Out of cross-conjugation: The unexpected structure of tetrazinones
Benyei, Attila; Stirling, Andras; Bostai, Beatrix; Lőrincz, Krisztián; Kotschy, Andras; RSC Adv.  (2014) –; doi:10.1039/C4RA05616G

data_7218240
_publ_section_title
;
 Out of cross-conjugation: The unexpected structure of tetrazinones
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C4RA05616G
_journal_year                    2014
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C22 H24 N6 O1'
_chemical_formula_sum            'C22 H24 N6 O'
_chemical_formula_weight         388.47
_chemical_name_systematic
;
 ?
;
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2011-06-28T15:27:17-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.7674(10)
_cell_length_b                   13.8678(10)
_cell_length_c                   14.8710(10)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      17.01
_cell_measurement_theta_min      9.32
_cell_volume                     2014.3(3)
_computing_cell_refinement       'MACH3/PC (Enraf Nonius, 1992)'
_computing_data_collection       'MACH3/PC (Enraf Nonius, 1992)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR92 (Giacovazzo et al, 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device_type  'Enraf Nonius MACH3'
_diffrn_measurement_method       'non-profiled omega/2theta scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0101
_diffrn_reflns_av_unetI/netI     0.0444
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -2
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2317
_diffrn_reflns_theta_full        25.96
_diffrn_reflns_theta_max         25.96
_diffrn_reflns_theta_min         2.01
_diffrn_source                   'Enraf Nonius FR590'
_diffrn_standards_decay_%        2
_diffrn_standards_interval_count 97
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9804
_exptl_absorpt_correction_T_min  0.9165
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details
;
North A.C.T., Phillips D.C. & Mathews F.S. (1968) Acta. Cryst. A24, 351
        Number of psi-scan sets used was   4
        Theta correction was applied.
        Averaged transmission function was used.
        Fourier smoothing - Window value   5
;
_exptl_crystal_colour            pink
_exptl_crystal_density_diffrn    1.281
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.177
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.04
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -5(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.077
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     266
_refine_ls_number_reflns         2242
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.077
_refine_ls_R_factor_all          0.0876
_refine_ls_R_factor_gt           0.051
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0633P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1275
_reflns_number_gt                1546
_reflns_number_total             2242
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c4ra05616g2.cif
_cod_data_source_block           4
_cod_database_code               7218240