Three-Point versus Two-Point Attachment of (R)- and (S)-Amino Acid Methyl Esters to a Cobalt(III) Chiroporphyrin: Implications for the Analysis of Amino Acid Enantiomers by 1H NMR Spectroscopy
Magalie Claeys-Bruno; Dawn Toronto; Jacques Pécaut; Michel Bardet; Jean-Claude Marchon; Journal of the American Chemical Society 123 (2001) 11067–11068; doi:10.1021/ja016494x

data_4115769
_publ_section_title
;
 Three-Point versus Two-Point Attachment of (R)- and (S)-Amino Acid Methyl
 Esters to a Cobalt(III) Chiroporphyrin: Implications for the Analysis of
 Amino Acid Enantiomers by 1H NMR Spectroscopy
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11067
_journal_page_last               11068
_journal_paper_doi               10.1021/ja016494x
_journal_volume                  123
_journal_year                    2001
_chemical_formula_sum            'C64 H84 Cl7 Co N6 O12'
_chemical_formula_weight         1436.45
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 113.70(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   24.378(12)
_cell_length_b                   12.601(4)
_cell_length_c                   12.280(7)
_cell_measurement_temperature    193(2)
_cell_volume                     3454(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.702
_diffrn_measured_fraction_theta_max 0.702
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0416
_diffrn_reflns_av_sigmaI/netI    0.1066
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            6793
_diffrn_reflns_theta_full        29.55
_diffrn_reflns_theta_max         29.55
_diffrn_reflns_theta_min         1.99
_exptl_absorpt_coefficient_mu    0.582
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.381
_exptl_crystal_F_000             1504
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.5
_refine_diff_density_max         0.405
_refine_diff_density_min         -0.594
_refine_diff_density_rms         0.078
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.899
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     408
_refine_ls_number_reflns         5593
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.899
_refine_ls_R_factor_all          0.0887
_refine_ls_R_factor_gt           0.0506
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0689P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1094
_refine_ls_wR_factor_ref         0.1266
_reflns_number_gt                3620
_reflns_number_total             5593
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja016494x_s2_2.cif
_cod_data_source_block           Rile
_cod_database_code               4115769