Long-Range 1H-15N J Couplings Providing a Method for Direct Studies of the Structure and Azide-Tetrazole Equilibrium in a Series of Azido-1,2,4-triazines and Azidopyrimidines
Tatyana S. Shestakova; Zakhar O. Shenkarev; Sergey L. Deev; Oleg N. Chupakhin; Igor A. Khalymbadzha; Vladimir L. Rusinov; Alexander S. Arseniev; Journal of Organic Chemistry 78 (2013) 6975–6982; doi:10.1021/jo4008207

data_4028415
_publ_section_title
;
 Long-Range 1H-15N J Couplings Providing a Method for Direct Studies of
 the Structure and Azide-Tetrazole Equilibrium in a Series of
 Azido-1,2,4-triazines and Azidopyrimidines
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6975
_journal_page_last               6982
_journal_paper_doi               10.1021/jo4008207
_journal_volume                  78
_journal_year                    2013
_chemical_formula_moiety         'C5 H5 N5 O'
_chemical_formula_sum            'C5 H5 N5 O'
_chemical_formula_weight         151.14
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   direct
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.5792(7)
_cell_length_b                   7.6582(4)
_cell_length_c                   14.7901(14)
_cell_measurement_reflns_used    1026
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      33.49
_cell_measurement_theta_min      2.45
_cell_volume                     631.93(10)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.29.9 (release 23-03-2006 CrysAlis171 .NET)
(compiled Mar 23 2006,23:39:28)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.29.9 (release 23-03-2006 CrysAlis171 .NET)
(compiled Mar 23 2006,23:39:28)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.29.9 (release 23-03-2006 CrysAlis171 .NET)
(compiled Mar 23 2006,23:39:28)
;
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.935
_diffrn_measurement_device_type  'Xcalibur 3 CCD'
_diffrn_measurement_method       'omega scans'
_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  0.0217
_diffrn_reflns_av_sigmaI/netI    0.0259
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            4764
_diffrn_reflns_theta_full        28.00
_diffrn_reflns_theta_max         33.49
_diffrn_reflns_theta_min         2.75
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.121
_exptl_absorpt_correction_T_max  1.02049
_exptl_absorpt_correction_T_min  0.97890
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.29.9 (release 23-03-2006 CrysAlis171 .NET)
(compiled Mar 23 2006,23:39:28)
empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.589
_exptl_crystal_description       prism
_exptl_crystal_F_000             312
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.166
_refine_diff_density_min         -0.154
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     120
_refine_ls_number_reflns         1358
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0423
_refine_ls_R_factor_gt           0.0292
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0445P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0711
_refine_ls_wR_factor_ref         0.0730
_reflns_number_gt                1026
_reflns_number_total             1358
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo4008207_si_001.cif
_cod_data_source_block           dc
_cod_database_code               4028415