Propyl 3,6-diphenyl-1,4-dihydro-1,2,4,5-tetrazine-1-carboxylate
Guo-Wu Rao; Wei-Xiao Hu; Acta Crystallographica Section E 61 (2005) o2431–o2432; doi:10.1107/S1600536805019653

data_2206480
_publ_section_title
;
 Propyl 3,6-diphenyl-1,4-dihydro-1,2,4,5-tetrazine-1-carboxylate
;
_journal_coeditor_code           LH6426
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2431
_journal_page_last               o2432
_journal_paper_doi               10.1107/S1600536805019653
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C18 H18 N4 O2'
_chemical_formula_moiety         'C18 H18 N4 O2'
_chemical_formula_sum            'C18 H18 N4 O2'
_chemical_formula_weight         322.36
_chemical_melting_point          .414E-305
_chemical_name_systematic
;
Propyl 3,6-diphenyl-1,4-dihydro-1,2,4,5-tetrazine-1-carboxylate
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_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                   10.212(3)
_cell_length_b                   10.051(2)
_cell_length_c                   16.611(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      12.46
_cell_measurement_theta_min      10.72
_cell_volume                     1705.0(7)
_computing_cell_refinement       'CAD-4 EXPRESS'
_computing_data_collection       'CAD-4 EXPRESS (Enraf--Nonius, 1994)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics
'ORTEP-3 for Windows (Version 1.05; Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Enraf--Nonius CAD-4'
_diffrn_measurement_method       \w/2\q
_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  0.0169
_diffrn_reflns_av_sigmaI/netI    0.0399
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       1
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            1699
_diffrn_reflns_theta_full        25.17
_diffrn_reflns_theta_max         25.17
_diffrn_reflns_theta_min         2.37
_diffrn_standards_decay_%        0.3
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.9832
_exptl_absorpt_correction_T_min  0.9669
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(ABSCOR; Higashi, 1995)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.256
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.160
_refine_diff_density_min         -0.197
_refine_ls_extinction_coef       0.012(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         1584
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0835
_refine_ls_R_factor_gt           0.0356
_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^)+(0.0614P)^2^+0.0145P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0895
_refine_ls_wR_factor_ref         0.1055
_reflns_number_gt                997
_reflns_number_total             1584
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh6426.cif
_cod_data_source_block           I
_cod_database_code               2206480
_cod_database_fobs_code          2206480