Conformational preference in aromatic amides bearing chiral ortho substituents: its origin and application to relayed stereocontrol.
Betson, Mark S.; Clayden, Jonathan; Helliwell, Madeleine; Johnson, Paul; Lai, Lai Wah; Pink, Jennifer H.; Stimson, Christopher C.; Vassiliou, Neoclis; Westlund, Neil; Yasin, Samreen A.; Youssef, Latifa H.; Organic & biomolecular chemistry 4 (2006) 424–443; doi:10.1039/b514557k

data_7150401
_publ_section_title
;
 Conformational preference in aromatic amides bearing chiral ortho
 substituents: its origin and application to relayed stereocontrol.
;
_journal_issue                   3
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              424
_journal_page_last               443
_journal_paper_doi               10.1039/b514557k
_journal_volume                  4
_journal_year                    2006
_chemical_formula_sum            'C31 H45 N3 O3'
_chemical_formula_weight         507.70
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_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_date             19100-03-02
_audit_creation_method           'by teXsan v1.7'
_audit_update_record
;
?
;
_cell_angle_alpha                90.00
_cell_angle_beta                 96.44(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.547(8)
_cell_length_b                   12.605(5)
_cell_length_c                   12.023(4)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    296.2
_cell_measurement_theta_max      28.1
_cell_measurement_theta_min      20.0
_cell_volume                     1588.3(15)
_computing_cell_refinement       'MSC/AFC Diffractometer Control'
_computing_data_collection       'MSC/AFC Diffractometer Control'
_computing_data_reduction        'teXsan (MSC, 1995)'
_computing_publication_material  'teXsan (MSC, 1995)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
;
SHELXS86 (Sheldrick, 1985)
;
_diffrn_ambient_temperature      296.2
_diffrn_measured_fraction_theta_full 0.911
_diffrn_measured_fraction_theta_max 0.911
_diffrn_measurement_device       'Rigaku AFC5R'
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_detector       'scintillation counter'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Rigaku rotating anode'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.0540
_diffrn_reflns_av_sigmaI/netI    0.0384
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            3456
_diffrn_reflns_theta_full        78.70
_diffrn_reflns_theta_max         78.70
_diffrn_reflns_theta_min         3.70
_diffrn_standards_decay_%        0.16
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.535
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.772
_exptl_absorpt_correction_type
;
\y scans (North,Phillips & Matthews, 1968)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.062
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       tabular
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.142
_refine_diff_density_min         -0.189
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.4(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     344
_refine_ls_number_reflns         3265
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0981
_refine_ls_R_factor_gt           0.0500
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0783P)^2^+0.1892P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1283
_refine_ls_wR_factor_ref         0.1645
_reflns_number_gt                2142
_reflns_number_total             3265
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b514557k.txt
_cod_data_source_block           s803
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0783P)^2^+0.1892P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0783P)^2^+0.1892P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21 '
_cod_database_code               7150401