Resonating Valence Bond and σ-Charge Density Wave Phases in a Benzannulated Phenalenyl Radical
Pradip Bag; Mikhail E. Itkis; Sushanta K. Pal; Bruno Donnadieu; Fook S. Tham; Hyunsoo Park; John A. Schlueter; Theo Siegrist; Robert C. Haddon; Journal of the American Chemical Society 132 (2010) 2684–2694; doi:10.1021/ja908768a

data_4101940
_publ_section_title
;
 Resonating Valence Bond and \s-Charge Density Wave Phases in a
 Benzannulated Phenalenyl Radical
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2684
_journal_page_last               2694
_journal_paper_doi               10.1021/ja908768a
_journal_volume                  132
_journal_year                    2010
_chemical_formula_sum            'C48 H32 B N2 O2'
_chemical_formula_weight         679.57
_chemical_name_systematic
; 
 ? 
;
_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                 98.9185(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.0928(4)
_cell_length_b                   19.1906(7)
_cell_length_c                   17.2656(6)
_cell_measurement_reflns_used    8776
_cell_measurement_temperature    125(2)
_cell_measurement_theta_max      31.41
_cell_measurement_theta_min      2.30
_cell_volume                     3303.7(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      125(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0340
_diffrn_reflns_av_sigmaI/netI    0.0328
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            44481
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9788
_exptl_absorpt_correction_T_min  0.9685
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.366
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'prism frag'
_exptl_crystal_F_000             1420
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.628
_refine_diff_density_min         -0.242
_refine_diff_density_rms         0.087
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     528
_refine_ls_number_reflns         8201
_refine_ls_number_restraints     145
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0908
_refine_ls_R_factor_gt           0.0688
_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^)+(0.1497P)^2^+0.2895P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2053
_refine_ls_wR_factor_ref         0.2319
_reflns_number_gt                5639
_reflns_number_total             8201
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja908768a_si_005.cif
_cod_data_source_block           rh158_125k-p21c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               4101940