Chemoselective recognition with phosphonate cavitands: the ephedrine over pseudoephedrine case
Biavardi, Elisa; Ugozzoli, Franco; Massera, Chiara; Chemical Communications (Cambridge, United Kingdom) 51 (2015) 3426–3429; doi:10.1039/c4cc09387a

data_7116522
_publ_section_title
;
 Chemoselective recognition with phosphonate cavitands: the ephedrine over
 pseudoephedrine case
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   16
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              3426
_journal_page_last               3429
_journal_paper_doi               10.1039/c4cc09387a
_journal_volume                  51
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_moiety
'C68 H68 P4 O12, C10 H16 N O Cl, H2 O, C H4 O'
_chemical_formula_sum            'C79 H90 Cl N O15 P4'
_chemical_formula_weight         1452.85
_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
_audit_update_record
;
2014-11-18 deposited with the CCDC.
2015-01-20 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 91.273(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.917(2)
_cell_length_b                   37.798(6)
_cell_length_c                   15.357(2)
_cell_measurement_reflns_used    945
_cell_measurement_temperature    190(2)
_cell_measurement_theta_max      23.36
_cell_measurement_theta_min      1.33
_cell_volume                     8076(2)
_computing_cell_refinement       'APEX-II (2008)'
_computing_data_collection       'APEX-II (2008)'
_computing_data_reduction        'SAINT (2008)'
_computing_structure_refinement
'SHELXL97, G. M. Sheldrick, Acta Cryst. A, 2008,A64,112-122.'
_computing_structure_solution    'SIR97 (Giacovazzo and co., 1999)'
_diffrn_ambient_temperature      190(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD area-detector'
_diffrn_measurement_method       omega-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.2625
_diffrn_reflns_av_sigmaI/netI    0.2893
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       42
_diffrn_reflns_limit_k_min       -42
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            76484
_diffrn_reflns_theta_full        23.36
_diffrn_reflns_theta_max         23.36
_diffrn_reflns_theta_min         1.33
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.188
_exptl_absorpt_correction_T_max  0.7449
_exptl_absorpt_correction_T_min  0.6161
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker Apex-II SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             3072
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.989
_refine_diff_density_min         -0.406
_refine_diff_density_rms         0.103
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.11(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.999
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1620
_refine_ls_number_reflns         23455
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.999
_refine_ls_R_factor_all          0.2799
_refine_ls_R_factor_gt           0.1144
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1605P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2672
_refine_ls_wR_factor_ref         0.3578
_reflns_number_gt                8538
_reflns_number_total             23455
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc09387a2.cif
_cod_data_source_block           efen28
_cod_original_sg_symbol_H-M      P21
_cod_database_code               7116522