Crystal structures of self-assembled nanotubes from flexible macrocycles by weak interactions
Carrillo, Romen; López-Rodríguez, Matías; Martín, Víctor S.; Martín, Tomás; CrystEngComm 12 (2010) 3676–; doi:10.1039/c001261k

data_7212518
_publ_section_title
;
 Crystal structures of self-assembled nanotubes from flexible macrocycles
 by weak interactions
;
_journal_issue                   11
_journal_name_full               CrystEngComm
_journal_page_first              3676
_journal_paper_doi               10.1039/c001261k
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C32 H48 O16'
_chemical_formula_weight         688.70
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 115.28(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.052(2)
_cell_length_b                   27.546(6)
_cell_length_c                   9.808(3)
_cell_measurement_temperature    293(2)
_cell_volume                     2211.4(10)
_computing_molecular_graphics    'PLATON (A.L. Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Giacovazzo et atl., 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.949
_diffrn_measured_fraction_theta_max 0.949
_diffrn_measurement_device_type  'Enraf-Nonius KappaCCD diffractometer'
_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    0.0645
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            4390
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.30
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.034
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular shaped'
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.299
_refine_diff_density_min         -0.268
_refine_diff_density_rms         0.071
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0(10)
_refine_ls_extinction_coef       0.15(2)
_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   0.987
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     434
_refine_ls_number_reflns         4390
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.987
_refine_ls_R_factor_all          0.1177
_refine_ls_R_factor_gt           0.0868
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1830P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2360
_refine_ls_wR_factor_ref         0.2560
_reflns_number_gt                2579
_reflns_number_total             4390
_reflns_threshold_expression     >4sigma(I)
_cod_data_source_file            c001261k.txt
_cod_data_source_block           cis-TETRAMER(34)
_cod_original_sg_symbol_H-M      P21
_cod_database_code               7212518