Vitamin E Chemistry. Nitration of Non-α-tocopherols: Products and Mechanistic Considerations
Anjan Patel; Falk Liebner; Thomas Netscher; Kurt Mereiter; Thomas Rosenau; Journal of Organic Chemistry 72 (2007) 6504–6512; doi:10.1021/jo0706832

data_4024117
_publ_contact_author_address
;
 Prof. Dr. Thomas Rosenau
 Department of Chemistry,  
 University of Natural Resources (BOKU), 
 Muthgasse 18, 
 A-1190 Vienna, Austria 
;
_publ_contact_author_email       thomas.rosenau@boku.ac.at
_publ_contact_author_fax         '+43-1-36006 6059'
_publ_contact_author_name        'Prof. Dr. Thomas Rosenau'
_publ_contact_author_phone       '+43-1-36006 6061'
_publ_section_title
;
 Vitamin E Chemistry. Nitration of Non-\a-tocopherols:
 Products and Mechanistic Considerations
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6504
_journal_page_last               6512
_journal_paper_doi               10.1021/jo0706832
_journal_volume                  72
_journal_year                    2007
_chemical_formula_moiety         'C19 H19 N O5'
_chemical_formula_sum            'C19 H19 N O5'
_chemical_formula_weight         341.35
_chemical_name_common            'compound (8a)'
_chemical_name_systematic
; 
4-Nitro-benzoic acid 2,2,8-trimethyl-chroman-6-yl ester
;
_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                 97.757(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.2752(14)
_cell_length_b                   11.8402(10)
_cell_length_c                   8.8053(8)
_cell_measurement_reflns_used    6667
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.96
_cell_measurement_theta_min      2.33
_cell_volume                     1681.3(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT, SADABS, XPREP'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.947
_diffrn_measured_fraction_theta_max 0.968
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0261
_diffrn_reflns_av_sigmaI/netI    0.0252
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            16693
_diffrn_reflns_theta_full        29.96
_diffrn_reflns_theta_max         29.96
_diffrn_reflns_theta_min         2.53
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.87
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'program SADABS'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.349
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.464
_refine_diff_density_min         -0.211
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     229
_refine_ls_number_reflns         4739
_refine_ls_number_restraints     67
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0525
_refine_ls_R_factor_gt           0.0429
_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^)+(0.0773P)^2^+0.2861P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1144
_refine_ls_wR_factor_ref         0.1231
_reflns_number_gt                3845
_reflns_number_total             4739
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo0706832si20070403_060801_3.cif
_cod_data_source_block           8a=1221
_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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4024117