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_4130538
_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
'4(C36 H36 O12 P4), 4(C4 H9 N O2), 16(C2 H3 F3 O), 0.4O'
_chemical_formula_sum            'C192 H228 F48 N4 O72.4 P16'
_chemical_formula_weight         5157.74
_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             2015-05-12T13:41:40-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                81.38(2)
_cell_angle_beta                 84.56(3)
_cell_angle_gamma                70.12(2)
_cell_formula_units_Z            1
_cell_length_a                   12.650(10)
_cell_length_b                   18.350(10)
_cell_length_c                   26.590(10)
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.499
_cell_measurement_theta_min      1.688
_cell_measurement_wavelength     0.7
_cell_volume                     5732(6)
_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 0.837
_diffrn_measured_fraction_theta_max 0.816
_diffrn_measurement_device_type  'Dectris Pilatus 2M'
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_radiation_monochromator  Si111
_diffrn_radiation_source         'Elettra Synchrotron, Trieste (Italy)'
_diffrn_radiation_wavelength     0.7
_diffrn_reflns_av_unetI/netI     0.0844
_diffrn_reflns_Laue_measured_fraction_full 0.837
_diffrn_reflns_Laue_measured_fraction_max 0.816
_diffrn_reflns_number            32996
_diffrn_reflns_point_group_measured_fraction_full 0.623
_diffrn_reflns_point_group_measured_fraction_max 0.598
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         27.499
_diffrn_reflns_theta_min         1.688
_exptl_absorpt_coefficient_mu    0.228
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.492
_exptl_crystal_description       block
_exptl_crystal_F_000             2655
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.299
_refine_diff_density_min         -0.564
_refine_diff_density_rms         0.083
_refine_ls_abs_structure_details
;
 Flack x determined using 8970 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.08(4)
_refine_ls_extinction_coef       0.0037(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   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     3081
_refine_ls_number_reflns         32996
_refine_ls_number_restraints     28
_refine_ls_restrained_S_all      1.04
_refine_ls_R_factor_all          0.0634
_refine_ls_R_factor_gt           0.0605
_refine_ls_shift/su_max          0.023
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0888P)^2^+4.1512P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1632
_refine_ls_wR_factor_ref         0.1676
_reflns_Friedel_coverage         0.465
_reflns_Friedel_fraction_full    0.409
_reflns_Friedel_fraction_max     0.38
_reflns_number_gt                31124
_reflns_number_total             32996
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b04372_si_009.cif
_cod_data_source_block           MeALA
_cod_database_code               4130538
_shelx_estimated_absorpt_t_min   0.924
_shelx_estimated_absorpt_t_max   0.982
_shelx_res_checksum              6695
_shelx_hkl_checksum              46605
_shelx_fab_checksum              16126