Conformation of N^α^-Substituted Hydrazino Acetamides in CDCl~3~, he Precious Help of the Analysis of Δδ between Amidic Hydrogens, and Correlation to the Conformation of Aza-β^3^-peptides
Arnaud Salaün; Annaïck Favre; Barbara Le Grel; Michel Potel; Philippe Le Grel; Journal of Organic Chemistry 71 (2006) 150–158; doi:10.1021/jo051887q

data_4021368
_publ_section_title
;
 Conformation of N^\a^-Substituted Hydrazino Acetamides in CDCl~3~,
 he Precious Help of the Analysis of \D\d between Amidic Hydrogens,
 and Correlation to the Conformation of Aza-\b^3^-peptides
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              150
_journal_page_last               158
_journal_paper_doi               10.1021/jo051887q
_journal_volume                  71
_journal_year                    2006
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C14 H21 N3 O3'
_chemical_formula_sum            'C14 H21 N3 O3'
_chemical_formula_weight         279.34
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.2
_audit_creation_date             2005-03-22T15:29:13-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 100.3280(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.4776(3)
_cell_length_b                   9.7596(3)
_cell_length_c                   15.2755(7)
_cell_measurement_reflns_used    3818
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.878
_cell_measurement_theta_min      0.998
_cell_measurement_wavelength     0.71073
_cell_volume                     1536.72(10)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Giacovazzo et al, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_orient_matrix_type       'by Nonius Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      -0.65431E-2
_diffrn_orient_matrix_UB_12      -0.930527E-1
_diffrn_orient_matrix_UB_13      0.266463E-1
_diffrn_orient_matrix_UB_21      0.101177
_diffrn_orient_matrix_UB_22      -0.25374E-2
_diffrn_orient_matrix_UB_23      0.159834E-1
_diffrn_orient_matrix_UB_31      -0.101543E-1
_diffrn_orient_matrix_UB_32      0.70006E-2
_diffrn_orient_matrix_UB_33      0.653895E-1
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0
_diffrn_reflns_av_unetI/netI     0.0493
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            3185
_diffrn_reflns_theta_full        26.51
_diffrn_reflns_theta_max         26.51
_diffrn_reflns_theta_min         2.19
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.207
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fiber
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.075
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.189
_refine_diff_density_rms         0.04
_refine_ls_extinction_coef       0.020(3)
_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_ref   1.033
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     186
_refine_ls_number_reflns         3185
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.1074
_refine_ls_R_factor_gt           0.0542
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0941P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1451
_refine_ls_wR_factor_ref         0.175
_reflns_number_gt                1799
_reflns_number_total             3185
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo051887qsi20050908_052232.cif
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4021368