The crystal structure of ethyl 7-ethyl-5-methyl-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate, C10H15N5O2
Wang, Wenxiang; Mou, Jiahui; Sun, Yue; Zeitschrift für Kristallographie - New Crystal Structures 238 (2023) 69–70; doi:10.1515/ncrs-2022-0471

data_8107355
_publ_section_title
;
 The crystal structure of ethyl
 7-ethyl-5-methyl-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate,
 C10H15N5O2
;
_journal_issue                   1
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              69
_journal_page_last               70
_journal_paper_doi               10.1515/ncrs-2022-0471
_journal_volume                  238
_journal_year                    2023
_chemical_formula_moiety         'C10 H15 N5 O2'
_chemical_formula_sum            'C10 H15 N5 O2'
_chemical_formula_weight         237.27
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                69.74(3)
_cell_angle_beta                 75.79(3)
_cell_angle_gamma                87.43(3)
_cell_formula_units_Z            2
_cell_length_a                   8.0501(16)
_cell_length_b                   8.6163(17)
_cell_length_c                   9.6654(19)
_cell_measurement_reflns_used    2794
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.52
_cell_measurement_theta_min      3.014
_cell_volume                     609.1(3)
_computing_cell_refinement       'CrystalClear (Rigaku, 2005)[1]'
_computing_data_collection       'CrystalClear (Rigaku, 2005)[1]'
_computing_data_reduction        'CrystalClear (Rigaku, 2005)[1]'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)[2]'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)[2]'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2018)[4]'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)[3]'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Rigaku SCXmini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0338
_diffrn_reflns_av_unetI/netI     0.0457
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            6372
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.480
_diffrn_reflns_theta_min         3.038
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.988
_exptl_absorpt_correction_T_min  0.938
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.294
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             252
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.193
_refine_diff_density_min         -0.195
_refine_diff_density_rms         0.040
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     157
_refine_ls_number_reflns         2794
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.1058
_refine_ls_R_factor_gt           0.0593
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0686P)^2^+0.1031P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1407
_refine_ls_wR_factor_ref         0.1630
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                1667
_reflns_number_total             2794
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            suppl_j_ncrs-2022-0471_suppl.cif
_cod_data_source_block           1
_cod_original_cell_volume        609.1(2)
_cod_database_code               8107355
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C5(H5)
2.b Secondary CH2 refined with riding coordinates:
 C6(H6A,H6B), C9(H9A,H9B)
2.c Aromatic/amide H refined with riding coordinates:
 N1(H1)
2.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C7(H7A,H7B,H7C), C10(H10A,H10B,H10C)
;