Separation of xylenes by enclathration
Luigi R. Nassimbeni; Nikoletta B. Bathori; Leena Desiree Patel; Hong Su; Edwin Weber; Chem.Commun. 51 (2015) 3627–; doi:10.1039/C4cc05329J

data_7116542
_publ_section_title
;
 Separation of xylenes by enclathration
;
_journal_name_full               Chem.Commun.
_journal_page_first              3627
_journal_paper_doi               10.1039/C4cc05329J
_journal_volume                  51
_journal_year                    2015
_chemical_formula_sum            'C32 H23'
_chemical_formula_weight         407.50
_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                 100.42(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.154(3)
_cell_length_b                   9.1925(18)
_cell_length_c                   17.307(4)
_cell_measurement_reflns_used    5254
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.93
_cell_measurement_theta_min      1.46
_cell_volume                     2214.7(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_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  0.0280
_diffrn_reflns_av_sigmaI/netI    0.0464
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            10258
_diffrn_reflns_theta_full        27.93
_diffrn_reflns_theta_max         27.93
_diffrn_reflns_theta_min         1.46
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.222
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             860
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.209
_refine_diff_density_min         -0.197
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         5254
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0896
_refine_ls_R_factor_gt           0.0497
_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^)+(0.0551P)^2^+0.2345P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1120
_refine_ls_wR_factor_ref         0.1304
_reflns_number_gt                3301
_reflns_number_total             5254
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc05329j2.cif
_cod_data_source_block           h1pxylene
_cod_original_cell_volume        2214.8(8)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7116542