New Family of Ferric Spin Clusters Incorporating Redox-Activeortho-Dioxolene Ligands
Yanyan Mulyana; Ayman Nafady; Arindam Mukherjee; Roland Bircher; Boujemaa Moubaraki; Keith S. Murray; Alan M. Bond; Brendan F. Abrahams; Colette Boskovic; Inorganic Chemistry 48 (2009) 7765–7781; doi:10.1021/ic900729d

data_4302940
_publ_section_title
;
New Family of Ferric Spin Clusters Incorporating
Redox-Activeortho-Dioxolene Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7765
_journal_page_last               7781
_journal_paper_doi               10.1021/ic900729d
_journal_volume                  48
_journal_year                    2009
_chemical_formula_sum            'C56 H62 Cl12 Fe2 N4 O8'
_chemical_formula_weight         1456.20
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_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                 115.828(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.315(3)
_cell_length_b                   18.744(2)
_cell_length_c                   19.976(3)
_cell_measurement_temperature    130(2)
_cell_volume                     6172.6(15)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      130(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0982
_diffrn_reflns_av_sigmaI/netI    0.0784
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            28171
_diffrn_reflns_theta_full        73.40
_diffrn_reflns_theta_max         73.40
_diffrn_reflns_theta_min         4.96
_exptl_absorpt_coefficient_mu    9.013
_exptl_absorpt_correction_T_max  0.5325
_exptl_absorpt_correction_T_min  0.1231
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   ABSPACK
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    1.567
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2984
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.674
_refine_diff_density_min         -0.872
_refine_diff_density_rms         0.149
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.077
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     739
_refine_ls_number_reflns         12069
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.077
_refine_ls_R_factor_all          0.0837
_refine_ls_R_factor_gt           0.0705
_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^)+(0.1049P)^2^+15.3282P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1802
_refine_ls_wR_factor_ref         0.1924
_reflns_number_gt                9910
_reflns_number_total             12069
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic900729d_si_001_7.cif
_cod_data_source_block           compound_8
_cod_database_code               4302940