Emission color-tunable oxazol(in)yl-substituted excited-state intramolecular proton transfer (ESIPT)-based luminophores.
Göbel, Dominik; Rusch, Pascal; Duvinage, Daniel; Bigall, Nadja C.; Nachtsheim, Boris J.; Chemical communications (Cambridge, England) 56 (2020) 15430–15433; doi:10.1039/d0cc05780k

data_7127647
_publ_section_title
;
 Emission color-tunable oxazol(in)yl-substituted excited-state
 intramolecular proton transfer (ESIPT)-based luminophores.
;
_journal_issue                   98
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              15430
_journal_page_last               15433
_journal_paper_doi               10.1039/d0cc05780k
_journal_volume                  56
_journal_year                    2020
_chemical_formula_moiety         'C20 H20 Br N O2'
_chemical_formula_sum            'C20 H20 Br N O2'
_chemical_formula_weight         386.28
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2020-06-21
_audit_creation_method
;
Olex2 1.3-dev
(compiled 2020.03.26 svn.re84ffbc8 for OlexSys, GUI svn.r6014)
;
_audit_update_record
;
2020-07-21 deposited with the CCDC.	2020-11-10 downloaded from the CCDC.
;
_cell_angle_alpha                83.018(2)
_cell_angle_beta                 89.376(2)
_cell_angle_gamma                82.190(2)
_cell_formula_units_Z            8
_cell_length_a                   9.6343(2)
_cell_length_b                   19.0413(5)
_cell_length_c                   19.4763(5)
_cell_measurement_reflns_used    9959
_cell_measurement_temperature    100.0
_cell_measurement_theta_max      28.26
_cell_measurement_theta_min      2.37
_cell_volume                     3513.47(15)
_computing_molecular_graphics    'Olex2 1.3-dev (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3-dev (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2016/4 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.0
_diffrn_detector                 'Bruker PHOTON area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CMOS area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Venture PHOTON area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0727
_diffrn_reflns_av_unetI/netI     0.0411
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            85212
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.000
_diffrn_reflns_theta_min         2.260
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.351
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6389
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1088 before and 0.0699 after correction.
The Ratio of minimum to maximum transmission is 0.8568.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.461
_exptl_crystal_description       block
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.21
_refine_diff_density_max         1.710
_refine_diff_density_min         -1.039
_refine_diff_density_rms         0.117
_refine_ls_extinction_coef       0.00047(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/4 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.240
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     886
_refine_ls_number_reflns         12379
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.240
_refine_ls_R_factor_all          0.0815
_refine_ls_R_factor_gt           0.0698
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0223P)^2^+27.5138P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1465
_refine_ls_wR_factor_ref         0.1510
_reflns_Friedel_coverage         0.000
_reflns_number_gt                10719
_reflns_number_total             12379
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0cc05780k2.cif
_cod_data_source_block           goebeld180319_0m
_cod_database_code               7127647
_shelx_shelxl_version_number     2016/4
_shelx_estimated_absorpt_t_max   0.638
_shelx_estimated_absorpt_t_min   0.602
_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, All O(H) groups
2.a Secondary CH2 refined with riding coordinates:
 C13(H13A,H13B), C53(H53A,H53B), C73(H73A,H73B), C33(H33A,H33B)
2.b Aromatic/amide H refined with riding coordinates:
 C1(H1A), C4(H4), C5(H5), C6(H6), C8(H8), C21(H21), C66(H66), C68(H68),
 C28(H28), C25(H25), C64(H64), C24(H24), C44(H44), C61(H61), C48(H48), C65(H65),
  C26(H26), C46(H46), C45(H45), C41(H41)
2.c Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C11(H11A,H11B,H11C), C15(H15A,H15B,H15C), C16(H16A,H16B,
 H16C), C31(H31A,H31B,H31C), C76(H76A,H76B,H76C), C55(H55A,H55B,H55C), C75(H75A,
 H75B,H75C), C35(H35A,H35B,H35C), C36(H36A,H36B,H36C), C56(H56A,H56B,H56C),
 C70(H70A,H70B,H70C), C51(H51A,H51B,H51C), C30(H30A,H30B,H30C), C71(H71A,H71B,
 H71C), C50(H50A,H50B,H50C)
2.d Idealised tetrahedral OH refined as rotating group:
 O1(H1), O3(H3), O7(H7), O5(H5A)
;
_shelx_res_checksum              84637
_olex2_submission_special_instructions 'No special instructions were received'