5-Acetyl-2-amino-6-methyl-4-(3-nitrophenyl)-4<i>H</i>-pyran-3-carbonitrile and 2-amino-5-ethoxycarbonyl-6-methyl-4-(3-nitrophenyl)-4<i>H</i>-pyrano-3-carbonitrile
Vladimir N. Nesterov; Elena A. Viltchinskaia; Acta Crystallographica Section C 57 (2001) 616–618; doi:10.1107/S0108270101002682

data_2011944
_publ_section_title
;5-Acetyl-2-amino-6-methyl-4-(3-nitrophenyl)-4<i>H</i>-pyran-3-carbonitrile
 and
 2-amino-5-ethoxycarbonyl-6-methyl-4-(3-nitrophenyl)-4<i>H</i>-pyrano-3-carbonitrile
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              616
_journal_page_last               618
_journal_paper_doi               10.1107/S0108270101002682
_journal_volume                  57
_journal_year                    2001
_chemical_formula_moiety         'C16 H15 N3 O5'
_chemical_formula_sum            'C16 H15 N3 O5'
_chemical_formula_weight         329.31
_chemical_melting_point          457
_chemical_name_systematic
;
ethyl 6-amino-5-cyano-2-methyl-4-(3-nitrophenyl)-4H-pyrano-3-carboxylate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                83.05(2)
_cell_angle_beta                 71.33(2)
_cell_angle_gamma                76.35(2)
_cell_formula_units_Z            2
_cell_length_a                   8.4550(10)
_cell_length_b                   8.4750(10)
_cell_length_c                   12.073(2)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      12
_cell_measurement_theta_min      11
_cell_volume                     795.5(2)
_computing_cell_refinement       P3
_computing_data_collection       'P3 (Siemens, 1989)'
_computing_data_reduction        'SHELXTL-Plus (Sheldrick, 1994)'
_computing_molecular_graphics    SHELXTL-Plus
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full .927
_diffrn_measured_fraction_theta_max .927
_diffrn_measurement_device_type  'Siemens P3/PC'
_diffrn_measurement_method       '\q/2\q scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .0267
_diffrn_reflns_av_sigmaI/netI    .0546
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            4216
_diffrn_reflns_theta_full        29.06
_diffrn_reflns_theta_max         29.06
_diffrn_reflns_theta_min         2.60
_diffrn_standards_decay_%        5
_diffrn_standards_interval_count 98
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    .104
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.375
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rhombohedral prism'
_exptl_crystal_F_000             344
_exptl_crystal_size_max          .50
_exptl_crystal_size_mid          .40
_exptl_crystal_size_min          .30
_refine_diff_density_max         .222
_refine_diff_density_min         -.199
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         3942
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          .1126
_refine_ls_R_factor_gt           .0579
_refine_ls_shift/su_max          .003
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0686P)^2^+0.1782P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .1537
_reflns_number_gt                2553
_reflns_number_total             3942
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bm1442.cif
_cod_data_source_block           II
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 'Triclinic' changed to 'triclinic'
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        795.46(19)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               2011944
_cod_database_fobs_code          2011944