Total Syntheses of All Stereoisomers of Phenatic Acid B
Rodney A. Fernandes; Asim K. Chowdhury; Journal of Organic Chemistry 74 (2009) 8826–8829; doi:10.1021/jo901927w

data_4025067
_publ_section_title
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Total Syntheses of All Stereoisomers of Phenatic Acid B
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_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8826
_journal_page_last               8829
_journal_paper_doi               10.1021/jo901927w
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C16 H20 O4'
_chemical_formula_weight         276.32
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.2341(17)
_cell_length_b                   9.967(3)
_cell_length_c                   18.314(4)
_cell_measurement_reflns_used    1198
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      32.1755
_cell_measurement_theta_min      3.0132
_cell_volume                     1503.0(6)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd.,'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_molecular_graphics    Ortep3
_computing_publication_material  Shelx97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 15.9948
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'OXFORD DIFFRACTION XCALIBUR-S'
_diffrn_measurement_method       \w/q-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0468
_diffrn_reflns_av_sigmaI/netI    0.0465
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            7257
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9786
_exptl_absorpt_correction_T_min  0.9711
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;

CrysAlis RED, Oxford Diffraction Ltd.,

Version 1.171.32.15 (release 10-01-2008 CrysAlis171 .NET)

(compiled Jan 10 2008,16:37:18)

Empirical absorption correction using spherical harmonics,

 implemented in SCALE3 ABSPACK scaling algorithm.

;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.221
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.179
_refine_diff_density_min         -0.249
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   2(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.007
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     212
_refine_ls_number_reflns         2583
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.007
_refine_ls_R_factor_all          0.0819
_refine_ls_R_factor_gt           0.0514
_refine_ls_shift/su_max          0.038
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0966P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1355
_refine_ls_wR_factor_ref         0.1582
_reflns_number_gt                1749
_reflns_number_total             2583
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo901927w_si_003.cif
_cod_data_source_block           raf002_COMPOUND_16a
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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 
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_cod_database_code               4025067