Substituent effects on the structure of [Ag(py-R)n](NO3) ionic pairs: structural and computational studies
Radiush, Ekaterina A.; Sinelnikov, Gleb O.; Sukhikh, Taisiya Sergeevna; Shurikov, Matvey K.; Shamshurin, Maxim; Semenov, Nikolay A.; Postnikov, Pavel S.; Sokolov, Maksim Nailyevich; Abramov, Pavel A.; CrystEngComm  (2025) –; doi:10.1039/D5CE00829H

data_7251105
_publ_section_title
;
 Substituent effects on the structure of [Ag(py-R)n](NO3) ionic pairs:
 structural and computational studies
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/D5CE00829H
_journal_year                    2025
_chemical_formula_sum            'C18 H21 Ag N4 O3'
_chemical_formula_weight         449.26
_space_group_crystal_system      trigonal
_space_group_IT_number           160
_space_group_name_Hall           'R 3 -2"'
_space_group_name_H-M_alt        'R 3 m :H'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           'CrysAlisPro 1.171.42.49 (Rigaku OD, 2022)'
_audit_update_record
;
2025-08-25 deposited with the CCDC.	2025-10-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            3
_cell_length_a                   15.040(4)
_cell_length_b                   15.040(4)
_cell_length_c                   7.918(3)
_cell_measurement_reflns_used    736
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      23.1910
_cell_measurement_theta_min      2.6800
_cell_volume                     1551.1(8)
_computing_cell_refinement       'CrysAlisPro 1.171.41.120a (Rigaku OD, 2021)'
_computing_data_collection       'CrysAlisPro 1.171.41.120a (Rigaku OD, 2021)'
_computing_data_reduction        'CrysAlisPro 1.171.41.120a (Rigaku OD, 2021)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 5.8140
_diffrn_detector_type            'Dectris Pilatus 3R 200K-A'
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device       'four-cycle diffractometer'
_diffrn_measurement_device_type  Tongda-5000
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1435
_diffrn_reflns_av_unetI/netI     0.1529
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            3468
_diffrn_reflns_point_group_measured_fraction_full 0.986
_diffrn_reflns_point_group_measured_fraction_max 0.952
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.509
_diffrn_reflns_theta_min         3.011
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.997
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.19506
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.120a (Rigaku Oxford Diffraction, 2021)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.

Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
- Detector area scaling
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.443
_exptl_crystal_description       needle
_exptl_crystal_F_000             684
_exptl_crystal_size_max          0.800
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.299
_refine_diff_density_min         -0.364
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details
;
 Classical Flack method preferred over Parsons because s.u. lower.
;
_refine_ls_abs_structure_Flack   0.2(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.979
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     77
_refine_ls_number_reflns         846
_refine_ls_number_restraints     31
_refine_ls_restrained_S_all      0.963
_refine_ls_R_factor_all          0.1391
_refine_ls_R_factor_gt           0.0667
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0850P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1735
_refine_ls_wR_factor_ref         0.1980
_reflns_Friedel_coverage         0.905
_reflns_Friedel_fraction_full    0.980
_reflns_Friedel_fraction_max     0.914
_reflns_number_gt                402
_reflns_number_total             846
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            d5ce00829h2.cif
_cod_data_source_block           3Me_SOL
_cod_original_cell_volume        1551.0(10)
_cod_database_code               7251105
_shelx_shelxl_version_number     2019/3
_shelx_estimated_absorpt_t_min   0.503
_shelx_estimated_absorpt_t_max   0.971
_shelx_res_checksum              64574