Structural analysis of pyrrolidinones
Camus, Fabrice; Norberg, Bernadette; Legrand, Anne; Rigo, Benoit; Durant, François; Wouters, Johan; Acta Crystallographica Section C 56 (2000) 193–196; doi:10.1107/S0108270199013037

data_2010620
_publ_section_title
;
 Structural analysis of pyrrolidinones
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              193
_journal_page_last               196
_journal_paper_doi               10.1107/S0108270199013037
_journal_volume                  56
_journal_year                    2000
_chemical_formula_sum            'C23 H27 N O7'
_chemical_formula_weight         429.46
_chemical_name_systematic
;
 methyl N-[4-methoxyphenyl-(3,4,5-trimethoxyphenyl)-methyl]pyroglutamate
;
_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'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.538(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.4810(10)
_cell_length_b                   14.2060(10)
_cell_length_c                   18.2730(10)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      42
_cell_measurement_theta_min      30
_cell_volume                     2201.5(3)
_computing_cell_refinement       'CAD-4 EXPRESS'
_computing_data_collection       'CAD-4 EXPRESS (Enraf-Nonius, 1992)'
_computing_data_reduction        'HELENA (Spek, 1997)'
_computing_molecular_graphics    'PLATON (Spek, 1990)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full .960
_diffrn_measured_fraction_theta_max .960
_diffrn_measurement_device_type  'Enraf-Nonius CAD-4'
_diffrn_measurement_method       \q/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  .023
_diffrn_reflns_av_sigmaI/netI    .0102
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            6885
_diffrn_reflns_theta_full        71.91
_diffrn_reflns_theta_max         71.91
_diffrn_reflns_theta_min         3.94
_diffrn_standards_decay_%        2
_diffrn_standards_interval_count 200
_diffrn_standards_interval_time  '60 min'
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    .797
_exptl_absorpt_correction_T_max  .8569
_exptl_absorpt_correction_T_min  .7960
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             912
_exptl_crystal_size_max          .30
_exptl_crystal_size_mid          .30
_exptl_crystal_size_min          .20
_refine_diff_density_max         .304
_refine_diff_density_min         -.239
_refine_ls_extinction_coef       .0104(5)
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     283
_refine_ls_number_reflns         4331
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          .0456
_refine_ls_R_factor_gt           .0424
_refine_ls_shift/su_max          .001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0648P)^2^+0.5599P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .1221
_reflns_number_gt                3939
_reflns_number_total             4331
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gs1054.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0648P)^2^+0.5599P] 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^)+(0.0648P)^2^+0.5599P] 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/n'
_cod_database_code               2010620
_cod_database_fobs_code          2010620