Effect of N4-Substituent Choice on Spin Crossover in Dinuclear Iron(II) Complexes of Bis-Terdentate 1,2,4-Triazole-Based Ligands
Jonathan A. Kitchen; Juan Olguín; Rafal Kulmaczewski; Nicholas G. White; Victoria A. Milway; Guy N. L. Jameson; Jeffery L. Tallon; Sally Brooker; Inorganic Chemistry 52 (2013) 11185–11199; doi:10.1021/ic4014416

data_4336206
_publ_section_title
;
 Effect of N4-Substituent Choice on Spin Crossover in Dinuclear Iron(II)
 Complexes of Bis-Terdentate 1,2,4-Triazole-Based Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              11185
_journal_page_last               11199
_journal_paper_doi               10.1021/ic4014416
_journal_volume                  52
_journal_year                    2013
_chemical_formula_sum            'C50 H56 B4 F16 Fe2 N16'
_chemical_formula_weight         1340.05
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 97.764(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.7234(11)
_cell_length_b                   20.7579(13)
_cell_length_c                   10.1221(8)
_cell_measurement_reflns_used    3745
_cell_measurement_temperature    91(2)
_cell_measurement_theta_max      20.371
_cell_measurement_theta_min      2.2555
_cell_volume                     2857.0(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      91(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker Kappa Apex II area detector'
_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  0.1101
_diffrn_reflns_av_sigmaI/netI    0.0652
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            41744
_diffrn_reflns_theta_full        24.11
_diffrn_reflns_theta_max         24.11
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    0.613
_exptl_absorpt_correction_T_max  0.9246
_exptl_absorpt_correction_T_min  0.9191
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SCALE (Bruker AXS Inc.)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.558
_exptl_crystal_description       block
_exptl_crystal_F_000             1368
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.859
_refine_diff_density_min         -0.593
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     448
_refine_ls_number_reflns         4537
_refine_ls_number_restraints     45
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.1066
_refine_ls_R_factor_gt           0.0744
_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^)+(0.0710P)^2^+10.0349P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1673
_refine_ls_wR_factor_ref         0.1901
_reflns_number_gt                3318
_reflns_number_total             4537
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic4014416_si_002_7.cif
_cod_data_source_block           jak542_89
_cod_database_code               4336206