<i>rac</i>-3-(4-Hydroxybenzyl)chroman-4-one
Shalini, S.; Girija, C. R.; Simon, Lalitha; Srinivasan, K. K.; Venkatesha, T. V.; Acta Crystallographica Section E 69 (2013) o1011–o1012; doi:10.1107/S1600536813014645

data_2238302
_publ_section_title
;
 <i>rac</i>-3-(4-Hydroxybenzyl)chroman-4-one
;
_journal_coeditor_code           ZS2259
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1011
_journal_page_last               o1012
_journal_paper_doi               10.1107/S1600536813014645
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C16 H14 O3'
_chemical_formula_moiety         'C16 H14 O3'
_chemical_formula_sum            'C16 H14 O3'
_chemical_formula_weight         254.27
_chemical_name_systematic
;
<i>rac</i>-3-(4-Hydroxybenzyl)chroman-4-one
;
_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           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.806(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.2570(2)
_cell_length_b                   17.0254(7)
_cell_length_c                   14.6879(5)
_cell_measurement_reflns_used    3775
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      23.5
_cell_measurement_theta_min      2.5
_cell_volume                     1302.42(9)
_computing_cell_refinement       'APEX2 and SAINT (Bruker, 2004)'
_computing_data_collection       'APEX2 (Bruker, 2004)'
_computing_data_reduction        'SAINT and XPREP (Bruker, 2004)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 2012)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR92 (Altomare <i>et al.</i>, 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Kappa APEX2 CCD'
_diffrn_measurement_method       '\w and \f scan'
_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  0.0259
_diffrn_reflns_av_sigmaI/netI    0.0204
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12297
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.39
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.991
_exptl_absorpt_correction_T_min  0.962
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2004)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.297
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             536
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.132
_refine_diff_density_min         -0.111
_refine_ls_extinction_coef       0.0066(15)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.108
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     187
_refine_ls_number_reflns         2288
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.111
_refine_ls_R_factor_all          0.0685
_refine_ls_R_factor_gt           0.0411
_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^)+(0.0283P)^2^+0.4082P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0942
_refine_ls_wR_factor_ref         0.1097
_reflns_number_gt                1523
_reflns_number_total             2288
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            zs2259.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2238302
_cod_database_fobs_code          2238302