Unveiling n → π* interactions: convergence of quantum crystallography and computational insights.
Polo, Alvaro; García-Orduña, Pilar; Echeverría, Jorge; Sanz Miguel, Pablo J.; Dalton transactions (Cambridge, England : 2003) 55 (2026) 2825–2832; doi:10.1039/d5dt02386f

data_7720179
_publ_section_title
;
 Unveiling n &#x2192; &#x3c0;* interactions: convergence of quantum
 crystallography and computational insights.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2825
_journal_page_last               2832
_journal_paper_doi               10.1039/d5dt02386f
_journal_volume                  55
_journal_year                    2026
_chemical_formula_moiety         'C7 H13 N4 O, Cl'
_chemical_formula_sum            'C7 H13 Cl N4 O'
_chemical_formula_weight         204.66
_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   difmap
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2025-07-24 deposited with the CCDC.	2025-12-19 downloaded from the CCDC.
;
_cell_angle_alpha                68.6656(14)
_cell_angle_beta                 77.5428(14)
_cell_angle_gamma                87.0433(15)
_cell_formula_units_Z            2
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_cell_length_b                   7.8928(4)
_cell_length_c                   9.8692(5)
_cell_measurement_reflns_used    9820
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.29
_cell_measurement_theta_min      2.88
_cell_volume                     460.70(4)
_computing_cell_refinement       'SAINT V8.40B (Bruker AXS, 2016) in APEX3'
_computing_data_collection       'SAINT V8.40B (Bruker AXS, 2016) in APEX3'
_computing_data_reduction        'SAINT V8.40B (Bruker AXS, 2016) in APEX3'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 2012)'
_computing_publication_material  'XCIF program, PLATON(Spek, 1998)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXS-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0231
_diffrn_reflns_av_unetI/netI     0.0263
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       8
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_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            19802
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         28.295
_diffrn_reflns_theta_min         2.267
_diffrn_source                   'Mo microsource'
_exptl_absorpt_coefficient_mu    0.381
_exptl_absorpt_correction_T_max  0.981
_exptl_absorpt_correction_T_min  0.946
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.475
_exptl_crystal_description       prism
_exptl_crystal_F_000             216
_exptl_crystal_size_max          0.110
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.391
_refine_diff_density_min         -0.251
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     170
_refine_ls_number_reflns         2285
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.0276
_refine_ls_R_factor_gt           0.0274
_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^)+(0.0226P)^2^+0.2303P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0691
_refine_ls_wR_factor_ref         0.0693
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2261
_reflns_number_total             2285
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5dt02386f2.cif
_cod_data_source_block           1_CCDC1
_cod_database_code               7720179
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.959
_shelx_estimated_absorpt_t_max   0.981
_shelx_res_checksum              11430