Peptoid nanotubes: an oligomer macrocycle that reversibly sequesters water via single-crystal-to-single-crystal transformations
Sidonie B. L. Vollrath; Chunhua Hu; Stefan Brase; Kent Kirshenbaum; Chem.Commun. 49 (2013) 2317–; doi:10.1039/c3cc37163h

data_7108960
_publ_section_title
;
 Peptoid nanotubes: an oligomer macrocycle that reversibly sequesters
 water via single-crystal-to-single-crystal transformations
;
_journal_name_full               Chem.Commun.
_journal_page_first              2317
_journal_paper_doi               10.1039/c3cc37163h
_journal_volume                  49
_journal_year                    2013
_chemical_formula_sum            'C52 H56 N8 O10'
_chemical_formula_weight         953.05
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 106.8860(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   26.3406(11)
_cell_length_b                   8.8751(4)
_cell_length_c                   22.0453(9)
_cell_measurement_reflns_used    9925
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      28.26
_cell_measurement_theta_min      2.43
_cell_volume                     4931.4(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0209
_diffrn_reflns_av_sigmaI/netI    0.0119
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            49912
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.62
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.9853
_exptl_absorpt_correction_T_min  0.9521
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.284
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2016
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.54
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.529
_refine_diff_density_min         -0.283
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     317
_refine_ls_number_reflns         6126
_refine_ls_number_restraints     13
_refine_ls_restrained_S_all      1.097
_refine_ls_R_factor_all          0.0605
_refine_ls_R_factor_gt           0.0483
_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^)+(0.0623P)^2^+2.9804P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1297
_refine_ls_wR_factor_ref         0.1409
_reflns_number_gt                4921
_reflns_number_total             6126
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc37163h.txt
_cod_data_source_block           10ktk18h
_cod_original_sg_symbol_H-M      'C2/c '
_cod_database_code               7108960