New Class of Open-Cage Dimolybdaheteroborane Clusters
Rajendra Singh Dhayal; Kiran Kumar Varma Chakrahari; Babu Varghese; Shaikh M. Mobin; Sundargopal Ghosh; Inorganic Chemistry 49 (2010) 7741–7747; doi:10.1021/ic100520k

data_4316353
_publ_section_title
;
 Chemistry of Molybdaboranes: Synthesis, Structures, and Characterization
 of a New Class of Open-Cage Dimolybdaheteroborane Clusters
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7741
_journal_page_last               7747
_journal_paper_doi               10.1021/ic100520k
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'C40 H60 B2 Mo4 S7'
_chemical_formula_weight         1170.68
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           11
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.000(5)
_cell_angle_beta                 95.380(5)
_cell_angle_gamma                90.000(5)
_cell_formula_units_Z            2
_cell_length_a                   12.744(5)
_cell_length_b                   14.785(5)
_cell_length_c                   14.632(5)
_cell_measurement_reflns_used    2248
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.6
_cell_volume                     2744.8(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, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altornare et al., 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0398
_diffrn_reflns_av_sigmaI/netI    0.0294
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            27442
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.40
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.183
_exptl_absorpt_correction_T_max  0.881
_exptl_absorpt_correction_T_min  0.723
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 1999)'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.416
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1180
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         3.447
_refine_diff_density_min         -1.503
_refine_diff_density_rms         0.273
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.486
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     259
_refine_ls_number_reflns         5038
_refine_ls_number_restraints     218
_refine_ls_restrained_S_all      1.549
_refine_ls_R_factor_all          0.1123
_refine_ls_R_factor_gt           0.0932
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3123
_refine_ls_wR_factor_ref         0.3482
_reflns_number_gt                3873
_reflns_number_total             5038
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic100520k_si_001_3.cif
_cod_data_source_block           III
_cod_database_code               4316353