The First Electronically Stabilized Phenalenyl Radical: Effect of Substituents on Solution Chemistry and Solid-State Structure
Beer, Leanne; Mandal, Swadhin K.; Reed, Robert W.; Oakley, Richard T.; Tham, Fook S.; Donnadieu, Bruno; Haddon, Robert C.; Crystal Growth & Design 7 (2007) 802–; doi:10.1021/cg0603366

data_4503909
_publ_section_title
;
 The First Electronically Stabilized Phenalenyl Radical:&#x00A0; Effect of
 Substituents on Solution Chemistry and Solid-State Structure
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              802
_journal_paper_doi               10.1021/cg0603366
_journal_volume                  7
_journal_year                    2007
_chemical_formula_sum            'C18 H16 O4'
_chemical_formula_weight         296.31
_space_group_IT_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                 97.731(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9301(16)
_cell_length_b                   7.9101(11)
_cell_length_c                   14.804(2)
_cell_measurement_temperature    90(2)
_cell_volume                     1384.3(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0317
_diffrn_reflns_av_sigmaI/netI    0.0282
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            7472
_diffrn_reflns_theta_full        23.25
_diffrn_reflns_theta_max         23.25
_diffrn_reflns_theta_min         2.35
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  0.9734
_exptl_absorpt_correction_T_min  0.9600
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             624
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.27
_refine_diff_density_max         0.369
_refine_diff_density_min         -0.274
_refine_diff_density_rms         0.048
_refine_ls_extinction_coef       0.003(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     213
_refine_ls_number_reflns         1984
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0895
_refine_ls_R_factor_gt           0.0699
_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^)+(0.1025P)^2^+1.4053P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1915
_refine_ls_wR_factor_ref         0.2129
_reflns_number_gt                1497
_reflns_number_total             1984
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg0603366si20060605_092223.cif
_cod_data_source_block           rh34_0m
_cod_database_code               4503909