Crystal structure of 2-[6-(2-formylphenoxy)-2,4-hexadiynyloxy]benzaldehyde, C~20~H~14~O~4~
Werz, D. B.; Balalaie, S.; Rominger, F.; Oloumi, Z.; Zeitschrift für Kristallographie - New Crystal Structures 221 (2006) 339–340; doi:

data_8102004
_publ_section_title
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Crystal structure of 2-[6-(2-formylphenoxy)-2,4-hexadiynyloxy]benzaldehyde, 
C~20~H~14~O~4~
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_journal_issue                   3
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              339
_journal_page_last               340
_journal_volume                  221
_journal_year                    2006
_chemical_formula_sum            'C20 H14 O4'
_chemical_formula_weight         318.31
_chemical_name_systematic
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 2-[6-(2-formylphenoxy)-2,4-hexadiynyloxy]benzaldehyde
;
_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                 104.213(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.5632(6)
_cell_length_b                   4.3769(2)
_cell_length_c                   14.8059(8)
_cell_measurement_temperature    200(2)
_cell_volume                     789.22(7)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       phi/omega
_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  0.0728
_diffrn_reflns_av_sigmaI/netI    0.0634
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            5840
_diffrn_reflns_theta_full        24.41
_diffrn_reflns_theta_max         24.41
_diffrn_reflns_theta_min         1.67
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  0.9944
_exptl_absorpt_correction_T_min  0.9725
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, Acta Cryst. (1995) A51 33-38.'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.339
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       polyhedron
_exptl_crystal_F_000             332
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.165
_refine_diff_density_min         -0.190
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1273
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.0885
_refine_ls_R_factor_gt           0.0533
_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^)+(0.0513P)^2^+0.3721P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1288
_refine_ls_wR_factor_ref         0.1446
_reflns_number_gt                835
_reflns_number_total             1273
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1267-1819.cff
_cod_data_source_block           sba9
_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 1555 2011-01-17 13:19:09Z saulius 
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_cod_original_sg_symbol_H-M      P12(1)/c1
_cod_database_code               8102004