Bonded peri-interactions govern the rate of racemisation of atropisomeric 8-substituted 1-naphthamides†
Clayden, Jonathan; McCarthy, Catherine; Helliwell, Madeleine; Chemical Communications  (1999) 2059–; doi:10.1039/a906398f

data_7110685
_publ_section_title
;
 Bonded peri-interactions govern the rate of racemisation of atropisomeric
 8-substituted 1-naphthamides&#x2020;
;
_journal_issue                   20
_journal_name_full               'Chemical Communications'
_journal_page_first              2059
_journal_paper_doi               10.1039/a906398f
_journal_year                    1999
_chemical_formula_moiety         'C15 H18 N2 O '
_chemical_formula_sum            'C15 H18 N2 O'
_chemical_formula_weight         242.32
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_audit_creation_date             1998-06-15
_audit_creation_method           'by teXsan v1.7'
_audit_update_record             ?
_cell_angle_alpha                90
_cell_angle_beta                 107.865(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.753(2)
_cell_length_b                   13.781(2)
_cell_length_c                   12.168(1)
_cell_measurement_reflns_used    20
_cell_measurement_temperature    296.2
_cell_measurement_theta_max      39.8
_cell_measurement_theta_min      39.1
_cell_volume                     1397.0(4)
_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  'teXsan (MSC, 1995)'
_computing_structure_solution
;
SIR92 (Altomare, et. al. 1993)
;
_diffrn_ambient_temperature      296.2
_diffrn_measurement_device       'Rigaku AFC5R'
_diffrn_measurement_method       \w-2\q
_diffrn_orient_matrix_UB_11      -0.05483
_diffrn_orient_matrix_UB_12      0.03866
_diffrn_orient_matrix_UB_13      0.04645
_diffrn_orient_matrix_UB_21      -0.10677
_diffrn_orient_matrix_UB_22      -0.02072
_diffrn_orient_matrix_UB_23      -0.05288
_diffrn_orient_matrix_UB_31      0.00160
_diffrn_orient_matrix_UB_32      -0.05781
_diffrn_orient_matrix_UB_33      0.05002
_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  0.02115
_diffrn_reflns_av_sigmaI/netI    0.060
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            3079
_diffrn_reflns_reduction_process 'Lp corrections applied'
_diffrn_reflns_theta_max         79.20
_diffrn_reflns_theta_min         3.20
_diffrn_standards_decay_%        1.53
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.544
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.911
_exptl_absorpt_correction_type
;
\y scans (North,Phillips & Matthews, 1968)
;
_exptl_crystal_colour            colourlessblock
_exptl_crystal_density_diffrn    1.152
_exptl_crystal_density_meas      ?
_exptl_crystal_description       block
_exptl_crystal_F_000             520.00
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.35
_refine_diff_density_max         0.15
_refine_diff_density_min         -0.15
_refine_ls_extinction_coef       0.0000080(5)
_refine_ls_extinction_expression 'equ(3) Acta Cryst.(1968) A24, p213.'
_refine_ls_extinction_method     'Zachariasen (1967)'
_refine_ls_goodness_of_fit_all   2.898
_refine_ls_goodness_of_fit_obs   3.354
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     236
_refine_ls_number_reflns         2015
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0830
_refine_ls_R_factor_obs          0.0561
_refine_ls_shift/esd_max         0.0010
_refine_ls_shift/esd_mean        0.0010
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(Fo) + 0.00001|Fo|^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0513
_refine_ls_wR_factor_obs         0.0497
_reflns_number_observed          2015
_reflns_number_total             2911
_reflns_observed_criterion       >2.00\s(I)
_cod_data_source_file            906398fsup1.cif
_cod_data_source_block           5
_cod_depositor_comments
;
 Renaming the _geom_torsion_site_symmetry_4 data item to _geom_torsion.
 The initial data name misassignment was cause by the incorrect data name
 order in the loop and the removal of data items containing only unknown
 ('?') or inapplicable ('.') values.

 Antanas Vaitkus,
 2018-08-08

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'w = 1/[\s^2^(Fo) +
0.00001|Fo|^2^]' 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) + 0.00001|Fo|^2^]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        1397.0(3)
_cod_original_sg_symbol_H-M      'P 21/c     '
_cod_original_formula_sum        'C15 H18 N2 O '
_cod_database_code               7110685