Bimetallic Zirconium Heterocycles Supported by Boron-Oxygen Ligands
Jessica E. Balkwill; Sarah C. Cole; Martyn P. Coles; Peter B. Hitchcock; Inorganic Chemistry 41 (2002) 3548–3552; doi:10.1021/ic0200848

data_4318166
_publ_section_title
;
 Bimetallic Zirconium Heterocycles Supported by Boron-Oxygen Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3548
_journal_page_last               3552
_journal_paper_doi               10.1021/ic0200848
_journal_volume                  41
_journal_year                    2002
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         '(C38 H42 B2 O4 Zr2).2(C1 H2 Cl2)'
_chemical_formula_sum            'C40 H46 B2 Cl4 O4 Zr2'
_chemical_formula_weight         936.63
_chemical_name_common            '[{Cp2Zr(O2BMes)}2].2(CH2Cl2}'
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/cifdics/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.1
_audit_creation_date             2000-11-20T17:12:32-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                69.285(2)
_cell_angle_beta                 87.880(3)
_cell_angle_gamma                76.756(3)
_cell_formula_units_Z            1
_cell_length_a                   9.0114(4)
_cell_length_b                   10.0372(5)
_cell_length_c                   12.5709(6)
_cell_measurement_reflns_used    4890
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      3.705
_cell_measurement_wavelength     0.71073
_cell_volume                     1034.02(9)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device       KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0416
_diffrn_reflns_av_unetI/netI     0.0628
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            9380
_diffrn_reflns_theta_full        30.02
_diffrn_reflns_theta_max         30.02
_diffrn_reflns_theta_min         3.91
_exptl_absorpt_coefficient_mu    0.801
_exptl_absorpt_correction_T_max  0.8176
_exptl_absorpt_correction_T_min  0.7894
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
          [c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.504
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             476
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.478
_refine_diff_density_min         -0.678
_refine_diff_density_rms         0.091
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     266
_refine_ls_number_reflns         6001
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0557
_refine_ls_R_factor_gt           0.0426
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0317P)^2^+0.7184P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0955
_refine_ls_wR_factor_ref         0.1024
_reflns_number_gt                5020
_reflns_number_total             6001
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0200848_2.cif
_cod_data_source_block           compound2
_cod_original_cell_volume        1034.02(8)
_cod_database_code               4318166