(<i>E</i>)-1,1,4,4-Tetraphenylbut-2-yne-1,4-diol
Sundar, J. Kalyana; Kumar, K. Mohan; Vijayakumar, V.; Suresh, J.; Natarajan, S.; Lakshman, P. L. Nilantha; Acta Crystallographica Section E 66 (2010) o679–; doi:10.1107/S160053681000629X

data_2225394
_publ_section_title
;
 (<i>E</i>)-1,1,4,4-Tetraphenylbut-2-yne-1,4-diol
;
_journal_coeditor_code           TK2631
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o679
_journal_paper_doi               10.1107/S160053681000629X
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C28 H22 O2'
_chemical_formula_moiety         'C28 H22 O2'
_chemical_formula_sum            'C28 H22 O2'
_chemical_formula_weight         390.46
_chemical_name_systematic
;
(<i>E</i>)-1,1,4,4-Tetraphenylbut-2-yne-1,4-diol
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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                 104.930(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.7760(7)
_cell_length_b                   6.1154(4)
_cell_length_c                   14.7620(9)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      2
_cell_volume                     1027.20(12)
_computing_cell_refinement       'CAD-4 Express (Enraf--Nonius, 1994)'
_computing_data_collection       'CAD-4 Express (Enraf--Nonius, 1994)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1996)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Nonius Mach3'
_diffrn_measurement_method       \w-2\q
_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  0.0190
_diffrn_reflns_av_sigmaI/netI    0.0235
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            2268
_diffrn_reflns_theta_full        24.97
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         2.56
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  0.9853
_exptl_absorpt_correction_T_min  0.9823
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North <i>et al.</i>,  1968)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.262
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             412
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.345
_refine_diff_density_min         -0.286
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.090
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         1793
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.0917
_refine_ls_R_factor_gt           0.0523
_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^)+(0.191P)^2^+0.1322P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1884
_refine_ls_wR_factor_ref         0.2762
_reflns_number_gt                1190
_reflns_number_total             1793
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            tk2631.cif
_cod_data_source_block           I
_cod_original_cell_volume        1027.20(11)
_cod_original_sg_symbol_Hall     '-P 2yn '
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2225394
_cod_database_fobs_code          2225394