Observation of Redox-Induced Electron Transfer and Spin Crossover for Dinuclear Cobalt and Iron Complexes with the 2,5-Di-tert-butyl-3,6-dihydroxy-1,4-benzoquinonate Bridging Ligand
Kil Sik Min; Antonio G. DiPasquale; Arnold L. Rheingold; Henry S. White; Joel S. Miller; Journal of the American Chemical Society 131 (2009) 6229–6236; doi:10.1021/ja900909u

data_4104311
_publ_section_title
;
 Observation of Redox-Induced Electron Transfer and Spin Crossover for
 Dinuclear Cobalt and Iron Complexes with the
 2,5-Di-tert-butyl-3,6-dihydroxy-1,4-benzoquinonate Bridging Ligand
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6229
_journal_page_last               6236
_journal_paper_doi               10.1021/ja900909u
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         'C50 H54 Co2 N8 O4, 2(C2 H3 N), 3(B F4)'
_chemical_formula_sum            'C54 H60 B3 Co2 F12 N10 O4'
_chemical_formula_weight         1291.41
_chemical_name_systematic
;
  ?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 116.9640(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   24.120(2)
_cell_length_b                   15.4044(13)
_cell_length_c                   17.0578(14)
_cell_measurement_reflns_used    8881
_cell_measurement_temperature    208(2)
_cell_measurement_theta_max      28.30
_cell_measurement_theta_min      2.36
_cell_volume                     5648.9(8)
_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      208(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.928
_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  0.0252
_diffrn_reflns_av_sigmaI/netI    0.0360
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            14678
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    0.683
_exptl_absorpt_correction_T_max  0.9045
_exptl_absorpt_correction_T_min  0.7487
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.518
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             2652
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.542
_refine_diff_density_min         -0.329
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     389
_refine_ls_number_reflns         6521
_refine_ls_number_restraints     19
_refine_ls_restrained_S_all      1.147
_refine_ls_R_factor_all          0.0642
_refine_ls_R_factor_gt           0.0550
_refine_ls_shift/su_max          0.018
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0706P)^2^+10.4233P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1375
_refine_ls_wR_factor_ref         0.1428
_reflns_number_gt                5644
_reflns_number_total             6521
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja900909u_si_002.cif
_cod_data_source_block           jsm128
_cod_database_code               4104311