Synthesis of the Phenoxonium Cation of an α-Tocopherol Model Compound Crystallized with Non-Nucleophilic [B(C6F5)4]-and (CB11H6Br6)- Anions
Stephen B. Lee; Anthony C. Willis; Richard D. Webster; Journal of the American Chemical Society 128 (2006) 9332–9333; doi:10.1021/ja0634268

data_4110734
_publ_contact_author_address
;
Research School of Chemistry,
Australian National University,
Canberra, A. C. T. 0200, Australia
;
_publ_contact_author_email       ' willis@rsc.anu.edu.au '
_publ_contact_author_fax         ' 61 2 6125 0750 '
_publ_contact_author_name        ' Anthony C. Willis '
_publ_contact_author_phone       ' 61 2 6125 4109 '
_publ_section_title
;
 Synthesis of the Phenoxonium Cation of an \a-Tocopherol Model Compound
 Crystallized with Non-Nucleophilic [B(C6F5)4]-and (CB11H6Br6)- Anions
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9332
_journal_page_last               9333
_journal_paper_doi               10.1021/ja0634268
_journal_volume                  128
_journal_year                    2006
_chemical_compound_source        local
_chemical_formula_moiety         'C14 H19 O2 +, C24 B F20 -'
_chemical_formula_sum            'C38 H19 B F20 O2'
_chemical_formula_weight         898.34
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             06-03-28
_audit_creation_method           CRYSTALS_ver_12.18
_audit_update_record
;
2006-03-31 - Report on C38 H19 B F20 O2 
             by Anthony C. Willis
             for  Stephen B. Lee and Richard D. Webster

2006-03-31 - passes checkcif tests with minor warnings  

;
_cell_angle_alpha                90
_cell_angle_beta                 98.7693(13)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.9549(2)
_cell_length_b                   17.4980(4)
_cell_length_c                   17.3301(3)
_cell_measurement_reflns_used    29935
_cell_measurement_temperature    200
_cell_measurement_theta_max      27
_cell_measurement_theta_min      3
_cell_volume                     3582.85(12)
_computing_cell_refinement       'Denzo/Scalepack '
_computing_data_collection       'COLLECT (Nonius BV, 1997)'
_computing_data_reduction        'Denzo/Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics
; 
ORTEP-II (Johnson 1976) in teXsan (MSC, 1992-1997)
;
_computing_publication_material  'CRYSTALS '
_computing_structure_refinement  'CRYSTALS (Watkin et al 2003)'
_computing_structure_solution    'SIR92 (Altomare et al, 1994)'
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       ' \f and \w scans with CCD '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.032
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            38073
_diffrn_reflns_theta_full        27.495
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         2.614
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.173
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.87
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Denzo/Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.665
_exptl_crystal_description       plate
_exptl_crystal_F_000             1792
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.24
_refine_diff_density_min         -0.23
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.8816
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     607
_refine_ls_number_reflns         4104
_refine_ls_number_restraints     61
_refine_ls_R_factor_all          0.0423
_refine_ls_R_factor_gt           0.0316
_refine_ls_shift/su_max          0.038298
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.05P)^2^ + 1.28P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0733
_refine_ls_wR_factor_gt          0.0694
_refine_ls_wR_factor_ref         0.0733
_reflns_limit_h_max              15
_reflns_limit_h_min              -15
_reflns_limit_k_max              22
_reflns_limit_k_min              0
_reflns_limit_l_max              22
_reflns_limit_l_min              0
_reflns_number_gt                3377
_reflns_number_total             4113
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   3.68
_oxford_diffrn_Wilson_scale      8.16
_oxford_refine_ls_scale          0.3513(3)
_oxford_structure_analysis_title '3281409 web0602'
_cod_data_source_file            ja0634268si20060516_092559.cif
_cod_data_source_block           web0602
_cod_original_sg_symbol_H-M      'C 1 c 1 '
_cod_database_code               4110734