3-Benzylidene-6-methoxychroman-4-one
Augustine, T.; Vithiya, Scholastica Mary; Ramkumar, V.; Kanakam, Charles C.; Acta Crystallographica Section E 64 (2008) o2080–; doi:10.1107/S1600536808031541

data_2219849
_publ_section_title
;
 3-Benzylidene-6-methoxychroman-4-one
;
_journal_coeditor_code           FL2222
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2080
_journal_paper_doi               10.1107/S1600536808031541
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C17 H14 O3'
_chemical_formula_moiety         'C17 H14 O3'
_chemical_formula_sum            'C17 H14 O3'
_chemical_formula_weight         266.28
_chemical_name_systematic
;
3-Benzylidene-6-methoxychroman-4-one
;
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                95.9640(10)
_cell_angle_beta                 103.8280(10)
_cell_angle_gamma                104.0420(10)
_cell_formula_units_Z            2
_cell_length_a                   7.2678(2)
_cell_length_b                   8.3151(2)
_cell_length_c                   11.7999(4)
_cell_measurement_reflns_used    4851
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      28.28
_cell_measurement_theta_min      2.56
_cell_volume                     661.74(3)
_computing_cell_refinement       'SAINT-Plus (Bruker, 2004)'
_computing_data_collection       'APEX2 (Bruker, 2004)'
_computing_data_reduction        'SAINT-Plus (Bruker, 2004)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material
'SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.943
_diffrn_measurement_device_type  'Bruker APEXII CCD area-detector'
_diffrn_measurement_method       '\f and \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  0.0177
_diffrn_reflns_av_sigmaI/netI    0.0184
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            8868
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         2.56
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.9662
_exptl_absorpt_correction_T_min  0.9601
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 1999)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.336
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             280
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.38
_refine_diff_density_max         0.245
_refine_diff_density_min         -0.233
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     186
_refine_ls_number_reflns         3041
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0510
_refine_ls_R_factor_gt           0.0389
_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^)+(0.0554P)^2^+0.1403P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1048
_refine_ls_wR_factor_ref         0.1159
_reflns_number_gt                2404
_reflns_number_total             3041
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fl2222.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_Hall     '-p 1'
_cod_database_code               2219849
_cod_database_fobs_code          2219849