Design and synthesis of new stable fluorenyl-based radicals.
Tian, Yi; Uchida, Kazuyuki; Kurata, Hiroyuki; Hirao, Yasukazu; Nishiuchi, Tomohiko; Kubo, Takashi; Journal of the American Chemical Society 136 (2014) 12784–12793; doi:10.1021/ja507005c

data_4122494
_publ_section_title
;
 Design and synthesis of new stable fluorenyl-based radicals.
;
_journal_issue                   36
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12784
_journal_page_last               12793
_journal_paper_doi               10.1021/ja507005c
_journal_volume                  136
_journal_year                    2014
_chemical_formula_sum            'C37 H23 Cl6'
_chemical_formula_weight         680.25
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 94.805(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.5286(9)
_cell_length_b                   17.5723(18)
_cell_length_c                   19.0353(17)
_cell_measurement_reflns_used    10871
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      54.92
_cell_measurement_theta_min      6.26
_cell_volume                     3176.1(5)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        'teXsan Ver. 2.0'
_computing_publication_material  'teXsan Ver. 2.0'
_computing_structure_refinement  SHELXL97
_computing_structure_solution    SHELXS97
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID Imaging Plate'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.1550
_diffrn_reflns_av_sigmaI/netI    0.1766
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            30402
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         3.13
_exptl_absorpt_coefficient_mu    0.568
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.423
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1388
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.738
_refine_diff_density_min         -0.777
_refine_diff_density_rms         0.103
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.893
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     407
_refine_ls_number_reflns         7233
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.893
_refine_ls_R_factor_all          0.1888
_refine_ls_R_factor_gt           0.0825
_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^)+(0.1360P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2142
_refine_ls_wR_factor_ref         0.2635
_reflns_number_gt                2815
_reflns_number_total             7233
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1012339.cif
_cod_data_source_block           xty3z20
_cod_depositor_comments
'Adding full bibliography for 4122492--4122495.cif.'
_cod_original_sg_symbol_H-M      'P 21/n       '
_cod_database_code               4122494