β-(3,6,9-Trimethyl-9-xanthenyl)propionic acid
Janusz B. Kyzioł; Ewa M. Nowakowska; Zaleski, Jacek; Acta Crystallographica Section E 63 (2007) o2834–o2834; doi:10.1107/S1600536807021332

data_2213785
_publ_section_title
;
 \b-(3,6,9-Trimethyl-9-xanthenyl)propionic acid
;
_journal_coeditor_code           HB2378
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2834
_journal_page_last               o2834
_journal_paper_doi               10.1107/S1600536807021332
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C19 H20 O3'
_chemical_formula_moiety         'C19 H20 O3'
_chemical_formula_sum            'C19 H20 O3'
_chemical_formula_weight         296.35
_chemical_name_systematic
;
\b-(3,6,9-Trimethyl-9-xanthenyl)propionic acid
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 110.645(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.5042(9)
_cell_length_b                   14.3969(11)
_cell_length_c                   11.2404(9)
_cell_measurement_reflns_used    4075
_cell_measurement_temperature    85.0(2)
_cell_measurement_theta_max      29.44
_cell_measurement_theta_min      2.69
_cell_volume                     1590.7(2)
_computing_cell_refinement       'CrysAlis RED (Oxford Diffraction, 2002)'
_computing_data_collection       'CrysAlis CCD (Oxford Diffraction, 2002)'
_computing_data_reduction        'CrysAlis RED'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1990)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      85.0(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.924
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur'
_diffrn_measurement_method       \w-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  0.0171
_diffrn_reflns_av_sigmaI/netI    0.0296
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            12735
_diffrn_reflns_theta_full        28.00
_diffrn_reflns_theta_max         29.44
_diffrn_reflns_theta_min         2.69
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.237
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.321
_refine_diff_density_min         -0.227
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     279
_refine_ls_number_reflns         4075
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0543
_refine_ls_R_factor_gt           0.0357
_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^)+(0.0677P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0958
_refine_ls_wR_factor_ref         0.1046
_reflns_number_gt                2929
_reflns_number_total             4411
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            hb2378.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_exptl_absorpt_correction_type' value 'NONE' changed to 'none' according
to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

'_geom_angle_publ_flag'
value 'Y' changed to 'y' 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:

'_exptl_absorpt_correction_type' value 'NONE' changed to 'none'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_geom_angle_publ_flag' value 'Y' changed to 'y'
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_H-M      'P 21/c'
_cod_database_code               2213785
_cod_database_fobs_code          2213785