Synthesis, Structure, and Olefin Polymerization Behavior of Constrained-Geometry Group 4 Metallacarboranes Incorporating Imido-Dicarbollyl Ligands
Gao, Mingli; Tang, Yong; Xie, Meihua; Qian, Changtao; Xie, Zuowei; Organometallics 25 (2006) 2578–; doi:10.1021/om060125y

data_4075216
_publ_section_title
;
 Synthesis, Structure, and Olefin Polymerization Behavior of
 Constrained-Geometry Group 4 Metallacarboranes Incorporating
 Imido-Dicarbollyl Ligands
;
_journal_issue                   10
_journal_name_full               Organometallics
_journal_page_first              2578
_journal_paper_doi               10.1021/om060125y
_journal_volume                  25
_journal_year                    2006
_chemical_formula_sum            'C23 H52 B9 Hf N4 O'
_chemical_formula_weight         676.47
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 111.00(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.165(2)
_cell_length_b                   17.424(4)
_cell_length_c                   20.250(4)
_cell_measurement_temperature    293(2)
_cell_volume                     3348.4(14)
_computing_cell_refinement       'BIOTEX RIGAKU'
_computing_data_collection       'RAXIS-IIC RIGAKU'
_computing_data_reduction        'BIOTEX RIGAKU'
_computing_molecular_graphics    'SIEMENS SHELXTL'
_computing_publication_material  'SIEMENS SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.898
_diffrn_measured_fraction_theta_max 0.898
_diffrn_measurement_device_type  'RAXIS-IIC RIGAKU'
_diffrn_measurement_method       IP
_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  0.0617
_diffrn_reflns_av_sigmaI/netI    0.0636
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            9791
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.34
_exptl_absorpt_coefficient_mu    3.138
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6667
_exptl_absorpt_correction_type   ABSCOR
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.342
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1372
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.959
_refine_diff_density_min         -1.962
_refine_diff_density_rms         0.121
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.137
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     343
_refine_ls_number_reflns         5284
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.137
_refine_ls_R_factor_all          0.0567
_refine_ls_R_factor_gt           0.0547
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0598P)^2^+10.3774P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1487
_refine_ls_wR_factor_ref         0.1521
_reflns_number_gt                5163
_reflns_number_total             5284
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om060125ysi20060208_021615.cif
_cod_data_source_block           7a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        3348.7(12)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4075216