Methyl (<i>E</i>)-3-acetamido-2-butenoate
Chen, Xuanhua; Guo, Rongwei; Zhou, Zhongyuan; Acta Crystallographica Section E 58 (2002) o1159–o1160; doi:10.1107/S1600536802017361

data_2201690
_publ_section_title
;
 Methyl (<i>E</i>)-3-acetamido-2-butenoate
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1159
_journal_page_last               o1160
_journal_paper_doi               10.1107/S1600536802017361
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'C7 H11 N O3'
_chemical_formula_moiety         'C7 H11 N O3'
_chemical_formula_sum            'C7 H11 N O3'
_chemical_formula_weight         157.17
_chemical_name_systematic
;
(E)-Methyl 3-acetamido-2-butenoate
;
_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_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 110.268(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.099(2)
_cell_length_b                   12.761(2)
_cell_length_c                   8.750(2)
_cell_measurement_reflns_used    1994
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1
_cell_volume                     848.3(3)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Siemens, 1995) '
_computing_data_reduction        'SHELXTL-NT (Siemens, 1995)'
_computing_molecular_graphics    SHELXTL-NT
_computing_publication_material  SHELXTL-NT
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Siemens SMART CCD area-detector'
_diffrn_measurement_method       '\f and \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  0.0379
_diffrn_reflns_av_sigmaI/netI    0.0447
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            5609
_diffrn_reflns_theta_full        27.54
_diffrn_reflns_theta_max         27.54
_diffrn_reflns_theta_min         2.95
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.9717
_exptl_absorpt_correction_T_min  0.9661
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.231
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             336
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.173
_refine_diff_density_min         -0.154
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     103
_refine_ls_number_reflns         1945
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0937
_refine_ls_R_factor_gt           0.0506
_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^)+(0.07P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1313
_refine_ls_wR_factor_ref         0.1479
_reflns_number_gt                994
_reflns_number_total             1945
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ww6045.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_cell_volume        848.4(2)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2201690
_cod_database_fobs_code          2201690