The Origin of Selectivity in the Complexation of N-Methyl Amino Acids by Tetraphosphonate Cavitands.
Pinalli, Roberta; Brancatelli, Giovanna; Pedrini, Alessandro; Menozzi, Daniela; Hernández, Daniel; Ballester, Pablo; Geremia, Silvano; Dalcanale, Enrico; Journal of the American Chemical Society 138 (2016) 8569–8580; doi:10.1021/jacs.6b04372

data_4130542
_publ_section_title
;
 The Origin of Selectivity in the Complexation of N-Methyl Amino Acids by
 Tetraphosphonate Cavitands.
;
_journal_issue                   27
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8569
_journal_page_last               8580
_journal_paper_doi               10.1021/jacs.6b04372
_journal_volume                  138
_journal_year                    2016
_chemical_absolute_configuration rmad
_chemical_formula_moiety
'2(C36 H36 O12 P4), 2(C9 H12 N O3), 2 Cl, 0.15 O, 4(C2 H3 F3 O)'
_chemical_formula_sum            'C98 H108 Cl2 F12 N2 O34.15 P8'
_chemical_formula_weight         2406.92
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_space_group_name_H-M_alt        'P 1'
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      1
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2015-04-17T19:01:45-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                69.97(2)
_cell_angle_beta                 78.83(3)
_cell_angle_gamma                82.15(2)
_cell_formula_units_Z            1
_cell_length_a                   12.370(10)
_cell_length_b                   13.260(10)
_cell_length_c                   17.960(10)
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.999
_cell_measurement_theta_min      5.065
_cell_measurement_wavelength     0.7
_cell_volume                     2707(3)
_computing_data_collection       'Elettra XRD1 Data Collection SW'
_computing_molecular_graphics    Pymol
_computing_publication_material  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution
'SIR2011, updated version of SIR2008 (Burla et al., 2007)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.834
_diffrn_measured_fraction_theta_max 0.835
_diffrn_measurement_device_type  'Dectris Pilatus 2M'
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_radiation_monochromator  Si111
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'Elettra Synchrotron, Trieste (Italy)'
_diffrn_radiation_wavelength     0.7
_diffrn_reflns_av_unetI/netI     0.085
_diffrn_reflns_Laue_measured_fraction_full 0.834
_diffrn_reflns_Laue_measured_fraction_max 0.835
_diffrn_reflns_number            14262
_diffrn_reflns_point_group_measured_fraction_full 0.641
_diffrn_reflns_point_group_measured_fraction_max 0.639
_diffrn_reflns_theta_full        24.835
_diffrn_reflns_theta_max         25.999
_diffrn_reflns_theta_min         5.065
_exptl_absorpt_coefficient_mu    0.265
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.475
_exptl_crystal_description       platelet
_exptl_crystal_F_000             1245.2
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.553
_refine_diff_density_min         -0.528
_refine_diff_density_rms         0.095
_refine_ls_abs_structure_details
;
 Flack x determined using 4745 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.056(19)
_refine_ls_extinction_coef       0.051(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1412
_refine_ls_number_reflns         14262
_refine_ls_number_restraints     27
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0565
_refine_ls_R_factor_gt           0.0561
_refine_ls_shift/su_max          0.02
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0459P)^2^+2.9860P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1457
_refine_ls_wR_factor_ref         0.146
_reflns_Friedel_coverage         0.531
_reflns_Friedel_fraction_full    0.449
_reflns_Friedel_fraction_max     0.443
_reflns_number_gt                14087
_reflns_number_total             14262
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b04372_si_015.cif
_cod_data_source_block           now
_cod_database_code               4130542
_shelx_estimated_absorpt_t_min   0.946
_shelx_estimated_absorpt_t_max   0.987
_shelx_res_checksum              76861
_shelx_hkl_checksum              71995