Electronic Structure and Slow Magnetic Relaxation of Low-Coordinate Cyclic Alkyl(amino) Carbene Stabilized Iron(I) Complexes.
Samuel, Prinson P.; Mondal, Kartik Chandra; Amin Sk, Nurul; Roesky, Herbert W.; Carl, Elena; Neufeld, Roman; Stalke, Dietmar; Demeshko, Serhiy; Meyer, Franc; Ungur, Liviu; Chibotaru, Liviu F.; Christian, Jonathan; Ramachandran, Vasanth; van Tol, Johan; Dalal, Naresh S.; Journal of the American Chemical Society 136 (2014) 11964–; doi:10.1021/ja5043116

data_4122372
_publ_section_title
;
 Electronic Structure and Slow Magnetic Relaxation of Low-Coordinate
 Cyclic Alkyl(amino) Carbene Stabilized Iron(I) Complexes.
;
_journal_issue                   34
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11964
_journal_paper_doi               10.1021/ja5043116
_journal_volume                  136
_journal_year                    2014
_chemical_formula_moiety         'C40 H62 Cl2 Fe N2'
_chemical_formula_sum            'C40 H62 Cl2 Fe N2'
_chemical_formula_weight         697.66
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 108.58(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.173(2)
_cell_length_b                   17.403(2)
_cell_length_c                   17.237(2)
_cell_measurement_reflns_used    9978
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.903
_cell_measurement_theta_min      2.341
_cell_volume                     3745.6(9)
_computing_cell_refinement       'SAINT V7.68A'
_computing_data_collection       'APEX2 v2012.2'
_computing_data_reduction        'SAINT V7.68A'
_computing_molecular_graphics    'XSHELL in SHELXTL-97'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-2012 (Sheldrick, 2012)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Smart APEX II Ultra'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0622
_diffrn_reflns_av_unetI/netI     0.0267
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            107288
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.029
_diffrn_reflns_theta_min         1.631
_diffrn_source                   'rotating anode'
_exptl_absorpt_coefficient_mu    0.575
_exptl_absorpt_correction_T_max  0.7453
_exptl_absorpt_correction_T_min  0.6894
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS-2012/1
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.237
_exptl_crystal_description       block
_exptl_crystal_F_000             1504
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.373
_refine_diff_density_min         -0.325
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     422
_refine_ls_number_reflns         7385
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0431
_refine_ls_R_factor_gt           0.0317
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0325P)^2^+2.4952P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0715
_refine_ls_wR_factor_ref         0.0764
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6136
_reflns_number_total             7385
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja5043116_si_001.cif
_cod_data_source_block           sad_a
_cod_depositor_comments
'Adding full bibliography for 4122372--4122374.cif.'
_cod_database_code               4122372
_shelxl_version_number           2013-4
_shelx_res_checksum              93360
_shelx_hkl_checksum              18148