Violet Anthraquinone for Expanding the Color Palette of Electrochromes with Three Discrete Colors and Full Color Bleaching
Ilies Seddiki; Thierry Maris; William G. Skene; molecules 31 (2026) 879–; doi:10.3390/molecules31050879

data_1577062
_publ_contact_author_id_orcid    0000-0001-9731-4046
_publ_section_title
;
 Violet Anthraquinone for Expanding the Color Palette of Electrochromes
 with Three Discrete Colors and Full Color Bleaching
;
_journal_name_full               molecules
_journal_page_first              879
_journal_paper_doi               10.3390/molecules31050879
_journal_volume                  31
_journal_year                    2026
_chemical_formula_moiety         'C18 H17 N O5'
_chemical_formula_sum            'C18 H17 N O5'
_chemical_formula_weight         327.32
_chemical_name_systematic
Hydroxy-4-((2-(2-hydroxyethoxy)ethyl)amino)anthracene-9,10-dione
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_contact_author_email      thierry.maris@umontreal.ca
_audit_contact_author_name       'Thierry Maris'
_audit_contact_author_phone      '+1 514 343 6111 3937'
_audit_creation_date             2022-11-17
_cell_angle_alpha                90
_cell_angle_beta                 96.810(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.4600(6)
_cell_length_b                   24.572(4)
_cell_length_c                   13.444(2)
_cell_measurement_reflns_used    9376
_cell_measurement_temperature    150
_cell_measurement_theta_max      57.043
_cell_measurement_theta_min      3.279
_cell_volume                     1462.9(4)
_computing_cell_refinement
;
SAINT (2020) V8.40B; Integration Software for Single Crystal Data.
Bruker AXS Inc., Madison, WI 53719-1173.
;
_computing_data_collection
;
APEX 3 (2019) Bruker AXS Inc., Madison, WI 53719-1173.
;
_computing_data_reduction
;
SAINT (2020) V8.40B; Integration Software for Single Crystal Data.
Bruker AXS Inc., Madison, WI 53719-1173.
;
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      150
_diffrn_detector                 'CMOS Area detector'
_diffrn_detector_area_resol_mean 10.42
_diffrn_detector_type            'Bruker CMOS Photon III '
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device       'k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker Venture Metaljet'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_collimation    'Focusing mirrors'
_diffrn_radiation_monochromator  'Helios MX Mirror Optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Ga K\a'
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0345
_diffrn_reflns_av_unetI/netI     0.0201
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            27539
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         57.053
_diffrn_reflns_theta_min         3.278
_diffrn_source                   'Metal Jet'
_diffrn_source_current           2.86
_diffrn_source_power             0.1994
_diffrn_source_target            Ga
_diffrn_source_type              'Gallium Liquid Metal Jet Source'
_diffrn_source_voltage           69.71
_exptl_absorpt_coefficient_mu    0.578
_exptl_absorpt_correction_T_max  0.2570
_exptl_absorpt_correction_T_min  0.1733
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1143 before and 0.0602 after correction.
The Ratio of minimum to maximum transmission is 0.6743.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light brown'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    brown
_exptl_crystal_density_diffrn    1.486
_exptl_crystal_description       Plate
_exptl_crystal_F_000             688
_exptl_crystal_recrystallization_method 'crystallised from EtOAc/MeOH'
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.209
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.037
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     229
_refine_ls_number_reflns         2986
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0367
_refine_ls_R_factor_gt           0.0335
_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^)+(0.0506P)^2^+0.3430P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0948
_refine_ls_wR_factor_ref         0.0982
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                2703
_reflns_number_total             2986
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            seddik041.cif
_cod_data_source_block           seddik041
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_diffrn_radiation_probe' value 'X-ray' was changed to
'x-ray' in accordance with the built-in table derived from the CIF
Core dictionary named 'cif_core.dic' version 2.4.5 last updated on
2014-11-21.

Automatic conversion script
Id: cif_fix_values 8738 2021-04-28 16:35:53Z antanas 
;
_cod_database_code               1577062
_cod_database_fobs_code 1577062