Ligand Effects on the Ferro- to Antiferromagnetic Exchange Ratio in Bis(o-Semiquinonato)copper(II)
Victor I. Ovcharenko; Elena V. Gorelik; Sergey V. Fokin; Galina V. Romanenko; Vladimir N. Ikorskii; Anna V. Krashilina; Vladimir K. Cherkasov; Gleb A. Abakumov; Journal of the American Chemical Society 129 (2007) 10512–10521; doi:10.1021/ja072463b

data_4109819
_publ_section_title
;
 Ligand Effects on the Ferro- to Antiferromagnetic Exchange Ratio in
 Bis(o-Semiquinonato)copper(II)
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10512
_journal_page_last               10521
_journal_paper_doi               10.1021/ja072463b
_journal_volume                  129
_journal_year                    2007
_chemical_formula_moiety         'Cu(C10 H10 O2)2 (N (C2 H2)3 N)'
_chemical_formula_sum            'C34 H52 Cu N2 O4'
_chemical_formula_weight         616.32
_chemical_name_systematic
; 
[bis(3,6-di-tert-butyl-o-benzosemiquinonato)
(1,4-diazabicyclo(2,2,2)octane)copper(II)] 
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 126.653(17)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   19.725(12)
_cell_length_b                   7.996(4)
_cell_length_c                   13.812(10)
_cell_measurement_reflns_used    1287
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      22.09
_cell_measurement_theta_min      2.57
_cell_volume                     1747.7(19)
_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 0.991
_diffrn_measured_fraction_theta_max 0.991
_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  0.1222
_diffrn_reflns_av_sigmaI/netI    0.1248
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6591
_diffrn_reflns_theta_full        23.49
_diffrn_reflns_theta_max         23.49
_diffrn_reflns_theta_min         1.84
_exptl_absorpt_coefficient_mu    0.661
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.171
_exptl_crystal_density_meas      0
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             662
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.266
_refine_diff_density_min         -0.309
_refine_diff_density_rms         0.055
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(3)
_refine_ls_extinction_coef       0.0000(6)
_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   0.969
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         2538
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.969
_refine_ls_R_factor_all          0.1014
_refine_ls_R_factor_gt           0.0654
_refine_ls_shift/su_max          1.914
_refine_ls_shift/su_mean         0.023
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0512P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1258
_refine_ls_wR_factor_ref         0.1405
_reflns_number_gt                1648
_reflns_number_total             2538
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja072463bsi20070522_080040_5.cif
_cod_data_source_block           nn2
_cod_database_code               4109819