(±)-<i>trans</i>-3-Oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-10a-carboxylic acid: catemeric hydrogen bonding in a δ-keto acid
Davison, Mark; Lalancette, Roger A.; Thompson, Hugh W.; Miller, Alan J.; Acta Crystallographica Section E 64 (2008) o1813–; doi:10.1107/S1600536808026639

data_2219332
_publ_section_title
;(+-)-<i>trans</i>-3-Oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-10a-carboxylic
 acid: catemeric hydrogen bonding in a \d-keto acid
;
_journal_coeditor_code           FL2217
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1813
_journal_paper_doi               10.1107/S1600536808026639
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C15 H16 O3'
_chemical_formula_moiety         'C15 H16 O3'
_chemical_formula_sum            'C15 H16 O3'
_chemical_formula_weight         244.28
_chemical_melting_point          460
_chemical_name_systematic
;
(+-)-<i>trans</i>-3-Oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-
10a-carboxylic acid
;
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 102.6764(19)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.7172(4)
_cell_length_b                   12.2735(6)
_cell_length_c                   10.4867(5)
_cell_measurement_reflns_used    4354
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      67.30
_cell_measurement_theta_min      4.32
_cell_volume                     1220.20(10)
_computing_cell_refinement       'APEX2 (Bruker, 2006)'
_computing_data_collection       'APEX2 (Bruker, 2006)'
_computing_data_reduction        'SAINT (Bruker, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.951
_diffrn_measured_fraction_theta_max 0.951
_diffrn_measurement_device_type  'Bruker SMART CCD APEXII area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.019
_diffrn_reflns_av_sigmaI/netI    0.021
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            7219
_diffrn_reflns_theta_full        67.80
_diffrn_reflns_theta_max         67.80
_diffrn_reflns_theta_min         5.63
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.744
_exptl_absorpt_correction_T_max  0.7754
_exptl_absorpt_correction_T_min  0.7500
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2001)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.330
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.25
_refine_diff_density_min         -0.20
_refine_ls_extinction_coef       0.0050(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXTL (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.05
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         2106
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.05
_refine_ls_R_factor_all          0.041
_refine_ls_R_factor_gt           0.039
_refine_ls_shift/su_max          0.00
_refine_ls_shift/su_mean         0.00
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.061P)^2^+0.4428P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.107
_refine_ls_wR_factor_ref         0.108
_reflns_number_gt                2019
_reflns_number_total             2106
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fl2217.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 'Monoclinic' changed to 'monoclinic'
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/n'
_cod_database_code               2219332
_cod_database_fobs_code          2219332