The Bicyclic N,N'-Diacylaminal: A New Motif for Molecular Self-Assembly
Robert B. Grossman; Kazuyuki Hattori; Sean Parkin; Brian O. Patrick; Melissa A. Varner; Journal of the American Chemical Society 124 (2002) 13686–13687; doi:10.1021/ja026949y

data_4115313
_publ_section_title
;
 The Bicyclic N,N'-Diacylaminal: A New Motif for Molecular Self-Assembly
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13686
_journal_page_last               13687
_journal_paper_doi               10.1021/ja026949y
_journal_volume                  124
_journal_year                    2002
_chemical_formula_sum            'C18 H26 Cl4 N2 O6'
_chemical_formula_weight         508.21
_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                   17.9780(5)
_cell_length_b                   12.3910(6)
_cell_length_c                   10.3330(8)
_cell_measurement_reflns_used    11242
_cell_measurement_temperature    90.0(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     2301.8(2)
_computing_cell_refinement       'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP in Siemens SHELXTL (Sheldrick, 1994)'
_computing_publication_material
;
SHELX97-2 (Sheldrick, 1997) and local procedures
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      90.0(2)
_diffrn_detector_area_resol_mean 18
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Nonius KappaCCD diffractometer'
_diffrn_measurement_method       '\w scans at fixed \c = 55\%'
_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  0.0345
_diffrn_reflns_av_sigmaI/netI    0.0502
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            11116
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.00
_diffrn_standards_decay_%        <1
_exptl_absorpt_coefficient_mu    0.551
_exptl_absorpt_correction_T_max  0.9470
_exptl_absorpt_correction_T_min  0.8522
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.466
_exptl_crystal_description       'block (cut fromm needle)'
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         .253
_refine_diff_density_min         -.254
_refine_diff_density_rms         .052
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     274
_refine_ls_number_reflns         4322
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0441
_refine_ls_R_factor_gt           0.0358
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0275P)^2^+0.4907P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0665
_refine_ls_wR_factor_ref         0.0691
_reflns_number_gt                3858
_reflns_number_total             4322
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja026949y-3_s2_6.cif
_cod_data_source_block           (2a).(CH2Cl2)2
_cod_database_code               4115313