1,3:4,6-Bis(1,4-diphenylethynyl-2,3-xylylene)tetrahydro-3a,6a-bis(ethoxycarbonyl)imidazo[4,5-<i>d</i>]imidazole-2,5(1<i>H</i>,3H)-dione, a molecular clip based on di(ethoxycarbonyl)glycoluril
Neng-Fang She; Hui-Zhen Guo; An-Xin Wu; Acta Crystallographica Section E 61 (2005) o2003–o2004; doi:10.1107/S1600536805017162

data_2206327
_publ_section_title
;1,3:4,6-Bis(1,4-diphenylethynyl-2,3-xylylene)tetrahydro-3a,6a-bis(ethoxycarbonyl)imidazo[4,5-<i>d</i>]imidazole-2,5(1<i>H</i>,3H)-dione,
 a molecular clip based on di(ethoxycarbonyl)glycoluril
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2003
_journal_page_last               o2004
_journal_paper_doi               10.1107/S1600536805017162
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C58 H42 N4 O6'
_chemical_formula_moiety         'C58 H42 N4 O6'
_chemical_formula_sum            'C58 H42 N4 O6'
_chemical_formula_weight         890.96
_chemical_melting_point          489
_chemical_name_systematic
;
1,3:4,6-Bis(1,4-diphenylethynyl-2,3-xylylene)tetrahydro-3a,6a-
bis(ethoxycarbonyl)imidazo[4,5-d]imidazole-2,5(1H,3H)-dione
;
_space_group_IT_number           56
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ab 2ac'
_symmetry_space_group_name_H-M   'P c c n'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   22.0779(17)
_cell_length_b                   11.0552(9)
_cell_length_c                   18.9962(15)
_cell_measurement_reflns_used    3666
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      20.0
_cell_measurement_theta_min      2.3
_cell_volume                     4636.5(6)
_computing_cell_refinement       'SAINT (Bruker, 1999)'
_computing_data_collection       'SMART (Bruker, 1997)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      292(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART 4K CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.067
_diffrn_reflns_av_sigmaI/netI    0.043
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            25639
_diffrn_reflns_theta_full        25.0
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         1.8
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.08
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1864
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.46
_refine_diff_density_min         -0.22
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.05
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     309
_refine_ls_number_reflns         4109
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.05
_refine_ls_R_factor_all          0.101
_refine_ls_R_factor_gt           0.062
_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^)+(0.0821P)^2^+1.2253P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.155
_refine_ls_wR_factor_ref         0.174
_reflns_number_gt                2611
_reflns_number_total             4109
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ya6247.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_Hall     '-P 2ab2ac'
_cod_database_code               2206327
_cod_database_fobs_code          2206327