Structure Property Analysis of the Solution and Solid-State Properties of Bistable Photochromic Hydrazones.
Shao, Baihao; Qian, Hai; Li, Quan; Aprahamian, Ivan; Journal of the American Chemical Society 141 (2019) 8364–8371; doi:10.1021/jacs.9b03932

data_4127244
_publ_section_title
;
 Structure Property Analysis of the Solution and Solid-State Properties of
 Bistable Photochromic Hydrazones.
;
_journal_issue                   20
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8364
_journal_page_last               8371
_journal_paper_doi               10.1021/jacs.9b03932
_journal_volume                  141
_journal_year                    2019
_chemical_formula_moiety         'C18 H20 N4 O4'
_chemical_formula_sum            'C18 H20 N4 O4'
_chemical_formula_weight         356.38
_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   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2018-03-29
_audit_creation_method
;
Olex2 1.2-alpha
(compiled 2018.03.09 svn.r3491 for OlexSys, GUI svn.r5480)
;
_cell_angle_alpha                90
_cell_angle_beta                 92.064(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.430(2)
_cell_length_b                   6.9255(11)
_cell_length_c                   15.304(2)
_cell_measurement_reflns_used    2380
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.17
_cell_measurement_theta_min      2.48
_cell_volume                     1740.3(4)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection       'COSMO (BRUKER, V1.61, 2009)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 8.36
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0680
_diffrn_reflns_av_unetI/netI     0.0669
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            13602
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.360
_diffrn_reflns_theta_min         2.481
_diffrn_source                   'sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6637
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0621 before and 0.0567 after correction. The Ratio of minimum to maximum transmission is 0.8906. The \l/2 correction factor is 0.00150.'
_exptl_crystal_colour            red
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.360
_exptl_crystal_description       plate
_exptl_crystal_F_000             752
_exptl_crystal_recrystallization_method 'used as received'
_exptl_crystal_size_max          0.181
_exptl_crystal_size_mid          0.164
_exptl_crystal_size_min          0.037
_refine_diff_density_max         0.212
_refine_diff_density_min         -0.207
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     242
_refine_ls_number_reflns         3194
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0993
_refine_ls_R_factor_gt           0.0524
_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^)+(0.0587P)^2^+0.4025P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1183
_refine_ls_wR_factor_ref         0.1466
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1886
_reflns_number_total             3194
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja9b03932_si_008.cif
_cod_data_source_block           ia318b
_cod_depositor_comments
'Adding full bibliography for 4127241--4127247.cif.'
_cod_original_cell_volume        1740.2(5)
_cod_database_code               4127244
_shelxl_version_number           2014/6
_shelx_estimated_absorpt_t_max   0.996
_shelx_estimated_absorpt_t_min   0.982
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C11(H11A,H11B)
2.b Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C7(H7), C8(H8), C14(H14), C15(H15), C17(H17), C18(H18)
2.c Idealised Me refined as rotating group:
 C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C12(H12A,H12B,H12C)
;
_olex2_diffrn_ambient_temperature_device 'Oxford Cryosystems'
_olex2_exptl_crystal_mounting_method
'The crystal was mounted on a nylon loop with paratone oil'
_olex2_submission_original_sample_id BHS-Hz-NCH3NO2
_olex2_submission_special_instructions 'No special instructions were received'