Synthesis and Structural Characterization of Tris(2-oxo-1-t-butylimidazolyl) and Tris(2-oxo-1-methylbenzimidazolyl) hydroborato Complexes: A New Class of Tripodal Oxygen Donor Ligand
Ahmed Al-Harbi; Wesley Sattler; Aaron Sattler; Gerard Parkin; Chem.Commun. 47 (2011) 3123–; doi:10.1039/c0cc03943h

data_7106065
_publ_section_title
;
 Synthesis and Structural Characterization of
 Tris(2-oxo-1-t-butylimidazolyl) and Tris(2-oxo-1-methylbenzimidazolyl)
 hydroborato Complexes: A New Class of Tripodal Oxygen Donor Ligand
;
_journal_name_full               Chem.Commun.
_journal_page_first              3123
_journal_paper_doi               10.1039/c0cc03943h
_journal_volume                  47
_journal_year                    2011
_chemical_formula_sum            'C27 H22 B N6 O6 Re'
_chemical_formula_weight         723.52
_chemical_name_systematic
;
?
;
_space_group_IT_number           148
_symmetry_cell_setting           rhombohedral
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_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                120.00
_cell_formula_units_Z            6
_cell_length_a                   15.5893(14)
_cell_length_b                   15.5893(14)
_cell_length_c                   19.0929(14)
_cell_measurement_reflns_used    9238
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      32.51
_cell_measurement_theta_min      2.61
_cell_volume                     4018.4(6)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.966
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0271
_diffrn_reflns_av_sigmaI/netI    0.0158
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            23365
_diffrn_reflns_theta_full        32.71
_diffrn_reflns_theta_max         32.71
_diffrn_reflns_theta_min         1.85
_exptl_absorpt_coefficient_mu    4.590
_exptl_absorpt_correction_T_max  0.5460
_exptl_absorpt_correction_T_min  0.5460
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            COLORLESS
_exptl_crystal_density_diffrn    1.794
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             2124
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.290
_refine_diff_density_min         -0.428
_refine_diff_density_rms         0.084
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         3200
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0187
_refine_ls_R_factor_gt           0.0167
_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^)+(0.0234P)^2^+3.9801P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0410
_refine_ls_wR_factor_ref         0.0418
_reflns_number_gt                3025
_reflns_number_total             3200
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0CC03943H.TXT
_cod_data_source_block           btores10
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Rhombohedral' changed to
'rhombohedral' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'EMPIRICAL'
changed to 'empirical' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_sg_symbol_H-M      R-3
_cod_database_code               7106065