Linking of metal centres through boryl ligands: synthesis, spectroscopic and structural characterisation of symmetrically bridged boryl complexes
Aldridge, Simon; Calder, Richard J.; Rossin, Andrea; Dickinson, Anthony A.; Willock, David J.; Jones, Cameron; Evans, David J.; Steed, Jonathan W.; Light, Mark E.; Coles, Simon J.; Hursthouse, Michael B.; Journal of the Chemical Society, Dalton Transactions  (2002) 2020–; doi:10.1039/b200695m

data_7702787
_publ_section_title
;
 Linking of metal centres through boryl ligands: synthesis, spectroscopic
 and structural characterisation of symmetrically bridged boryl complexes
;
_journal_issue                   9
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              2020
_journal_paper_doi               10.1039/b200695m
_journal_year                    2002
_chemical_formula_sum            'C20 H12 B2 Fe2 O8'
_chemical_formula_weight         513.62
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_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                 93.604(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.4542(3)
_cell_length_b                   12.2543(4)
_cell_length_c                   12.4180(6)
_cell_measurement_temperature    100(2)
_cell_volume                     980.22(7)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'XSeed (Barbour, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       '2o phi+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  0.0340
_diffrn_reflns_av_sigmaI/netI    0.0373
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6704
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.57
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.528
_exptl_absorpt_correction_T_max  0.8032
_exptl_absorpt_correction_T_min  0.6570
_exptl_absorpt_correction_type   Scalepack
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.740
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             516
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.331
_refine_diff_density_min         -0.255
_refine_diff_density_rms         0.060
_refine_ls_extinction_coef       0.0030(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     170
_refine_ls_number_reflns         2243
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0315
_refine_ls_R_factor_gt           0.0257
_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^)+(0.0147P)^2^+0.6970P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0582
_refine_ls_wR_factor_ref         0.0605
_reflns_number_gt                1983
_reflns_number_total             2243
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b200695m.txt
_cod_data_source_block           sa1
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7702787