Locating the Cyclopentano Cousins of the Cucurbit[n]uril Family
Feng Wu; Li-Hui Wu; Xin Xiao; Yun-Qian Zhang; Sai-Feng Xue; Zhu Tao; Anthony I. Day; Journal of Organic Chemistry 77 (2012) 606–611; doi:10.1021/jo2021778

data_4026874
_publ_section_title
;
 Locating the Cyclopentano Cousins of the Cucurbit[n]uril Family
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              606
_journal_page_last               611
_journal_paper_doi               10.1021/jo2021778
_journal_volume                  77
_journal_year                    2012
_chemical_formula_sum            'C12 H16 N4 O4'
_chemical_formula_weight         280.29
_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                 114.964(18)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.402(3)
_cell_length_b                   11.908(4)
_cell_length_c                   13.721(4)
_cell_measurement_temperature    293(2)
_cell_volume                     1244.5(7)
_computing_cell_refinement       'SAINT (Bruker, 2002)'
_computing_data_collection       'SMART (Bruker, 2002)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker SMART CCD Area Detector'
_diffrn_measurement_method       '\f and \w scan'
_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  0.0266
_diffrn_reflns_av_sigmaI/netI    0.0215
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14209
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         2.37
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.496
_exptl_crystal_description       block
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.188
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   2.366
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     181
_refine_ls_number_reflns         2807
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      2.366
_refine_ls_R_factor_all          0.0498
_refine_ls_R_factor_gt           0.0403
_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^)+(0.0100P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0741
_refine_ls_wR_factor_ref         0.0754
_reflns_number_gt                2325
_reflns_number_total             2807
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo2021778_si_002.cif
_cod_data_source_block           p
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4026874