Structure-function relationships of donor-acceptor Stenhouse adduct photochromic switches.
Mallo, Neil; Foley, Eric D.; Iranmanesh, Hasti; Kennedy, Aaron D. W.; Luis, Ena T.; Ho, Junming; Harper, Jason B.; Beves, Jonathon E.; Chemical science 9 (2018) 8242–8252; doi:10.1039/c8sc03218a

data_1549926
_publ_section_title
;
 Structure-function relationships of donor-acceptor Stenhouse adduct
 photochromic switches.
;
_journal_issue                   43
_journal_name_full               'Chemical science'
_journal_page_first              8242
_journal_page_last               8252
_journal_paper_doi               10.1039/c8sc03218a
_journal_volume                  9
_journal_year                    2018
_chemical_formula_moiety         'C20 H23 N3 O4, C4 H8 O'
_chemical_formula_sum            'C24 H31 N3 O5'
_chemical_formula_weight         441.52
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2018-03-15
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
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_audit_update_record
;
2018-04-24 deposited with the CCDC.
2018-08-29 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 104.310(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.8801(13)
_cell_length_b                   9.9317(11)
_cell_length_c                   20.246(2)
_cell_measurement_reflns_used    9920
_cell_measurement_temperature    150
_cell_measurement_theta_max      25.663
_cell_measurement_theta_min      2.372
_cell_volume                     2314.7(4)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_collection       '<i>APEX3 </i>(Bruker, 2015)'
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_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker kappa APEXII CCD Diffractometer'
_diffrn_measurement_method       '\f scans, and \w scans with \k offsets'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0904
_diffrn_reflns_av_unetI/netI     0.0546
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            73739
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         28.824
_diffrn_reflns_theta_min         1.769
_diffrn_source                   'Incoatec I\mS microfocus X-ray source'
_exptl_absorpt_coefficient_mu    0.089
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_exptl_absorpt_correction_T_min  0.6412
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2016)'
_exptl_crystal_colour            violet
_exptl_crystal_colour_primary    violet
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_exptl_crystal_description       plate
_exptl_crystal_F_000             944
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.23
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_refine_ls_extinction_coef       0.0032(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/1 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     294
_refine_ls_number_reflns         6001
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.1396
_refine_ls_R_factor_gt           0.0764
_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^)+(0.1210P)^2^+1.8257P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1998
_refine_ls_wR_factor_ref         0.2460
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3490
_reflns_number_total             6001
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8sc03218a2.cif
_cod_data_source_block           4a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 1549921--1549929.cif.
;
_cod_database_code               1549926
_shelx_shelxl_version_number     2018/1
_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), C14(H14A,H14B), C21(H21A,H21B), C22(H22A,H22B), C23(H23A,
 H23B), C24(H24A,H24B)
2.b Aromatic/amide H refined with riding coordinates:
 C7(H7), C9(H9), C10(H10), C11(H11), C16(H16), C17(H17), C18(H18), C19(H19),
 C20(H20)
2.c Idealised Me refined as rotating group:
 C2(H2A,H2B,H2C), C3(H3A,H3B,H3C), C12(H12A,H12B,H12C)
2.d Idealised tetrahedral OH refined as rotating group:
 O4(H4)
;
_olex2_submission_special_instructions 'No special instructions were received'