Stereochemistry of Asymmetric β-Lactam Formation Involving Achiral Glyoxylamide Derivatives
Hashizume, D.; Kogo, H.; Sekine, A.; Ohashi, Y.; Miyamoto, H.; Toda, F.; Acta Crystallographica Section C 51 (1995) 929–933; doi:10.1107/S0108270194012412

data_2003417
_publ_section_title
;
 Stereochemistry of Asymmetric \b-Lactam Formation Involving Achiral
 Glyoxylamide Derivatives
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              929
_journal_page_last               933
_journal_paper_doi               10.1107/S0108270194012412
_journal_volume                  51
_journal_year                    1995
_chemical_formula_moiety         'C16 H23 N1 O2'
_chemical_formula_sum            'C16 H23 N O2'
_chemical_formula_weight         261.36
_chemical_name_systematic
;
 N,N-diisopropyl(m,p-dimethylphenyl)glyoxylamide
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_cell_angle_alpha                90
_cell_angle_beta                 95.31(5)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   16.300(8)
_cell_length_b                   6.331(2)
_cell_length_c                   7.461(2)
_cell_measurement_reflns_used    18
_cell_measurement_temperature    296
_cell_measurement_theta_max      25
_cell_measurement_theta_min      20
_cell_volume                     766.6(5)
_computing_molecular_graphics    'ORTEP (Johnson, 1965)'
_computing_structure_refinement  'ORFLS (Busing, Martin & Levy, 1962)'
_computing_structure_solution    'MITHRIL (Gilmore, 1984)'
_diffrn_ambient_temperature      296
_diffrn_measurement_device       AFC-4
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'X-ray sealed tube'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1347
_diffrn_reflns_theta_max         62.5
_diffrn_reflns_theta_min         0
_diffrn_standards_decay_%        <0.9
_diffrn_standards_interval_count 50
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.55
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.13
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             284
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.18
_refine_diff_density_min         -0.23
_refine_ls_goodness_of_fit_obs   9.73
_refine_ls_hydrogen_treatment    'H atoms were placed in fixed positions'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     171
_refine_ls_number_reflns         1312
_refine_ls_R_factor_obs          0.061
_refine_ls_shift/esd_max         0.01
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(|F~o~|)]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         0.062
_reflns_number_observed          1312
_reflns_number_total             1347
_reflns_observed_criterion       |Fo|>3\s(|Fo|)
_cod_data_source_file            as1136.cif
_cod_data_source_block           dimethyl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w = 1/[\s^2^(|F~o~|)]' 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^(|F~o~|)]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_Hall     'P 2y1'
_cod_original_sg_symbol_H-M      'P 21'
_cod_original_formula_sum        'C16 H23 N1 O2'
_cod_database_code               2003417