Isostructuralism in a series of methylester/methylamide derivatives of (<i>R</i>,<i>R</i>)-<i>O</i>,<i>O</i>'-dibenzoyl tartaric acid; inclusion properties and guest-dependent homeotypism of the crystals of (<i>R</i>,<i>R</i>)-<i>O</i>,<i>O</i>'-dibenzoyltartaric acid diamide
Rychlewska, Urszula; Warżajtis, Beata; Acta Crystallographica Section B 58 (2002) 265–271; doi:10.1107/S0108768101019334

data_2103260
_publ_section_title
;
 Isostructuralism in a series of methylester/methylamide derivatives of
 (<i>R</i>,<i>R</i>)-<i>O</i>,<i>O</i>'-dibenzoyl tartaric acid;
 inclusion properties and guest-dependent homeotypism of the crystals
 of (<i>R</i>,<i>R</i>)-<i>O</i>,<i>O</i>'-dibenzoyltartaric acid
 diamide
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              265
_journal_page_last               271
_journal_paper_doi               10.1107/S0108768101019334
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C20 H20 N2 O6'
_chemical_formula_sum            'C20 H20 N2 O6'
_chemical_formula_weight         384.38
_chemical_name_systematic
;
(R,R)-(-)-O,O'-Dibenzoyltartaric acid N,N'-dimethyldiamide
;
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 2ab'
_symmetry_space_group_name_H-M   'P 21 21 2'
_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            2
_cell_length_a                   10.282(2)
_cell_length_b                   18.024(4)
_cell_length_c                   5.1360(10)
_cell_measurement_reflns_used    15
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      14.20
_cell_measurement_theta_min      10.54
_cell_volume                     951.8(3)
_computing_cell_refinement       'SYNTEX XTL Operation Manual'
_computing_data_collection       'SYNTEX Operation Manual'
_computing_data_reduction        PRARA
_computing_molecular_graphics    'Simens Analytical X-Ray Instruments (1989)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.966
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'Syntex P21 diffractometer'
_diffrn_measurement_method       \Q--2\Q
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0383
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            1097
_diffrn_reflns_theta_full        26.06
_diffrn_reflns_theta_max         26.06
_diffrn_reflns_theta_min         2.26
_diffrn_standards_decay_%        3.57
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  0.9706
_exptl_absorpt_correction_T_min  0.9516
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.341
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             404
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.162
_refine_diff_density_min         -0.166
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack
;
The absolute structure of the crystals was assumed from the known absolute
configuration of the reagents used in the synthesis.
;
_refine_ls_extinction_coef       0.029(8)
_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   1.083
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         1097
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0813
_refine_ls_R_factor_gt           0.0452
_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^)+(0.0827P)^2^+0.1003P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1253
_refine_ls_wR_factor_ref         0.1350
_reflns_number_gt                798
_reflns_number_total             1097
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            na0128.cif
_cod_data_source_block           BN22
_cod_database_code               2103260