Methylene-Bridged Glycoluril Dimers: Synthetic Methods
Anxin Wu; Arindam Chakraborty; Dariusz Witt; Jason Lagona; Fehmi Damkaci; Marie A. Ofori; Jessica K. Chiles; James C. Fettinger; Lyle Isaacs; Journal of Organic Chemistry 67 (2002) 5817–5830; doi:10.1021/jo0258958

data_4022243
_publ_section_title
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 Methylene-Bridged Glycoluril Dimers: Synthetic Methods
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5817
_journal_page_last               5830
_journal_paper_doi               10.1021/jo0258958
_journal_volume                  67
_journal_year                    2002
_chemical_formula_sum            'C46 H54 N10 O12'
_chemical_formula_weight         938.99
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 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                   10.7933(9)
_cell_length_b                   26.350(2)
_cell_length_c                   16.7931(14)
_cell_measurement_temperature    193(2)
_cell_volume                     4776.1(7)
_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      193(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0378
_diffrn_reflns_av_sigmaI/netI    0.0242
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            71583
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.04
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_type   'Empirical, SADABS'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.306
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1984
_exptl_crystal_size_max          0.339
_exptl_crystal_size_mid          0.305
_exptl_crystal_size_min          0.288
_refine_diff_density_max         0.364
_refine_diff_density_min         -0.303
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.4(7)
_refine_ls_extinction_coef       0.0007(3)
_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   1.065
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     696
_refine_ls_number_reflns         10935
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0586
_refine_ls_R_factor_gt           0.0422
_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^)+(0.0621P)^2^+0.9988P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1078
_refine_ls_wR_factor_ref         0.1189
_reflns_number_gt                9134
_reflns_number_total             10935
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo0258958_s2_2.cif
_cod_data_source_block           38c
_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               4022243