Acidochromic spiropyran‒merocyanine stabilisation in the solid state
Seiler, Vanessa Kristina; Callebaut, Kevin; Robeyns, Koen; Tumanov, Nikolay; Wouters, Johan; Champagne, Benoît; Leyssens, Tom; CrystEngComm 20 (2018) 3318–; doi:10.1039/C8CE00291F

data_7230427
_publ_section_title
;
 Acidochromic spiropyran--merocyanine stabilisation in the solid state
;
_journal_issue                   24
_journal_name_full               CrystEngComm
_journal_page_first              3318
_journal_paper_doi               10.1039/C8CE00291F
_journal_volume                  20
_journal_year                    2018
_chemical_formula_moiety         'C19 H20 N O, N O3'
_chemical_formula_sum            'C19 H20 N2 O4'
_chemical_formula_weight         340.37
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-02-15 deposited with the CCDC.
2018-04-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.4953(9)
_cell_length_b                   19.9612(19)
_cell_length_c                   8.1903(7)
_cell_measurement_reflns_used    2703
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.7040
_cell_measurement_theta_min      3.3040
_cell_volume                     1715.9(3)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_data_collection       MAR
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_molecular_graphics    'MERCURY (Macrae et al., 2008)'
_computing_publication_material
;

'MERCURY (Macrae et al., 2008), Platon (Spek, 2009)'

;
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'MAR345 image plate'
_diffrn_measurement_method       '113 images, \D\F 2.0\% '
_diffrn_radiation_monochromator  'Xenocs Fox3D mirror'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0980
_diffrn_reflns_av_unetI/netI     0.0826
_diffrn_reflns_Laue_measured_fraction_full 0.981
_diffrn_reflns_Laue_measured_fraction_max 0.980
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            8028
_diffrn_reflns_point_group_measured_fraction_full 0.864
_diffrn_reflns_point_group_measured_fraction_max 0.862
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.257
_diffrn_reflns_theta_min         3.316
_diffrn_source                   'Rigaku UltraX 18 rotating anode'
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.85405
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.318
_exptl_crystal_description       rod
_exptl_crystal_F_000             720
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Ethanol'
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.120
_refine_diff_density_min         -0.118
_refine_diff_density_rms         0.030
_refine_ls_abs_structure_details
;
 Flack x determined using 474 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -1.9(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     304
_refine_ls_number_reflns         2671
_refine_ls_number_restraints     152
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.1027
_refine_ls_R_factor_gt           0.0564
_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^)+(0.0328P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0973
_refine_ls_wR_factor_ref         0.1144
_reflns_Friedel_coverage         0.636
_reflns_Friedel_fraction_full    0.727
_reflns_Friedel_fraction_max     0.725
_reflns_number_gt                1703
_reflns_number_total             2671
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ce00291f2.cif
_cod_data_source_block           vs32-1d6d2
_cod_depositor_comments
'Adding full bibliography for 7230424--7230439.cif.'
_cod_database_code               7230427
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              88575