Synthesis and reactivity of iron–dinitrogen complexes bearing anionic methyl- and phenyl-substituted pyrrole-based PNP-type pincer ligands toward catalytic nitrogen fixation
Sekiguchi, Yoshiya; Kuriyama, Shogo; Eizawa, Aya; Arashiba, Kazuya; Nakajima, Kazunari; Nishibayashi, Yoshiaki; Chem. Commun.  (2017) –; doi:10.1039/C7CC06987A

data_7120788
_publ_section_title
;
 Synthesis and reactivity of iron--dinitrogen complexes bearing anionic
 methyl- and phenyl-substituted pyrrole-based PNP-type pincer ligands
 toward catalytic nitrogen fixation
;
_journal_name_full               'Chem. Commun.'
_journal_paper_doi               10.1039/C7CC06987A
_journal_year                    2017
_chemical_absolute_configuration 'CHOOSE rm ad rmad syn or unk'
_chemical_formula_moiety         'C34 H50 Fe N3 P2'
_chemical_formula_sum            'C34 H50 Fe N3 P2'
_chemical_formula_weight         618.58
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_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_update_record
;
2017-09-02 deposited with the CCDC.
2017-10-16 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 90.0000
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   11.3469(15)
_cell_length_b                   12.4305(17)
_cell_length_c                   23.789(3)
_cell_measurement_reflns_used    6467
_cell_measurement_temperature    296
_cell_measurement_theta_max      27.41
_cell_measurement_theta_min      3.04
_cell_volume                     3355.4(8)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO (Rigaku, ????)'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'CrystalStructure 4.2.2'
_computing_publication_material  'CrystalStructure 4.2.2 (Rigaku, 2016)'
_computing_structure_refinement  'SHELXL Version 2016/6 (Sheldrick, 2008)'
_computing_structure_solution    SIR97
_diffrn_ambient_temperature      296
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.1032
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            32962
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.469
_diffrn_reflns_theta_min         3.047
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.571
_exptl_absorpt_correction_T_max  0.994
_exptl_absorpt_correction_T_min  0.500
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Rigaku, 1995)'
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.224
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             1324.00
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.37
_refine_diff_density_min         -0.48
_refine_ls_abs_structure_details
;
 Flack x determined using 1694 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.000(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     361
_refine_ls_number_reflns         7653
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0867
_refine_ls_R_factor_gt           0.0539
_refine_ls_shift/su_max          0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0505P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1119
_refine_ls_wR_factor_ref         0.1271
_reflns_Friedel_coverage         0.789
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.995
_reflns_number_gt                5280
_reflns_number_total             7653
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            c7cc06987a2.cif
_cod_data_source_block           FePh-PNPN2
_cod_database_code               7120788
_shelx_res_checksum              67083