Conformations of substituted benzophenones
Cox, Philip J.; Kechagias, Dimitrios; Kelly, Orla; Acta Crystallographica Section B 64 (2008) 206–216; doi:10.1107/S0108768108000232

data_2104096
_publ_section_title
;
 Conformations of substituted benzophenones
;
_journal_coeditor_code           WS5060
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              206
_journal_page_last               216
_journal_paper_doi               10.1107/S0108768108000232
_journal_volume                  64
_journal_year                    2008
_chemical_formula_moiety         'C15 H14 O5'
_chemical_formula_sum            'C15 H14 O5'
_chemical_formula_weight         274.26
_chemical_name_common
;
2,2'-dihydroxy-4,4'-dimethoxybenzophenone
;
_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'
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 92.545(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   3.84660(10)
_cell_length_b                   25.1521(12)
_cell_length_c                   12.9802(6)
_cell_measurement_reflns_used    5660
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1254.60(9)
_computing_cell_refinement       'DENZO and COLLECT'
_computing_data_collection
;
        DENZO (Otwinowski and Minor, 1997), COLLECT (Hooft, 1998)
;
_computing_data_reduction        'DENZO and COLLECT'
_computing_molecular_graphics
;
        PLATON (Spek,2002)
;
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al.,1999)'
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type
;
        Bruker-Nonius 95mm CCD camers on \k-goniostat
;
_diffrn_measurement_method
;
        \f and \w scans to fill Ewald sphere
;
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0831
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            13532
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.14
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.11
_exptl_absorpt_correction_T_max  0.9935
_exptl_absorpt_correction_T_min  0.7267
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
using multiple and symmetry-related data measurements via the program
SORTAV (Blessing, 1995, 1997)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.452
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.228
_refine_diff_density_min         -0.297
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.992
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     189
_refine_ls_number_reflns         2798
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_gt           0.0472
_refine_ls_shift/su_max          0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0601P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1188
_reflns_number_gt                1759
_reflns_number_total             2798
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ws5060.cif
_cod_data_source_block           2d4d
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2104096
_cod_database_fobs_code          2104096