Absolute asymmetric photocyclization of triisopropylbenzophenone derivatives in crystals and their morphological changes.
Koshima, Hideko; Fukano, Michitaro; Ojima, Naoko; Johmoto, Kohei; Uekusa, Hidehiro; Shiro, Motoo; The Journal of organic chemistry 79 (2014) 3088–3093; doi:10.1021/jo5000913

data_4029255
_publ_section_title
;
 Absolute asymmetric photocyclization of triisopropylbenzophenone
 derivatives in crystals and their morphological changes.
;
_journal_issue                   7
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              3088
_journal_page_last               3093
_journal_paper_doi               10.1021/jo5000913
_journal_volume                  79
_journal_year                    2014
_chemical_formula_moiety         'C30 H35 N O2'
_chemical_formula_sum            'C30 H35 N O2'
_chemical_formula_weight         441.61
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.0000
_cell_angle_beta                 93.017(7)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            8
_cell_length_a                   34.467(4)
_cell_length_b                   16.0663(18)
_cell_length_c                   9.5149(10)
_cell_measurement_reflns_used    12660
_cell_measurement_temperature    296
_cell_measurement_theta_max      68.30
_cell_measurement_theta_min      3.00
_cell_volume                     5261.6(10)
_computing_cell_refinement       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_collection       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_reduction        'CrystalStructure (Rigaku, 2000-2010)'
_computing_molecular_graphics    'ORTEP (Johnson, 1976)'
_computing_publication_material  'CrystalStructure (Rigaku, 2000-2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_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  0.0515
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            19377
_diffrn_reflns_theta_full        50.40
_diffrn_reflns_theta_max         50.40
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.533
_exptl_absorpt_correction_T_max  0.933
_exptl_absorpt_correction_T_min  0.751
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Rigaku, 1995)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.115
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1904.00
_exptl_crystal_size_max          0.410
_exptl_crystal_size_mid          0.210
_exptl_crystal_size_min          0.130
_refine_diff_density_max         0.360
_refine_diff_density_min         -0.240
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     259
_refine_ls_number_reflns         2732
_refine_ls_number_restraints     62
_refine_ls_R_factor_gt           0.0845
_refine_ls_shift/su_max          0.004
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.1512P)^2^+5.5452P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.2730
_reflns_number_gt                1643
_reflns_number_total             2728
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            jo5000913_si_006.cif
_cod_data_source_block           RGK1946[rac-4(produc)]
_cod_depositor_comments
;Adding full bibliography for
 ./tmp-cod-update-bibliographies-12971/cifs/4029255.cif.
;
_cod_original_cell_volume        5261.6(11)
_cod_database_code               4029255
_verf_thetm01_alert_3_a
;
PROBLEM: The value of sin(theta_max)/wavelength is less than 0.550
         Calculated sin(theta_max)/wavelength =    0.4997
RESPONSE: Low-resolution reflection data used, see _publ_section_
          exptl_refinement
;