Relevant π–hole tetrel bonding interactions in ethyl 2-triazolyl-2-oxo-acetate derivatives: Hirshfeld surface analysis and DFT calculations
Ahmed, Muhammad Naeem; Ansar, Khawaja Yasin; Aziz, Shahid; Khan, Saba; Tahir, Muhammad Nawaz; Gil, Diego M.; Frontera, Antonio; CrystEngComm  (2020) –; doi:10.1039/D0CE00335B

data_7240329
_publ_section_title
;
 Relevant \p--hole tetrel bonding interactions in ethyl
 2-triazolyl-2-oxo-acetate derivatives: Hirshfeld surface analysis and DFT
 calculations
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/D0CE00335B
_journal_year                    2020
_chemical_formula_iupac          'C20 H19 N3 O4'
_chemical_formula_moiety         'C20 H19 N3 O4'
_chemical_formula_sum            'C20 H19 N3 O4'
_chemical_formula_weight         365.38
_chemical_name_systematic
;
Ethyl 2-(1-benzyl-4-(4-methoxyphenyl)-1H-1,2,3-triazol-5-yl)-2-oxoacetate
;
_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
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2019-12-30 deposited with the CCDC.	2020-04-17 downloaded from the CCDC.
;
_cell_angle_alpha                111.004(2)
_cell_angle_beta                 99.018(3)
_cell_angle_gamma                97.623(2)
_cell_formula_units_Z            2
_cell_length_a                   8.2922(6)
_cell_length_b                   9.4246(7)
_cell_length_c                   12.9343(10)
_cell_measurement_reflns_used    3299
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.230
_cell_measurement_theta_min      1.729
_cell_volume                     912.24(12)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'APEX2 (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics
'ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009)'
_computing_publication_material
;
WinGX (Farrugia, 1999) and PLATON (Spek, 2009)
;
_computing_structure_refinement  'SHELXL-2018/3  (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 7.77
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker Kappa APEXII CCD'
_diffrn_measurement_method       \w
_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  0.0271
_diffrn_reflns_av_unetI/netI     0.0205
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14140
_diffrn_reflns_theta_full        27.230
_diffrn_reflns_theta_max         27.230
_diffrn_reflns_theta_min         1.729
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.746
_exptl_absorpt_correction_T_min  0.670
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.330
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.258
_refine_diff_density_min         -0.250
_refine_diff_density_rms         0.035
_refine_ls_extinction_coef       0.131(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     249
_refine_ls_number_reflns         4016
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0553
_refine_ls_R_factor_gt           0.0456
_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^)+(0.0541P)^2^+0.2677P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1169
_refine_ls_wR_factor_ref         0.1259
_reflns_number_gt                3299
_reflns_number_total             4016
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            d0ce00335b2.cif
_cod_data_source_block           ACHINA
_cod_database_code               7240329
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.930
_shelx_estimated_absorpt_t_max   0.970
_shelx_res_checksum              37101