Indifference to Hydrogen Bonding in a Family of Secondary Amides
D. Tyler McQuade; Sonya L. McKay; Douglas R. Powell; Samuel H. Gellman; Journal of the American Chemical Society 119 (1997) 8528–8532; doi:10.1021/ja9711019

data_4117022
_publ_contact_author
; 
    Prof. Samuel H. Gellman 
    Department of Chemistry 
    University of Wisconsin 
    Madison, WI  53706-1396  USA 
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_publ_contact_author_email       gellman@chem.wisc.edu
_publ_contact_author_fax         1(608)2620381
_publ_contact_author_phone       1(608)2623303
_publ_section_title
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 Indifference to Hydrogen Bonding in a Family of Secondary Amides
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_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8528
_journal_page_last               8532
_journal_paper_doi               10.1021/ja9711019
_journal_volume                  119
_journal_year                    1997
_chemical_formula_sum            'C26 H45 N O'
_chemical_formula_weight         387.63
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.5938(8)
_cell_angle_beta                 103.1371(8)
_cell_angle_gamma                94.1739(4)
_cell_formula_units_Z            4
_cell_length_a                   10.6237(2)
_cell_length_b                   12.0664(2)
_cell_length_c                   18.5999(2)
_cell_measurement_reflns_used    8192
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      3.0
_cell_volume                     2314.87(6)
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      133(2)
_diffrn_measurement_device       'Siemens P4/CCD'
_diffrn_measurement_method       'phi scan frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0687
_diffrn_reflns_av_sigmaI/netI    0.0929
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            16138
_diffrn_reflns_theta_max         22.50
_diffrn_reflns_theta_min         1.69
_diffrn_standards_decay_%        -0.21
_diffrn_standards_number         215
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_T_max  0.9779
_exptl_absorpt_correction_T_min  0.7405
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.112
_exptl_crystal_description       'transparent prism'
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.219
_refine_diff_density_min         -0.208
_refine_diff_density_rms         0.048
_refine_ls_extinction_coef       0.0043(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_all   1.299
_refine_ls_goodness_of_fit_obs   1.406
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     506
_refine_ls_number_reflns         5958
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.303
_refine_ls_restrained_S_obs      1.406
_refine_ls_R_factor_all          0.1319
_refine_ls_R_factor_obs          0.0964
_refine_ls_shift/esd_max         -0.003
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0258P)^2^+1.8969P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1647
_refine_ls_wR_factor_obs         0.1540
_reflns_number_observed          4552
_reflns_number_total             5962
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ja9711019_1.cif
_cod_data_source_block           compound_6
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0258P)^2^+1.8969P] 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^)+(0.0258P)^2^+1.8969P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               4117022