NH Tautomerism of N-Confused Porphyrin: Solvent/Substituent Effects and Isomerization Mechanism.
Ishizuka, Tomoya; Sakashita, Ryuichi; Iwanaga, Osamu; Morimoto, Tatsuki; Mori, Shigeki; Ishida, Masatoshi; Toganoh, Motoki; Takegoshi, Kiyonori; Osuka, Atsuhiro; Furuta, Hiroyuki; The journal of physical chemistry. A  (2020) –; doi:10.1021/acs.jpca.0c04779

data_1558473
_publ_section_title
;
 NH Tautomerism of N-Confused Porphyrin: Solvent/Substituent Effects and
 Isomerization Mechanism.
;
_journal_name_full               'The journal of physical chemistry. A'
_journal_paper_doi               10.1021/acs.jpca.0c04779
_journal_year                    2020
_chemical_formula_moiety         'C48 H38 N4'
_chemical_formula_sum            'C48 H38 N4'
_chemical_formula_weight         670.82
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2016/6
_cell_angle_alpha                90
_cell_angle_beta                 95.333(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   14.3901(5)
_cell_length_b                   8.4196(3)
_cell_length_c                   15.7484(6)
_cell_measurement_reflns_used    13731
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.80
_cell_volume                     1899.80(12)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'CrystalStructure 4.2.4 (Rigaku, 2016)'
_computing_publication_material  'CrystalStructure 4.2.4'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SIR92 (Altomare, et al., 1994)'
_diffrn_ambient_temperature      123(2)
_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           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.039
_diffrn_reflns_av_unetI/netI     0.0422
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_number            3725
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.240
_diffrn_reflns_theta_max         25.998
_diffrn_reflns_theta_min         2.598
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_T_max  0.993
_exptl_absorpt_correction_T_min  0.770
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Rigaku, 1995)'
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.173
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             708
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.405
_refine_diff_density_min         -0.269
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.957
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         3725
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.957
_refine_ls_R_factor_all          0.0989
_refine_ls_R_factor_gt           0.0624
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1167P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1622
_refine_ls_wR_factor_ref         0.1834
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2201
_reflns_number_total             3725
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jp0c04779_si_005.cif
_cod_data_source_block           shelxl
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1558473
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.980
_shelx_estimated_absorpt_t_max   0.993
_shelx_res_checksum              3563
_shelx_hkl_checksum              82513