Methyl <i>N</i>-(benzyloxycarbonyl)oxamate
Marx, Raimund; Glaser, Steffen; Bolte, Michael; Acta Crystallographica Section E 59 (2003) o1425–o1426; doi:10.1107/S1600536803018774

data_2202644
_publ_section_title
;
 Methyl <i>N</i>-(benzyloxycarbonyl)oxamate
;
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1425
_journal_page_last               o1426
_journal_paper_doi               10.1107/S1600536803018774
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C11 H11 N O5'
_chemical_formula_moiety         'C11 H11 N O5'
_chemical_formula_sum            'C11 H11 N O5'
_chemical_formula_weight         237.21
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.446(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.0139(8)
_cell_length_b                   5.4828(5)
_cell_length_c                   24.701(3)
_cell_measurement_reflns_used    512
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      20.7
_cell_measurement_theta_min      3.2
_cell_volume                     1080.4(2)
_computing_cell_refinement       'SMART (Siemens, 1995)'
_computing_data_reduction        'SAINT (Siemens, 1995)'
_computing_molecular_graphics    'PLATON (Spek, 1990)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.926
_diffrn_measured_fraction_theta_max 0.926
_diffrn_measurement_device_type  'Siemens 1K CCD three-circle'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0417
_diffrn_reflns_av_sigmaI/netI    0.0356
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            17271
_diffrn_reflns_theta_full        30.55
_diffrn_reflns_theta_max         30.55
_diffrn_reflns_theta_min         1.66
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  'at end of data collection'
_diffrn_standards_number         123
_exptl_absorpt_coefficient_mu    0.117
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.458
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.355
_refine_diff_density_min         -0.202
_refine_ls_extinction_coef       0.0114(17)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     159
_refine_ls_number_reflns         3064
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0690
_refine_ls_R_factor_gt           0.0422
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0434P)^2^+0.2657P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0876
_refine_ls_wR_factor_ref         0.0977
_reflns_number_gt                2248
_reflns_number_total             3064
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fl6056.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2202644
_cod_database_fobs_code          2202644