Rationally designed two-photon absorption compounds based on benzoxazole derivatives: structure–property relationships and bio-imaging applications
Ge, Xinping; Gan, Xiaoping; Yao, Shun; Wang, Kang; Zhu, Weiju; Yu, Jianhua; Wu, Jieying; Tian, Yupeng; Zhou, Hongping; Journal of Materials Chemistry B 4 (2016) 2785–; doi:10.1039/C6TB00201C

data_7236421
_publ_section_title
;
 Rationally designed two-photon absorption compounds based on benzoxazole
 derivatives: structure--property relationships and bio-imaging
 applications
;
_journal_issue                   16
_journal_name_full               'Journal of Materials Chemistry B'
_journal_page_first              2785
_journal_paper_doi               10.1039/C6TB00201C
_journal_volume                  4
_journal_year                    2016
_chemical_formula_sum            'C25 H24 N2 O'
_chemical_formula_weight         368.46
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-08-18 deposited with the CCDC.
2016-03-22 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.589(2)
_cell_length_b                   9.368(3)
_cell_length_c                   28.167(8)
_cell_measurement_temperature    296(2)
_cell_volume                     2002.5(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0531
_diffrn_reflns_av_sigmaI/netI    0.0519
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            14162
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.29
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.9852
_exptl_absorpt_correction_T_min  0.9779
_exptl_crystal_density_diffrn    1.222
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.665
_refine_diff_density_min         -0.582
_refine_diff_density_rms         0.054
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -3(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     255
_refine_ls_number_reflns         3519
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.1291
_refine_ls_R_factor_gt           0.0829
_refine_ls_shift/su_max          0.011
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0928P)^2^+2.0035P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2126
_refine_ls_wR_factor_ref         0.2426
_reflns_number_gt                2146
_reflns_number_total             3519
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6tb00201c2.cif
_cod_data_source_block           a
_cod_database_code               7236421