Kinetic and Mechanistic Study on Single-Crystal-to-Single-Crystal Photodimerization of 2-Benzyl-5-benzylidenecyclopentanone Utilizing X-ray Diffraction
Kazumasa Honda; Fusae Nakanishi; Neil Feeder; Journal of the American Chemical Society 121 (1999) 8246–8250; doi:10.1021/ja991386k

data_4116524
_publ_contact_author_address
;
 National Institute of Materials and Chemical Research
 Tsukuba,  Ibaraki 305-8565
 Japan
;
_publ_contact_author_email       honda@nimc.go.jp
_publ_contact_author_fax         '(81) 298 54 4627'
_publ_contact_author_name        'Dr Kazumasa Honda'
_publ_contact_author_phone       '(81) 298 54 4625'
_publ_section_title
;
 Kinetic and Mechanistic Study on Single-Crystal-to-Single-Crystal
 Photodimerization of 2-Benzyl-5-benzylidenecyclopentanone Utilizing X-ray
 Diffraction
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8246
_journal_page_last               8250
_journal_paper_doi               10.1021/ja991386k
_journal_volume                  121
_journal_year                    1999
_chemical_formula_moiety         'C19 H18 O'
_chemical_formula_sum            'C19 H18 O'
_chemical_formula_weight         262.35
_chemical_melting_point          404
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_audit_creation_date             'Thu Apr 23 12:03:28 1998'
_audit_creation_method           'from TEXRAY.INF file'
_audit_update_record             '98-08-13 updated by K. HONDA'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   31.292(2)
_cell_length_b                   10.7148(6)
_cell_length_c                   8.637(2)
_cell_measurement_reflns_used    15
_cell_measurement_temperature    219
_cell_measurement_theta_max      13.7
_cell_measurement_theta_min      10.4
_cell_volume                     2895.9(7)
_computing_cell_refinement
'CAD4 diffractometer control (Enraf-Nonius, 1989)'
_computing_data_collection
'CAD4 diffractometer control (Enraf-Nonius, 1989)'
_computing_data_reduction
'TEXSAN PROCESS (Molecular Structure Corporation, 1994)'
_computing_publication_material
'TEXSAN FINISH (Molecular Structure Corporation, 1998)'
_computing_structure_refinement
'TEXSAN LS (Molecular Structure Corporation, 1994)'
_computing_structure_solution    'SHELXS86 (Sheldrick, 1985)'
_diffrn_ambient_temperature      219
_diffrn_measurement_device_type  'Enraf-Nonius CAD4'
_diffrn_measurement_method       \w
_diffrn_orient_matrix_UB_11      0.00037
_diffrn_orient_matrix_UB_12      0.07570
_diffrn_orient_matrix_UB_13      0.06772
_diffrn_orient_matrix_UB_21      0.03185
_diffrn_orient_matrix_UB_22      -0.00512
_diffrn_orient_matrix_UB_23      0.00654
_diffrn_orient_matrix_UB_31      0.00249
_diffrn_orient_matrix_UB_32      0.05433
_diffrn_orient_matrix_UB_33      -0.09362
_diffrn_radiation_detector       'scintillation counter'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine focus Enraf-Nonius Mo tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.000
_diffrn_reflns_av_sigmaI/netI    0.156
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2547
_diffrn_reflns_reduction_process 'Lp corrections applied'
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         1.0
_diffrn_standards_decay_%        2.52
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.994
_exptl_absorpt_correction_T_min  0.960
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North, Phillips & Mathews, 1968)'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_density_diffrn    1.203
_exptl_crystal_description       plate
_exptl_crystal_F_000             1120.00
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.23
_refine_diff_density_min         -0.27
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.223
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     253
_refine_ls_number_reflns         1399
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1829
_refine_ls_R_factor_gt           0.0677
_refine_ls_shift/su_max          0.0084
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(Fo) + 0.00090|Fo|^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0911
_refine_ls_wR_factor_ref         0.0705
_reflns_number_gt                1399
_reflns_number_total             2547
_reflns_observed_criterion       >1.0sigma(I)
_cod_data_source_file            ja991386k_5.cif
_cod_data_source_block           B317@219K
_cod_original_cell_volume        2896.0(7)
_cod_original_sg_symbol_H-M      'P b c a '
_cod_original_formula_sum        'C19 H18 O '
_cod_database_code               4116524