Stereoselective Synthesis of meso-1,5-Cyclodecadiynes
Gagik G. Melikyan; Ryan Spencer; Edwin Abedi; Journal of Organic Chemistry 74 (2009) 8541–8546; doi:10.1021/jo901404f

data_4024980
_publ_section_title
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Stereoselective Synthesis of meso-1,5-Cyclodecadiynes
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_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8541
_journal_page_last               8546
_journal_paper_doi               10.1021/jo901404f
_journal_volume                  74
_journal_year                    2009
_chemical_formula_moiety         'C26 H28 O4'
_chemical_formula_sum            'C26 H28 O4'
_chemical_formula_weight         404.48
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   13.9575(7)
_cell_length_b                   10.1923(5)
_cell_length_c                   30.3753(15)
_cell_measurement_reflns_used    9930
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      65.79
_cell_measurement_theta_min      4.30
_cell_volume                     4321.2(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.963
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0249
_diffrn_reflns_av_sigmaI/netI    0.0129
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            35907
_diffrn_reflns_theta_full        66.28
_diffrn_reflns_theta_max         66.28
_diffrn_reflns_theta_min         2.91
_exptl_absorpt_coefficient_mu    0.661
_exptl_absorpt_correction_T_max  0.8959
_exptl_absorpt_correction_T_min  0.7641
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.243
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             1728
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.165
_refine_diff_density_min         -0.134
_refine_diff_density_rms         0.028
_refine_ls_extinction_coef       0.00093(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         3655
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0369
_refine_ls_R_factor_gt           0.0327
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0550P)^2^+1.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0919
_refine_ls_wR_factor_ref         0.0952
_reflns_number_gt                3253
_reflns_number_total             3655
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo901404f_si_003.cif
_cod_data_source_block           RS_83s
_cod_depositor_comments
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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_original_sg_symbol_H-M      Pbca
_cod_database_code               4024980