Through-space control of the persistence of photogenerated o-quinonoid intermediates in naphthalenes containing cofacially oriented chromenes and arenes.
Moorthy, Jarugu Narasimha; Mandal, Susovan; Parida, Keshaba Nanda; Organic letters 14 (2012) 2438–2441; doi:10.1021/ol300449p

data_1507665
_publ_section_title
;
 Through-space control of the persistence of photogenerated o-quinonoid
 intermediates in naphthalenes containing cofacially oriented chromenes
 and arenes.
;
_journal_issue                   10
_journal_name_full               'Organic letters'
_journal_page_first              2438
_journal_page_last               2441
_journal_paper_doi               10.1021/ol300449p
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C38 H28 O2'
_chemical_formula_sum            'C38 H28 O2'
_chemical_formula_weight         516.60
_chemical_name_common
;
 6-(8-(4-methoxyphenyl)naphthalen-1-yl)-2,2-diphenyl-2H-chromene
;
_chemical_name_systematic
;
 6-(8-(4-methoxyphenyl)naphthalen-1-yl)-2,2-diphenyl-2H-chromene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 94.888(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.815(4)
_cell_length_b                   10.498(3)
_cell_length_c                   15.113(4)
_cell_measurement_temperature    100(2)
_cell_volume                     2658.1(12)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'SHELXL 5.1, XP (Sheldrick, 1994)'
_computing_publication_material  SHELXS-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.970
_diffrn_measured_fraction_theta_max 0.970
_diffrn_measurement_device_type  'Bruker SMART APEX'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
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_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0897
_diffrn_reflns_av_sigmaI/netI    0.1302
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            16988
_diffrn_reflns_theta_full        28.43
_diffrn_reflns_theta_max         28.43
_diffrn_reflns_theta_min         2.29
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.291
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cuboidal
_exptl_crystal_F_000             1088
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.965
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_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     361
_refine_ls_number_reflns         6493
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.2566
_refine_ls_R_factor_gt           0.1231
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3103
_refine_ls_wR_factor_ref         0.3989
_reflns_number_gt                2431
_reflns_number_total             6493
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol300449p_si_002.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

 Adding full bibliography for 1507664--1507666.cif.
;
_cod_original_cell_volume        2658.2(12)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1507665