1,4,5,8-Tetraisopropylanthracene
Kitamura, Chitoshi; Tsukuda, Hideki; Kawase, Takeshi; Kobayashi, Takashi; Naito, Hiroyoshi; Acta Crystallographica Section E 66 (2010) o2222–; doi:10.1107/S1600536810030837

data_2227307
_publ_section_title
;
 1,4,5,8-Tetraisopropylanthracene
;
_journal_coeditor_code           CI5142
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2222
_journal_paper_doi               10.1107/S1600536810030837
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C26 H34'
_chemical_formula_moiety         'C26 H34'
_chemical_formula_sum            'C26 H34'
_chemical_formula_weight         346.53
_chemical_melting_point          488
_chemical_name_systematic
;
1,4,5,8-Tetraisopropylanthracene
;
_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_primary     direct
_cell_angle_alpha                90
_cell_angle_beta                 98.289(8)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.546(3)
_cell_length_b                   10.357(5)
_cell_length_c                   15.808(8)
_cell_measurement_reflns_used    2745
_cell_measurement_temperature    223
_cell_measurement_theta_max      31.0633
_cell_measurement_theta_min      2.3583
_cell_volume                     1060.5(9)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC, 2006)'
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2006)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC, 2006)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2004 (Burla <i>et al.</i>, 2005)'
_diffrn_ambient_temperature      223
_diffrn_detector_area_resol_mean 14.7059
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Rigaku/MSC Mercury CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating-anode X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0434
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            9107
_diffrn_reflns_theta_full        29.12
_diffrn_reflns_theta_max         29.12
_diffrn_reflns_theta_min         2.36
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.06
_exptl_absorpt_correction_T_max  0.9964
_exptl_absorpt_correction_T_min  0.9909
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   '(NUMABS; Higashi, 2000)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.085
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             380
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.275
_refine_diff_density_min         -0.235
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.068
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     122
_refine_ls_number_reflns         2817
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0941
_refine_ls_R_factor_gt           0.0627
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0945P)^2^+0.0217P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1585
_refine_ls_wR_factor_ref         0.1796
_reflns_number_gt                1921
_reflns_number_total             2817
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ci5142.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2227307
_cod_database_fobs_code          2227307