Precise peripheral design enables propeller-like squaraine dye with highly sensitive and wide-range piezochromism.
Guo, Weihan; Wang, Mingda; Si, Leilei; Wang, Yigang; Xia, Guomin; Wang, Hongming; Chemical science 14 (2023) 6348–6354; doi:10.1039/d3sc01730c

data_1569192
_publ_section_title
;
 Precise peripheral design enables propeller-like squaraine dye with
 highly sensitive and wide-range piezochromism.
;
_journal_issue                   23
_journal_name_full               'Chemical science'
_journal_page_first              6348
_journal_page_last               6354
_journal_paper_doi               10.1039/d3sc01730c
_journal_volume                  14
_journal_year                    2023
_chemical_formula_moiety         '0.065(C36 H40 N6 O2)'
_chemical_formula_sum            'C36 H40 N6 O2'
_chemical_formula_weight         588.74
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_block_doi                 10.5517/ccdc.csd.cc2fgn8v
_audit_creation_date             2023-02-22
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6408)
;
_audit_update_record
;
2023-03-14 deposited with the CCDC.	2023-05-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 114.529(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   22.5871(9)
_cell_length_b                   6.0324(2)
_cell_length_c                   25.2819(10)
_cell_measurement_reflns_used    4737
_cell_measurement_temperature    200.0
_cell_measurement_theta_max      73.3470
_cell_measurement_theta_min      3.7940
_cell_volume                     3133.9(2)
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      200.0
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.954
_diffrn_measurement_device_type  'multiwire proportional'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0190
_diffrn_reflns_av_unetI/netI     0.0213
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.954
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            9535
_diffrn_reflns_point_group_measured_fraction_full 0.999
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_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         75.561
_diffrn_reflns_theta_min         3.844
_exptl_absorpt_coefficient_mu    0.627
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.65672
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.248
_exptl_crystal_description       needle
_exptl_crystal_F_000             1256
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.186
_refine_diff_density_min         -0.182
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         3109
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_refine_ls_R_factor_all          0.0556
_refine_ls_R_factor_gt           0.0461
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0613P)^2^+1.4593P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1219
_refine_ls_wR_factor_ref         0.1279
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2575
_reflns_number_total             3258
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3sc01730c2.cif
_cod_data_source_block           nme-1
_cod_depositor_comments
'Adding full bibliography for 1569190--1569193.cif.'
_cod_database_code               1569192
_shelx_shelxl_version_number     2018/3
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C5(H5), C6(H6), C8(H8), C9(H9), C11(H11), C12(H12)
2.b Idealised Me refined as rotating group:
 C15(H15A,H15B,H15C), C16(H16A,H16B,H16C), C17(H17A,H17B,H17C), C18(H18A,H18B,
 H18C)
;
_shelx_res_checksum              14412
_shelx_hkl_checksum              29071
_olex2_submission_special_instructions 'No special instructions were received'