Crystal engineering in the <i>gem</i>-alkynol family; synthon repetitivity and topological similarity in diphenylethynylmethanols: structures that lack O—H···O hydrogen bonds
Bilton, Clair; Howard, Judith A. K.; Madhavi, N. N. L.; Nangia, Ashwini; Desiraju, Gautam R.; Allen, Frank H.; Wilson, Chick C.; Acta Crystallographica Section B 56 (2000) 1071–1079; doi:10.1107/S010876810001154X

data_2102182
_publ_section_title
;
 Crystal engineering in the <i>gem</i>-alkynol family; synthon
 repetitivity and topological similarity in diphenylethynylmethanols:
 structures that lack O---H&#x00B7;&#x00B7;&#x00B7;O hydrogen bonds
;
_journal_coeditor_code           BM0034
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              1071
_journal_page_last               1079
_journal_paper_doi               10.1107/S010876810001154X
_journal_volume                  56
_journal_year                    2000
_chemical_formula_moiety         'C27 H20 O'
_chemical_formula_sum            'C27 H20 O'
_chemical_formula_weight         360.43
_chemical_melting_point          157
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                100.450(2)
_cell_angle_beta                 97.790(2)
_cell_angle_gamma                95.477(2)
_cell_formula_units_Z            2
_cell_length_a                   5.6413(3)
_cell_length_b                   10.2599(5)
_cell_length_c                   17.3238(9)
_cell_measurement_reflns_used    927
_cell_measurement_temperature    150
_cell_measurement_theta_max      26.52
_cell_measurement_theta_min      10.15
_cell_volume                     969.51(9)
_computing_cell_refinement       'Bruker SMART (Bruker Systems Inc., 1999a)'
_computing_data_collection       'Bruker SMART (Bruker Systems Inc., 1999a)'
_computing_data_reduction        'Bruker SAINT (Bruker Systems Inc., 1999b)'
_computing_molecular_graphics    'SHELXL97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150
_diffrn_detector_area_resol_mean 'not relevant'
_diffrn_measured_fraction_theta_full 0.899
_diffrn_measured_fraction_theta_max 0.899
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       \w
_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  0.0426
_diffrn_reflns_av_sigmaI/netI    0.0486
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            12424
_diffrn_reflns_theta_full        30.45
_diffrn_reflns_theta_max         30.45
_diffrn_reflns_theta_min         1.21
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.884
_exptl_absorpt_correction_T_min  0.681
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   '(XPREP in SHELX97; Sheldrick, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.235
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             380
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.503
_refine_diff_density_min         -0.433
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     322
_refine_ls_number_reflns         5270
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.1171
_refine_ls_R_factor_gt           0.0759
_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^)+(0.1193P)^2^+0.5780P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2025
_refine_ls_wR_factor_ref         0.2336
_reflns_number_gt                3419
_reflns_number_total             5270
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            bm0034.cif
_cod_data_source_block           5
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               2102182