Synthesis, structure, and reactivity of Group 4 metallacycles incorporating a Me2C-linked cyclopentadienyl-carboranyl ligand
Sit, Mei-Mei; Chan, Hoi-Shan; Xie, Zuowei; Dalton Transactions  (2008) 1454–1464; doi:10.1039/b716929a

data_7003533
_publ_section_title
;
 Synthesis, structure, and reactivity of Group 4 metallacycles
 incorporating a Me2C-linked cyclopentadienyl-carboranyl ligand
;
_journal_issue                   11
_journal_name_full               'Dalton Transactions'
_journal_page_first              1454
_journal_page_last               1464
_journal_paper_doi               10.1039/b716929a
_journal_year                    2008
_chemical_formula_sum            'C36 H80 B20 N8 Si2 Zr2'
_chemical_formula_weight         1079.90
_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                 101.213(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   15.7412(16)
_cell_length_b                   10.7205(12)
_cell_length_c                   16.2567(18)
_cell_measurement_reflns_used    809
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.68
_cell_measurement_theta_min      3.18
_cell_volume                     2691.0(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker 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 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0513
_diffrn_reflns_av_sigmaI/netI    0.0656
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            17992
_diffrn_reflns_theta_full        28.02
_diffrn_reflns_theta_max         28.02
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    0.469
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8721
_exptl_absorpt_correction_type   sadabs
_exptl_crystal_colour            pale-yellow
_exptl_crystal_density_diffrn    1.333
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1120
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.772
_refine_diff_density_min         -0.375
_refine_diff_density_rms         0.094
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         6500
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.0889
_refine_ls_R_factor_gt           0.0478
_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^)+(0.0701P)^2^+1.9010P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1172
_refine_ls_wR_factor_ref         0.1445
_reflns_number_gt                4257
_reflns_number_total             6500
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b716929a.txt
_cod_data_source_block           5b
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7003533