6,7,8,9-Tetrahydro-5<i>H</i>-pyrido[2,3-<i>b</i>]azepine-5,8-dione: a hydrogen-bonded dimer structure
Gu, Xiao-Dan; Zhou, Fu-Hui; Zhou, Hua; Xu, Jing-Wei; Deng, Jian-Cheng; Acta Crystallographica Section E 62 (2006) o2918–o2919; doi:10.1107/S1600536806021222

data_2209559
_publ_section_title
;
 6,7,8,9-Tetrahydro-5<i>H</i>-pyrido[2,3-<i>b</i>]azepine-5,8-dione: a
 hydrogen-bonded dimer structure
;
_journal_coeditor_code           IS2044
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2918
_journal_page_last               o2919
_journal_paper_doi               10.1107/S1600536806021222
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C9 H8 N2 O2'
_chemical_formula_moiety         'C9 H8 N2 O2'
_chemical_formula_sum            'C9 H8 N2 O2'
_chemical_formula_weight         176.17
_chemical_name_systematic
;
6,7,8,9-tetrahydro-5H-pyrido[2,3-b]azepine-5,8-dione
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                98.155(2)
_cell_angle_beta                 98.996(2)
_cell_angle_gamma                91.754(2)
_cell_formula_units_Z            4
_cell_length_a                   8.2902(11)
_cell_length_b                   8.5284(11)
_cell_length_c                   11.1261(15)
_cell_measurement_reflns_used    1029
_cell_measurement_temperature    187(2)
_cell_measurement_theta_max      25.57
_cell_measurement_theta_min      2.42
_cell_volume                     767.98(18)
_computing_cell_refinement       'SAINT (Bruker, 2003)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      187(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Bruker 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  0.0184
_diffrn_reflns_av_sigmaI/netI    0.0436
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4341
_diffrn_reflns_theta_full        26.04
_diffrn_reflns_theta_max         26.04
_diffrn_reflns_theta_min         1.87
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  0.9892
_exptl_absorpt_correction_T_min  0.9776
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.524
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             368
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.225
_refine_diff_density_min         -0.280
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         2959
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0794
_refine_ls_R_factor_gt           0.0531
_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^)+(0.0819P)^2^+0.0598P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1313
_refine_ls_wR_factor_ref         0.1487
_reflns_number_gt                2109
_reflns_number_total             2959
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            is2044.cif
_cod_data_source_block           I
_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_sg_symbol_H-M      P-1
_cod_database_code               2209559
_cod_database_fobs_code          2209559