An approach to networks based on coordination of alkyl-substituted cucurbit[5]urils and potassium ions
Li, Zhong-Fei; Liang, Li-Li; Wu, Feng; Zhou, Fa-Gen; Ni, Xin-Long; Feng, Xing; Xiao, Xin; Zhang, Yun-Qian; Xue, Sai-Feng; Zhu, Qian-Jiang; Clegg, Jack K.; Tao, Zhu; Lindoy, Leonard F.; Wei, Gang; CrystEngComm 15 (2013) 1994–; doi:10.1039/c3ce26491b

data_7209260
_publ_section_title
;
 An approach to networks based on coordination of alkyl-substituted
 cucurbit[5]urils and potassium ions
;
_journal_issue                   10
_journal_name_full               CrystEngComm
_journal_page_first              1994
_journal_paper_doi               10.1039/c3ce26491b
_journal_volume                  15
_journal_year                    2013
_chemical_formula_sum            'C42 H70 I2 K2 N20 O21'
_chemical_formula_weight         1523.18
_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                 93.448(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            12
_cell_length_a                   23.8792(8)
_cell_length_b                   34.9081(13)
_cell_length_c                   20.2709(8)
_cell_measurement_temperature    223(2)
_cell_volume                     16866.8(11)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Bruker 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  0.0647
_diffrn_reflns_av_sigmaI/netI    0.0973
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       -41
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            90480
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.03
_exptl_absorpt_coefficient_mu    1.363
_exptl_absorpt_correction_T_max  0.8114
_exptl_absorpt_correction_T_min  0.7268
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.799
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             9288
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_platon_squeeze_details
;
;
_refine_diff_density_max         2.524
_refine_diff_density_min         -3.755
_refine_diff_density_rms         0.161
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     2086
_refine_ls_number_reflns         29160
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.1388
_refine_ls_R_factor_gt           0.0934
_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^)+(0.1842P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2628
_refine_ls_wR_factor_ref         0.2946
_reflns_number_gt                16085
_reflns_number_total             29160
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce26491b.txt
_cod_data_source_block           squeezed
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7209260