The first crystal structure of a monomeric phenoxyl radical: 2,4,6-tri-tert-butylphenoxyl radical
Manner, Virginia W.; Markle, Todd F.; Freudenthal, John H.; Roth, Justine P.; Mayer, James M.; Chemical Communications (Cambridge, United Kingdom)  (2008) 256–258; doi:10.1039/b712872j

data_7102796
_publ_section_title
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 The first crystal structure of a monomeric phenoxyl radical:
 2,4,6-tri-tert-butylphenoxyl radical
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_journal_coden_ASTM              CHCOFS
_journal_issue                   2
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              256
_journal_page_last               258
_journal_paper_doi               10.1039/b712872j
_journal_year                    2008
_chemical_formula_moiety         'C18 H27.99 O0.99'
_chemical_formula_sum            'C18 H27.99 O0.99'
_chemical_formula_weight         260.23
_chemical_name_common            tBu3PhOH
_chemical_name_systematic        tBu3PhOH
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_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                 90.185(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.0648(5)
_cell_length_b                   17.4311(9)
_cell_length_c                   19.6355(9)
_cell_measurement_reflns_used    82
_cell_measurement_temperature    130(2)
_cell_volume                     3444.8(3)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       KappaCCD
_computing_data_reduction        'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'maXus, Zortep'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      130(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.931
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f and \w 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  0.0623
_diffrn_reflns_av_sigmaI/netI    0.0854
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            6571
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.96
_diffrn_reflns_theta_min         2.07
_exptl_absorpt_coefficient_mu    0.060
_exptl_absorpt_correction_T_max  0.9947
_exptl_absorpt_correction_T_min  0.9947
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   HKL2000
_exptl_crystal_colour            clear
_exptl_crystal_density_diffrn    1.003
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cut-block
_exptl_crystal_F_000             1151
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.145
_refine_diff_density_min         -0.158
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.944
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         3479
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.944
_refine_ls_R_factor_all          0.1640
_refine_ls_R_factor_gt           0.0643
_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^)+(0.0950P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1479
_refine_ls_wR_factor_ref         0.1983
_reflns_number_gt                1388
_reflns_number_total             3479
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b712872j.txt
_cod_data_source_block           2
_cod_depositor_comments
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The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_Hall     -c_2yc
_cod_original_sg_symbol_H-M      c2/c
_cod_database_code               7102796