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_7702784
_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            'C6 H4 B2 O4'
_chemical_formula_weight         161.71
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P b c a'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.416(2)
_cell_length_b                   5.2697(11)
_cell_length_c                   12.231(2)
_cell_measurement_reflns_used    6611
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.51
_cell_measurement_theta_min      2.91
_cell_volume                     671.3(2)
_computing_cell_refinement       'DENZO, COLLECT'
_computing_data_reduction        'DENZO, COLLECT'
_computing_molecular_graphics    'CAMERON (Watkin, Pearce 1995)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Nonius KappaCCD Area Detector'
_diffrn_measurement_method       'Phi and Omega scans to fill Ewald Sphere'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0363
_diffrn_reflns_av_sigmaI/netI    0.0215
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6589
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.33
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_T_max  0.9842
_exptl_absorpt_correction_T_min  0.9687
_exptl_absorpt_correction_type   multi-scans
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.600
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.186
_refine_diff_density_min         -0.222
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.991
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     63
_refine_ls_number_reflns         768
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.991
_refine_ls_R_factor_all          0.0419
_refine_ls_R_factor_gt           0.0367
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0705P)^2^+0.2010P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1007
_refine_ls_wR_factor_ref         0.1065
_reflns_number_gt                676
_reflns_number_total             768
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b200695m.txt
_cod_data_source_block           226
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7702784