Two azabenzotriazines
Yamaguchi, K.; Takahashi, H.; Itoh, T.; Ohsawa, A.; Acta Crystallographica Section C 48 (1992) 1152–1154; doi:10.1107/S0108270192002725

data_2000859
_publ_contact_author
;
     Dr. Kentaro Yamaguchi
     School of Pharmaceutical Sciences
     Showa University
     1-5-8 Hatanodai, Shinagawa-ku
     Tokyo 142, Japan
;
_publ_section_title
;
 Two azabenzotriazines
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1152
_journal_page_last               1154
_journal_paper_doi               10.1107/S0108270192002725
_journal_volume                  48
_journal_year                    1992
_chemical_formula_moiety         'C12 H8 N4 O'
_chemical_formula_sum            'C12 H8 N4 O'
_chemical_formula_weight         224.22
_chemical_name_systematic
;
2-phenylpyridazino[2,1-f][1,2,4]triazin-4-one
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_type_scat_source           IntTabIV
_cell_angle_alpha                90.0
_cell_angle_beta                 94.76(3)
_cell_angle_gamma                90.0
_cell_formula_units_Z            4
_cell_length_a                   19.057(7)
_cell_length_b                   7.473(3)
_cell_length_c                   7.286(3)
_cell_measurement_reflns_used    20
_cell_measurement_temperature    297
_cell_measurement_theta_max      30.0
_cell_measurement_theta_min      28.0
_cell_volume                     1034.0(7)
_computing_cell_refinement       AFD
_computing_data_collection       'AFD (Rigaku Corporation, 1985a)'
_computing_data_reduction        'RCRYSTAN (Rigaku Corporation, 1985b)'
_computing_molecular_graphics    'ACV (Stardent Computer Inc., 1990)'
_computing_publication_material  'XPACK (Yamaguchi, 1987)'
_computing_structure_refinement  RCRYSTAN
_computing_structure_solution
'SAPI85 (Yao, Zheng, Qian, Han, Gu & Fan, 1988)'
_diffrn_measurement_device       'RIGAKU AFC-5'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_type           CuK\a_1
_diffrn_radiation_wavelength     1.5405
_diffrn_reflns_av_R_equivalents  0.063
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1870
_diffrn_reflns_theta_max         60
_diffrn_standards_decay_%        <3
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.763
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Clear
_exptl_crystal_density_diffrn    1.440
_exptl_crystal_description       Needle
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.184
_refine_diff_density_min         -0.291
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_obs   1.030
_refine_ls_hydrogen_treatment    refall
_refine_ls_number_parameters     186
_refine_ls_number_reflns         958
_refine_ls_R_factor_obs          0.058
_refine_ls_shift/esd_max         0.132
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     'w = 1/[\s^2^(F)+0.043F^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         0.065
_reflns_number_observed          958
_reflns_number_total             1541
_reflns_observed_criterion       F>3\s(F)
_cod_data_source_file            as1002.cif
_cod_data_source_block           MOLE1
_cod_depositor_comments
;
 Marking attached hydrogen atoms.

 Antanas Vaitkus,
 2017-03-27

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value '1/[\s^2^(F)+0.043F^2^]' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w =
1/[\s^2^(F)+0.043F^2^]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        1033.9(7)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2000859