An easily accessible isospiropyran switch.
Neal, Taylor A.; Neal, Jennifer F.; Eippert, Allyson B.; Moore, Curtis; Allen, Heather C.; Badjić, Jovica D; Organic & biomolecular chemistry 17 (2019) 9124–9128; doi:10.1039/c9ob01822k

data_7157073
_publ_section_title
;
 An easily accessible isospiropyran switch.
;
_journal_issue                   41
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              9124
_journal_page_last               9128
_journal_paper_doi               10.1039/c9ob01822k
_journal_volume                  17
_journal_year                    2019
_chemical_formula_moiety         'C24 H15 Br3 O3, C3 H6 O'
_chemical_formula_sum            'C27 H21 Br3 O4'
_chemical_formula_weight         649.17
_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
_atom_sites_solution_secondary   difmap
_audit_creation_date             2019-05-13
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-07-09 deposited with the CCDC.    2019-09-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.994(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.7759(6)
_cell_length_b                   8.8470(4)
_cell_length_c                   23.5375(11)
_cell_measurement_reflns_used    9836
_cell_measurement_temperature    100
_cell_measurement_theta_max      26.334
_cell_measurement_theta_min      2.880
_cell_volume                     2451.8(2)
_computing_cell_refinement       'SAINT v8.38A (Bruker, 2017)'
_computing_data_collection       'APEX3 v2017.3-0 (Bruker, 2017)'
_computing_data_reduction        'SAINT v8.38A (Bruker, 2017)'
_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      100
_diffrn_detector                 'Bruker Photon II area detector'
_diffrn_detector_area_resol_mean 10.5
_diffrn_detector_type            'CMOS area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       'Kappa Four-Circle Diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Curved-Graphite, Bruker TRIUMPH'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0274
_diffrn_reflns_av_unetI/netI     0.0198
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            30295
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         26.384
_diffrn_reflns_theta_min         2.880
_diffrn_source                   'sealed tube'
_diffrn_source_type              fine-focus
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.968
_exptl_absorpt_correction_T_max  0.0932
_exptl_absorpt_correction_T_min  0.0632
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0595 before and 0.0464 after correction. The Ratio of minimum to maximum transmission is 0.6781. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            'Redish Orange'
_exptl_crystal_colour_modifier   Redish
_exptl_crystal_colour_primary    orange
_exptl_crystal_density_diffrn    1.759
_exptl_crystal_description       Rod
_exptl_crystal_F_000             1280
_exptl_crystal_size_max          0.168
_exptl_crystal_size_mid          0.086
_exptl_crystal_size_min          0.074
_refine_diff_density_max         0.685
_refine_diff_density_min         -0.694
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     311
_refine_ls_number_reflns         5015
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0404
_refine_ls_R_factor_gt           0.0285
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0278P)^2^+2.8084P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0643
_refine_ls_wR_factor_ref         0.0690
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4125
_reflns_number_total             5015
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ob01822k2.cif
_cod_data_source_block           Badjic_TN_ClosedAcetone
_cod_depositor_comments
;
The following automatic conversions were performed:

'_diffrn_radiation_probe' value 'X-ray' changed to 'x-ray' 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.

'_exptl_crystal_colour_primary' value 'Orange' changed to 'orange'
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 7157073--7157075.cif.
;
_cod_database_code               7157073
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.710
_shelx_estimated_absorpt_t_min   0.489
_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, All O(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3A), C5(H5), C8(H8), C12(H12), C13(H13), C15(H15), C16(H16),
 C20(H20), C21(H21), C23(H23)
2.b Idealised Me refined as rotating group:
 C24(H24A,H24B,H24C), C1S(H1SA,H1SB,H1SC), C3S(H3SA,H3SB,H3SC)
2.c Idealised tetrahedral OH refined as rotating group:
 O3(H3)
;
_shelx_res_checksum              46983
_olex2_submission_special_instructions 'No special instructions were received'