Cyclic tetraureas with variable flexibility ‒ synthesis, crystal structures and properties
Meshcheryakov, Denys; Arnaud-Neu, Françoise; Böhmer, Volker; Bolte, Michael; Cavaleri, Julien; Hubscher-Bruder, Véronique; Thondorf, Iris; Werner, Sabine; Organic & Biomolecular Chemistry 6 (2008) 3244–3255; doi:10.1039/b808773c

data_7150989
_publ_section_title
;
 Cyclic tetraureas with variable flexibility -- synthesis, crystal
 structures and properties
;
_journal_issue                   18
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_page_first              3244
_journal_page_last               3255
_journal_paper_doi               10.1039/b808773c
_journal_volume                  6
_journal_year                    2008
_chemical_formula_sum            'C72 H80 N8 O13'
_chemical_formula_weight         1265.44
_chemical_name_systematic        ?
_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                 93.206(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   25.808(2)
_cell_length_b                   19.667(2)
_cell_length_c                   25.792(2)
_cell_measurement_reflns_used    23300
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      23.6
_cell_measurement_theta_min      1.5
_cell_volume                     13071(2)
_computing_cell_refinement       'X-Area (Stoe & Cie, 2001)'
_computing_data_collection       'X-Area (Stoe & Cie, 2001)'
_computing_data_reduction        'X-Area (Stoe & Cie, 2001)'
_computing_molecular_graphics    'XP in SHELXTL-Plus (Sheldrick, 1991)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997) '
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990) '
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.944
_diffrn_measured_fraction_theta_max 0.944
_diffrn_measurement_device_type  'STOE IPDS II two-circle-diffractometer'
_diffrn_measurement_method       \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  0.1890
_diffrn_reflns_av_sigmaI/netI    0.2556
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            112990
_diffrn_reflns_theta_full        25.96
_diffrn_reflns_theta_max         25.96
_diffrn_reflns_theta_min         1.58
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9885
_exptl_absorpt_correction_T_min  0.9720
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.286
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             5376
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.199
_refine_diff_density_min         -0.213
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.562
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1675
_refine_ls_number_reflns         24137
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.562
_refine_ls_R_factor_all          0.2012
_refine_ls_R_factor_gt           0.0476
_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^)+(0.0000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0663
_refine_ls_wR_factor_ref         0.0915
_reflns_number_gt                5702
_reflns_number_total             24137
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b808773c.txt
_cod_data_source_block           boeh19
_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 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7150989