Mechanical motion of molecular crystals induced by [4 + 4] photodimerisation
Koshima, Hideko; Uchimoto, Hidetaka; Taniguchi, Takuya; Nakamura, Jun; Asahi, Tsuyoshi; Asahi, Toru; CrystEngComm 18 (2016) 7305–; doi:10.1039/C6CE00848H

data_7225387
_publ_section_title
;
 Mechanical motion of molecular crystals induced by [4 + 4]
 photodimerisation
;
_journal_issue                   38
_journal_name_full               CrystEngComm
_journal_page_first              7305
_journal_paper_doi               10.1039/C6CE00848H
_journal_volume                  18
_journal_year                    2016
_chemical_formula_moiety         'C24 H16 O'
_chemical_formula_sum            'C24 H16 O'
_chemical_formula_weight         320.39
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_update_record
;
2016-04-13 deposited with the CCDC.
2016-05-31 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 90.0000
_cell_angle_gamma                90.0000
_cell_formula_units_Z            8
_cell_length_a                   14.6652(4)
_cell_length_b                   8.6882(3)
_cell_length_c                   26.0272(8)
_cell_measurement_reflns_used    16014
_cell_measurement_temperature    293
_cell_measurement_theta_max      68.23
_cell_measurement_theta_min      3.40
_cell_volume                     3316.23(18)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO (Rigaku, ????)'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'CrystalStructure 4.1.1'
_computing_publication_material  'CrystalStructure 4.1.1 (Rigaku, 2015)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2004 (Burla, et al., 2005)'
_diffrn_ambient_temperature      293
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0567
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            34753
_diffrn_reflns_theta_full        68.230
_diffrn_reflns_theta_max         68.230
_diffrn_reflns_theta_min         3.396
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.597
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.790
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Rigaku, 1995)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1344.00
_exptl_crystal_size_max          0.130
_exptl_crystal_size_mid          0.041
_exptl_crystal_size_min          0.016
_refine_diff_density_max         0.23
_refine_diff_density_min         -0.24
_refine_ls_extinction_coef       0.0038(6)
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    mixed
_refine_ls_number_parameters     258
_refine_ls_number_reflns         3039
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1105
_refine_ls_R_factor_gt           0.0723
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.1431P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1949
_refine_ls_wR_factor_ref         0.2471
_reflns_number_gt                1478
_reflns_number_total             3039
_reflns_threshold_expression     F>2.0\s(F)
_cod_data_source_file            c6ce00848h3.cif
_cod_data_source_block           20110111
_cod_depositor_comments
'Adding full bibliography for 7225387--7225388.cif.'
_cod_original_cell_volume        3316.22(18)
_cod_database_code               7225387