Shaping Crystals with Light: Crystal-to-Crystal Isomerization and Photomechanical Effect in Fluorinated Azobenzenes
Oleksandr S. Bushuyev; Anna Tomberg; Tomislav Friščić; Christopher J. Barrett; Journal of the American Chemical Society 135 (2013) 12556–12559; doi:10.1021/ja4063019

data_4120383
_publ_section_title
;
 Shaping Crystals with Light: Crystal-to-Crystal Isomerization and
 Photomechanical Effect in Fluorinated Azobenzenes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12556
_journal_page_last               12559
_journal_paper_doi               10.1021/ja4063019
_journal_volume                  135
_journal_year                    2013
_chemical_formula_moiety         'C12 Br2 F8 N2'
_chemical_formula_sum            'C12 Br2 F8 N2'
_chemical_formula_weight         483.96
_chemical_name_common            cis-1a
_chemical_name_systematic
; 
 cis-dibromooctafluoroazobenzene, polymorph 2 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 103.254(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.707(3)
_cell_length_b                   5.5970(11)
_cell_length_c                   18.138(3)
_cell_measurement_reflns_used    3028
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.28
_cell_measurement_theta_min      2.31
_cell_volume                     1354.4(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0163
_diffrn_reflns_av_sigmaI/netI    0.0164
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            5029
_diffrn_reflns_theta_full        26.73
_diffrn_reflns_theta_max         26.73
_diffrn_reflns_theta_min         2.31
_exptl_absorpt_coefficient_mu    6.080
_exptl_absorpt_correction_T_max  0.5732
_exptl_absorpt_correction_T_min  0.1859
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.373
_exptl_crystal_description       needle
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.345
_refine_diff_density_min         -0.343
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1433
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0210
_refine_ls_R_factor_gt           0.0183
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0214P)^2^+2.1299P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0445
_refine_ls_wR_factor_ref         0.0455
_reflns_number_gt                1321
_reflns_number_total             1433
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja4063019_si_006_2.cif
_cod_data_source_block           cis-1a
_cod_original_cell_volume        1354.5(4)
_cod_database_code               4120383