`Push–pull' effects in nitroethenamines
Linden, Anthony; Moya Argilagos, Dally; Heimgartner, Heinz; García Trimiño, María I.; Macías Cabrera, Arturo; Acta Crystallographica Section C 55 (1999) 1692–1698; doi:10.1107/S0108270199006861

data_2009011
_publ_section_title
;
 `Push--pull' effects in nitroethenamines
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1692
_journal_page_last               1698
_journal_paper_doi               10.1107/S0108270199006861
_journal_volume                  55
_journal_year                    1999
_chemical_formula_moiety         'C4 H8 N2 O2 S '
_chemical_formula_sum            'C4 H8 N2 O2 S'
_chemical_formula_weight         148.18
_chemical_melting_point          384.5(5)
_chemical_name_systematic
' (E)-N-methyl-1-(methylthio)-2-nitroethenylamine'
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                90.65(3)
_cell_angle_beta                 106.53(3)
_cell_angle_gamma                105.69(3)
_cell_formula_units_Z            2
_cell_length_a                   7.105(3)
_cell_length_b                   8.690(3)
_cell_length_c                   5.777(2)
_cell_measurement_reflns_used    21
_cell_measurement_temperature    173.0(10)
_cell_measurement_theta_max      20.0
_cell_measurement_theta_min      19.5
_cell_volume                     327.7(2)
_computing_cell_refinement       'MSC/AFC Diffractometer Control Software'
_computing_data_collection
;
MSC/AFC Diffractometer Control Software (Molecular Structure
Corporation, 1991)
;
_computing_data_reduction
'TEXSAN (Molecular Structure Corporation, 1989)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173.0(10)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku AFC-5R'
_diffrn_measurement_method       '\w/2\q scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Rigaku rotating anode generator'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.012
_diffrn_reflns_av_sigmaI/netI    0.018
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            2044
_diffrn_reflns_theta_full        30.0
_diffrn_reflns_theta_max         30
_diffrn_reflns_theta_min         2.5
_diffrn_standards_decay_%        insignificant
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.419
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.502
_exptl_crystal_density_meas      ?
_exptl_crystal_description       prism
_exptl_crystal_F_000             156
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.545
_refine_diff_density_min         -0.220
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.208
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     88
_refine_ls_number_reflns         1902
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.208
_refine_ls_R_factor_all          0.043
_refine_ls_R_factor_gt           0.036
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0454P)^2^+0.1545P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.108
_reflns_number_gt                1693
_reflns_number_total             1902
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            fg1546.cif
_cod_data_source_block           1a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '384-385' was changed to '384.5(5)' -
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value '384-385' was changed to '384.5(5)' -
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_formula_sum        'C4 H8 N2 O2 S '
_cod_database_code               2009011
_cod_database_fobs_code          2009011