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_7120791
_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_formula_moiety         'C24 H46 Fe N3 P2'
_chemical_formula_sum            'C24 H46 Fe N3 P2'
_chemical_formula_weight         494.44
_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
_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                 106.780(8)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   7.9977(9)
_cell_length_b                   30.408(4)
_cell_length_c                   11.7607(14)
_cell_measurement_reflns_used    11132
_cell_measurement_temperature    173
_cell_measurement_theta_max      27.66
_cell_measurement_theta_min      3.06
_cell_volume                     2738.3(6)
_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      173
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.1219
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       39
_diffrn_reflns_limit_k_min       -39
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            24101
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.483
_diffrn_reflns_theta_min         3.061
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.682
_exptl_absorpt_correction_T_max  0.960
_exptl_absorpt_correction_T_min  0.324
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Rigaku, 1995)'
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.199
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1068.00
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.060
_refine_diff_density_max         1.57
_refine_diff_density_min         -1.12
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.999
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     285
_refine_ls_number_reflns         6281
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1585
_refine_ls_R_factor_gt           0.1180
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+43.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2636
_refine_ls_wR_factor_ref         0.2874
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4216
_reflns_number_total             6281
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            c7cc06987a2.cif
_cod_data_source_block           FeMe-PNPN2
_cod_original_cell_volume        2738.4(6)
_cod_database_code               7120791
_shelx_res_checksum              4808