Construction of highly fluorescent N–O seven-membered heterocycles via thermo-oxidation of oxazolidines
Chen, Qiaonan; Liang, Xiao; Du, Jiahui; Wei, Zhonglin; Zhang, Yu-Mo; Zhang, Ting; Qin, Tianyou; Gao, Wenbin; Sheng, Lan; Zhang, Sean Xiao-An; Journal of Materials Chemistry C 7 (2019) 8045–; doi:10.1039/C9TC01199D

data_7237788
_publ_section_title
;
 Construction of highly fluorescent N--O seven-membered heterocycles via
 thermo-oxidation of oxazolidines
;
_journal_issue                   26
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              8045
_journal_paper_doi               10.1039/C9TC01199D
_journal_volume                  7
_journal_year                    2019
_chemical_formula_moiety         'C22 H24 N3 O3, I'
_chemical_formula_sum            'C22 H24 I N3 O3'
_chemical_formula_weight         505.34
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_block_doi                 10.5517/ccdc.csd.cc1pfpjb
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-07-14 deposited with the CCDC.	2019-07-10 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 100.21(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.4834(13)
_cell_length_b                   23.560(5)
_cell_length_c                   14.458(3)
_cell_measurement_reflns_used    17473
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.59
_cell_measurement_theta_min      2.99
_cell_volume                     2173.5(8)
_computing_cell_refinement       RAPID-AUTO
_computing_data_collection       'RAPID-AUTO (Rigaku Corporation, 1998)'
_computing_data_reduction
'CrystalStructure (Rigaku/MSC and Rigaku Corporation, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0276
_diffrn_reflns_av_sigmaI/netI    0.0249
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            19917
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    1.501
_exptl_absorpt_correction_T_max  0.8644
_exptl_absorpt_correction_T_min  0.8288
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.544
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1016
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.400
_refine_diff_density_min         -0.697
_refine_diff_density_rms         0.091
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.124
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     266
_refine_ls_number_reflns         4975
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.124
_refine_ls_R_factor_all          0.0405
_refine_ls_R_factor_gt           0.0320
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0311P)^2^+1.3048P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0724
_refine_ls_wR_factor_ref         0.0774
_reflns_number_gt                4126
_reflns_number_total             4975
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c9tc01199d2.cif
_cod_data_source_block           cqn1023
_cod_original_cell_volume        2173.4(8)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7237788