Non-conjugated alkyl chain engineering to tune condensed state photophysical and supramolecular assembly properties.
Meher, Niranjan; Khatun, Mst Nasima; Parui, Retwik; Iyer, Parameswar Krishnan; Nanoscale 17 (2025) 6685–6694; doi:10.1039/d5nr00163c

data_1573862
_publ_section_title
;
 Non-conjugated alkyl chain engineering to tune condensed state
 photophysical and supramolecular assembly properties.
;
_journal_issue                   11
_journal_name_full               Nanoscale
_journal_page_first              6685
_journal_page_last               6694
_journal_paper_doi               10.1039/d5nr00163c
_journal_volume                  17
_journal_year                    2025
_chemical_formula_sum            'C16 H15 N O2'
_chemical_formula_weight         253.29
_space_group_crystal_system      orthorhombic
_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
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2024-07-30 deposited with the CCDC.	2025-02-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.7154(10)
_cell_length_b                   12.531(3)
_cell_length_c                   22.215(4)
_cell_measurement_reflns_used    4650
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      19.59
_cell_measurement_theta_min      2.45
_cell_volume                     1312.7(5)
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0876
_diffrn_reflns_av_unetI/netI     0.0409
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            42762
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        24.990
_diffrn_reflns_theta_max         24.990
_diffrn_reflns_theta_min         1.833
_exptl_absorpt_coefficient_mu    0.085
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.282
_exptl_crystal_description       Block
_exptl_crystal_F_000             536
_refine_diff_density_max         0.118
_refine_diff_density_min         -0.149
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details
;
 Flack x determined using 594 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -2.1(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     173
_refine_ls_number_reflns         2319
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0647
_refine_ls_R_factor_gt           0.0471
_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^)+(0.0500P)^2^+0.2779P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1090
_refine_ls_wR_factor_ref         0.1213
_reflns_Friedel_coverage         0.666
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                1805
_reflns_number_total             2319
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5nr00163c2.cif
_cod_data_source_block           NC-4_0m_a
_cod_depositor_comments
'Adding full bibliography for 1573856--1573862.cif.'
_cod_database_code               1573862
_shelx_shelxl_version_number     2016/6
_shelx_res_checksum              30313
_shelx_hkl_checksum              68149