A comparison of the ring conformational properties of two derivatives prepared from the same diene diacetate precursor
Ilia A. Guzei; Robert W. Clark; Steven D. Burke; William T. Lambert; Acta Crystallographica Section C 59 (2003) o721–o723; doi:10.1107/S0108270103025757

data_2013698
_publ_section_title
;
 A comparison of the ring conformational properties of two derivatives
 prepared from the same diene diacetate precursor
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o721
_journal_page_last               o723
_journal_paper_doi               10.1107/S0108270103025757
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C22 H26 O5'
_chemical_formula_moiety         'C22 H26 O5'
_chemical_formula_sum            'C22 H26 O5'
_chemical_formula_weight         370.43
_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
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_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.5273(5)
_cell_length_b                   13.4315(13)
_cell_length_c                   26.074(2)
_cell_measurement_reflns_used    3927
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      50.0
_cell_measurement_theta_min      2.0
_cell_volume                     1935.7(3)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2000--2003)'
_computing_data_reduction        'SAINT? and SHELXTL (Bruker, 2000--2003)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Bruker CCD 1000 area-detector'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0446
_diffrn_reflns_av_sigmaI/netI    0.0275
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_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            10541
_diffrn_reflns_theta_full        26.38
_diffrn_reflns_theta_max         26.38
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9737
_exptl_absorpt_correction_T_min  0.9329
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
(SADABS; Blessing, 1995)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.271
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.340
_refine_diff_density_min         -0.204
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         2262
_refine_ls_number_restraints     0
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_refine_ls_R_factor_all          0.0561
_refine_ls_R_factor_gt           0.0497
_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^)+(0.1041P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1315
_refine_ls_wR_factor_ref         0.1353
_reflns_number_gt                1973
_reflns_number_total             2262
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sq1137.cif
_cod_data_source_block           I
_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 

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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               2013698
_cod_database_fobs_code          2013698