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_4122493
_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            'C35 H20'
_chemical_formula_weight         440.51
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 118.001(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.719(2)
_cell_length_b                   13.335(2)
_cell_length_c                   13.137(2)
_cell_measurement_reflns_used    4440
_cell_measurement_temperature    200
_cell_measurement_theta_max      54.89
_cell_measurement_theta_min      6.11
_cell_volume                     2276.7(6)
_computing_molecular_graphics
'Yadokari-XG 2009 (Wakita Nemoto et al., 2009)'
_computing_publication_material
'Yadokari-XG 2009 (Wakita,Nemoto et al., 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID Imaging Plate'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0646
_diffrn_reflns_av_sigmaI/netI    0.0490
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            10861
_diffrn_reflns_theta_full        27.45
_diffrn_reflns_theta_max         27.45
_diffrn_reflns_theta_min         3.06
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.9927
_exptl_absorpt_correction_T_min  0.9927
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            violet
_exptl_crystal_density_diffrn    1.285
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.213
_refine_diff_density_min         -0.162
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     160
_refine_ls_number_reflns         2603
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0752
_refine_ls_R_factor_gt           0.0485
_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^)+(0.0556P)^2^+0.6305P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1112
_refine_ls_wR_factor_ref         0.1268
_reflns_number_gt                1827
_reflns_number_total             2603
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1012336.cif
_cod_data_source_block           xty6411
_cod_depositor_comments
'Adding full bibliography for 4122492--4122495.cif.'
_cod_original_cell_volume        2276.6(6)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4122493