Synthesis of a BDPA-TEMPO biradical.
Dane, Eric L.; Maly, Thorsten; Debelouchina, Galia T.; Griffin, Robert G.; Swager, Timothy M.; Organic letters 11 (2009) 1871–1874; doi:10.1021/ol9001575

data_1503817
_publ_section_title
;
 Synthesis of a BDPA-TEMPO biradical.
;
_journal_issue                   9
_journal_name_full               'Organic letters'
_journal_page_first              1871
_journal_page_last               1874
_journal_paper_doi               10.1021/ol9001575
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C36 H26 O2.5'
_chemical_formula_weight         498.57
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                73.8490(10)
_cell_angle_beta                 80.8120(10)
_cell_angle_gamma                66.3440(10)
_cell_formula_units_Z            4
_cell_length_a                   11.2172(4)
_cell_length_b                   13.4212(4)
_cell_length_c                   19.4882(6)
_cell_measurement_reflns_used    9990
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.45
_cell_measurement_theta_min      2.21
_cell_volume                     2577.46(15)
_computing_cell_refinement       'SAINT 7 (Bruker-AXS, 2005)'
_computing_data_collection       'SMART 5 (Bruker-AXS, 2003)'
_computing_data_reduction        'SAINT 7 (Bruker-AXS, 2005)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker Smart APEX CCD'
_diffrn_measurement_method       'omega and phi 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  0.0283
_diffrn_reflns_av_sigmaI/netI    0.0313
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            47522
_diffrn_reflns_theta_full        29.57
_diffrn_reflns_theta_max         29.57
_diffrn_reflns_theta_min         1.70
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.9843
_exptl_absorpt_correction_T_min  0.9766
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2005)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.285
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1048
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.441
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     740
_refine_ls_number_reflns         14387
_refine_ls_number_restraints     198
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0659
_refine_ls_R_factor_gt           0.0479
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0649P)^2^+0.7632P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1170
_refine_ls_wR_factor_ref         0.1282
_reflns_number_gt                11137
_reflns_number_total             14387
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol9001575_si_002.cif
_cod_data_source_block           07073
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        2577.46(14)
_cod_original_sg_symbol_H-M      P-1
_cod_original_formula_sum        'C36 H26 O2.50'
_cod_database_code               1503817