Slow Magnetic Relaxation in a Family of trigonal Pyramidal Iron(II) Pyrrolide Complexes
W. Hill Harman; T. David Harris; Danna E. Freedman; Henry Fong; Alicia Chang; Jeffrey D. Rinehart; Andrew Ozarowski; Moulay T. Sougrati; Fernande Grandjean; Gary J. Long; Jeffrey R. Long; Christopher J. Chang; Journal of the American Chemical Society 132 (2010) 18115–18126; doi:10.1021/ja105291x

data_4103710
_publ_section_title
;
 Slow Magnetic Relaxation in a Family of trigonal Pyramidal Iron(II)
 Pyrrolide Complexes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              18115
_journal_page_last               18126
_journal_paper_doi               10.1021/ja105291x
_journal_volume                  132
_journal_year                    2010
_chemical_formula_moiety         'C16 H40 K O8, C33 H21 F6 Fe N4'
_chemical_formula_sum            'C49 H61 F6 Fe K N4 O8'
_chemical_formula_weight         1042.97
_chemical_name_common            '[K(DME{4)][tpaDFPFe]'
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                   13.467(2)
_cell_length_b                   18.827(4)
_cell_length_c                   20.082(4)
_cell_measurement_reflns_used    3848
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      19.2
_cell_measurement_theta_min      2.2
_cell_volume                     5091.7(17)
_computing_cell_refinement       'Bruker APEX2 v. 2009.3'
_computing_data_collection       'Bruker APEX2 v. 2009.3'
_computing_data_reduction        'Bruker APEX2 v. 2009.3'
_computing_molecular_graphics    ORTEP-32
_computing_publication_material  CIFTAB
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEX-I CCD'
_diffrn_measurement_method       '\f and \w 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  0.0609
_diffrn_reflns_av_sigmaI/netI    0.0837
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            33040
_diffrn_reflns_theta_full        26.41
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_min         2.12
_exptl_absorpt_coefficient_mu    0.455
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.885
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, 1995'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.361
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             2184
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.418
_refine_diff_density_min         -0.224
_refine_diff_density_rms         0.053
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.003(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.976
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     630
_refine_ls_number_reflns         10400
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.976
_refine_ls_R_factor_all          0.0864
_refine_ls_R_factor_gt           0.0480
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0454P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0922
_refine_ls_wR_factor_ref         0.1042
_reflns_number_gt                7072
_reflns_number_total             10400
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja105291x_si_004.cif
_cod_data_source_block           shelxl
_cod_original_cell_volume        5091.7(16)
_cod_database_code               4103710