Dynamic Devices. Shape Switching and Substrate Binding in Ion-Controlled Nanomechanical Molecular Tweezers
Anne Petitjean; Richard G. Khoury; Nathalie Kyritsakas; Jean-Marie Lehn; Journal of the American Chemical Society 126 (2004) 6637–6647; doi:10.1021/ja031915r

data_4112598
_publ_section_title
;
 Dynamic Devices. Shape Switching and Substrate Binding in Ion-Controlled
 Nanomechanical Molecular Tweezers
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6637
_journal_page_last               6647
_journal_paper_doi               10.1021/ja031915r
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C42 H26 Cl3 F6 N4 O4'
_chemical_formula_weight         871.02
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                81.15(3)
_cell_angle_beta                 74.62(3)
_cell_angle_gamma                80.74(3)
_cell_formula_units_Z            4
_cell_length_a                   13.310(3)
_cell_length_b                   13.490(3)
_cell_length_c                   16.660(3)
_cell_measurement_temperature    173(2)
_cell_volume                     2827.1(11)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_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    0.0418
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            5860
_diffrn_reflns_theta_full        20.81
_diffrn_reflns_theta_max         20.81
_diffrn_reflns_theta_min         1.60
_exptl_absorpt_coefficient_mu    0.432
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.046
_exptl_crystal_F_000             1772
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.732
_refine_diff_density_min         -0.728
_refine_diff_density_rms         0.084
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     736
_refine_ls_number_reflns         5860
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.1371
_refine_ls_R_factor_gt           0.1171
_refine_ls_shift/su_max          0.521
_refine_ls_shift/su_mean         0.035
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1875P)^2^+11.4461P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3123
_refine_ls_wR_factor_ref         0.3282
_reflns_number_gt                4752
_reflns_number_total             5860
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja031915rsi20031223_051000.cif
_cod_data_source_block           test
_cod_original_cell_volume        2827.1(10)
_cod_database_code               4112598