Structural and Variable-Temperature NMR Studies of 9-Diisopropylphosphanylanthracenes and 9,10-Bis(diisopropylphosphanyl)anthracenes and Their Oxidation Products
Gerald Schwab; Daniel Stern; Dietmar Stalke; Journal of Organic Chemistry 73 (2008) 5242–5247; doi:10.1021/jo800294e

data_4023535
_publ_contact_author             'Prof. Dr. Dietmar Stalke'
_publ_contact_author_email       dstalke@chemie.uni-goettingen.de
_publ_section_title
;
 Structural and Variable-Temperature NMR Studies of
 9-Diisopropylphosphanylanthracenes and
 9,10-Bis(diisopropylphosphanyl)anthracenes
 and Their Oxidation Products
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5242
_journal_page_last               5247
_journal_paper_doi               10.1021/jo800294e
_journal_volume                  73
_journal_year                    2008
_chemical_formula_sum            'C20 H22 Br P Se'
_chemical_formula_weight         452.22
_chemical_name_common            Br(C14H8)(iPr2P=Se)
_chemical_name_systematic        9-Brom-10-diisopropylselenophosphorylanthracene
_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                 93.4680(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   22.6134(14)
_cell_length_b                   11.1967(7)
_cell_length_c                   14.5751(9)
_cell_measurement_reflns_used    36401
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.40
_cell_measurement_theta_min      2.30
_cell_volume                     3683.6(4)
_computing_cell_refinement       'SAINT V7.23A'
_computing_data_collection       'APEX2 v2.0-2'
_computing_data_reduction        'SAINT V7.23A'
_computing_molecular_graphics    'XP in SHELXTL ver. 6.12'
_computing_publication_material  'XP in SHELXTL ver. 6.12'
_computing_structure_refinement  'SHELXL in SHELXTL ver. 6.12'
_computing_structure_solution    'SHELXS in SHELXTL ver. 6.12'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Smart Apex II with D8-Goniometer'
_diffrn_measurement_method       'omega 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  0.0262
_diffrn_reflns_av_sigmaI/netI    0.0124
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            77880
_diffrn_reflns_theta_full        26.41
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    4.292
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.65
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS-2004/1
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.631
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1808
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.416
_refine_diff_density_min         -0.699
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     419
_refine_ls_number_reflns         7556
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0235
_refine_ls_R_factor_gt           0.0212
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0242P)^2^+4.2764P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0544
_refine_ls_wR_factor_ref         0.0553
_reflns_number_gt                7073
_reflns_number_total             7556
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo800294e-File006.cif
_cod_data_source_block           2d
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4023535