Building Strain with Large Macrocycles and Using It To Tune the Thermal Half-Lives of Hydrazone Photochromes.
Li, Quan; Qian, Hai; Shao, Baihao; Hughes, Russell P.; Aprahamian, Ivan; Journal of the American Chemical Society 140 (2018) 11829–11835; doi:10.1021/jacs.8b07612

data_4132964
_publ_section_title
;
 Building Strain with Large Macrocycles and Using It To Tune the Thermal
 Half-Lives of Hydrazone Photochromes.
;
_journal_issue                   37
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11829
_journal_page_last               11835
_journal_paper_doi               10.1021/jacs.8b07612
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C21 H22 N2 O5'
_chemical_formula_sum            'C21 H22 N2 O5'
_chemical_formula_weight         382.40
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_audit_creation_date             2018-06-21
_audit_creation_method
;
Olex2 1.2-alpha
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 102.8935(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.12200(10)
_cell_length_b                   11.03000(10)
_cell_length_c                   16.3913(2)
_cell_measurement_reflns_used    8581
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      72.19
_cell_measurement_theta_min      2.77
_cell_volume                     1960.11(3)
_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
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
'SHELXL (Sheldrick, Acta Cryst. A64 2008, 112-122)'
_computing_structure_solution
'SHELXT (Sheldrick, G.M. (2015). Acta Cryst. A71, 3-8)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 8.36
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w and \f'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0275
_diffrn_reflns_av_unetI/netI     0.0240
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            14629
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         72.185
_diffrn_reflns_theta_min         4.388
_diffrn_source                   'sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.769
_exptl_absorpt_correction_T_max  0.7536
_exptl_absorpt_correction_T_min  0.6717
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2012/1 (Bruker,2012) was used for absorption correction. wR2(int) was 0.0485 before and 0.0419 after correction. The Ratio of minimum to maximum transmission is 0.8913. The \l/2 correction factor is 0.0015.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_description       Block
_exptl_crystal_F_000             808
_exptl_crystal_preparation       'Needles cut.'
_exptl_crystal_recrystallization_method 'used as received'
_exptl_crystal_size_max          0.352
_exptl_crystal_size_mid          0.247
_exptl_crystal_size_min          0.214
_refine_diff_density_max         0.419
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     257
_refine_ls_number_reflns         3859
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0457
_refine_ls_R_factor_gt           0.0404
_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^)+(0.0492P)^2^+0.6676P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1030
_refine_ls_wR_factor_ref         0.1073
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3413
_reflns_number_total             3859
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b07612_si_012.cif
_cod_data_source_block           ia618a
_cod_database_code               4132964
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.853
_shelx_estimated_absorpt_t_min   0.774
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C9(H9A,H9B), C10(H10A,H10B), C11(H11A,H11B), C12(H12A,H12B),
 C13(H13A,H13B)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5), C6(H6), C17(H17), C18(H18), C19(H19), C20(H20),
 C21(H21)
;
_shelx_res_checksum              15502
_shelx_hkl_checksum              97847
_contact_crystallographer_email  xraystaples@crystalspec.com
_contact_crystallographer_name   'Richard Staples'
_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 lq-CO7E
_olex2_submission_special_instructions 'No special instructions were received'