Palladium(II) and platinum(II) complexes of disubstituted imidazo[1,5-<i>a</i>]pyridine and imidazolylpyridine: coordination chemistry, versatile catalysis, and biophysical study.
Rayasingh, Amlan Ranjan; Manivannan, Vadivelu; Dalton transactions (Cambridge, England : 2003) 54 (2025) 7741–7752; doi:10.1039/d5dt00346f

data_7718486
_publ_section_title
;
 Palladium(II) and platinum(II) complexes of disubstituted
 imidazo[1,5-<i>a</i>]pyridine and imidazolylpyridine: coordination
 chemistry, versatile catalysis, and biophysical study.
;
_journal_issue                   19
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7741
_journal_page_last               7752
_journal_paper_doi               10.1039/d5dt00346f
_journal_volume                  54
_journal_year                    2025
_chemical_formula_moiety         '2(C18 H14 Cl4 N6 Pt2), 4(C3 H7 N O)'
_chemical_formula_sum            'C48 H56 Cl8 N16 O4 Pt4'
_chemical_formula_weight         1985.04
_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     dual
_audit_creation_date             2025-02-02
_audit_creation_method
;
Olex2 1.5
(compiled 2021.12.09 svn.r5202d8cf for OlexSys, GUI svn.r6439)
;
_audit_update_record
;
2025-02-11 deposited with the CCDC.	2025-04-01 downloaded from the CCDC.
;
_cell_angle_alpha                110.893(4)
_cell_angle_beta                 92.382(4)
_cell_angle_gamma                103.115(4)
_cell_formula_units_Z            2
_cell_length_a                   13.218(2)
_cell_length_b                   15.636(3)
_cell_length_c                   16.364(3)
_cell_measurement_reflns_used    9190
_cell_measurement_temperature    295.00
_cell_measurement_theta_max      27.34
_cell_measurement_theta_min      2.22
_cell_volume                     3049.3(9)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      295.00
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'Bruker SMART CCD 1K area detector'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0438
_diffrn_reflns_av_unetI/netI     0.0300
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            81949
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.452
_diffrn_reflns_theta_min         1.559
_diffrn_source                   'sealed X-ray tube'
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_target            Mo
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    9.553
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.2312
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1654 before and 0.0616 after correction.
The Ratio of minimum to maximum transmission is 0.3101.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'metallic yellow'
_exptl_crystal_colour_lustre     metallic
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    2.162
_exptl_crystal_description       block
_exptl_crystal_F_000             1872
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         1.127
_refine_diff_density_min         -2.047
_refine_diff_density_rms         0.137
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.085
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     729
_refine_ls_number_reflns         13875
_refine_ls_number_restraints     1020
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0420
_refine_ls_R_factor_gt           0.0302
_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^)+(0.0140P)^2^+12.0594P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0609
_refine_ls_wR_factor_ref         0.0684
_reflns_Friedel_coverage         0.000
_reflns_number_gt                11672
_reflns_number_total             13875
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5dt00346f2.cif
_cod_data_source_block           2b2pt_0m
_cod_depositor_comments
'Adding full bibliography for 7718485--7718490.cif.'
_cod_original_cell_volume        3049.3(8)
_cod_database_code               7718486
_shelx_shelxl_version_number     2019/1
_shelx_estimated_absorpt_t_max   0.420
_shelx_estimated_absorpt_t_min   0.348
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Uiso/Uaniso restraints and constraints
All non-hydrogen atoms have similar U: within 2A with sigma of 0.04 and sigma
for terminal atoms of 0.08 within 2A
3. Rigid body (RIGU) restrains
 All non-hydrogen atoms
 with sigma for 1-2 distances of 0.004 and sigma for 1-3 distances of 0.004
4.a Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3), C4(H4), C7(H7), C8(H8), C9(H9), C10(H10), C15(H15),
 C16(H16), C17(H17), C18(H18), C19(H19), C20(H20), C21(H21), C22(H22), C27(H27),
  C28(H28), C29(H29), C30(H30), C33(H33), C34(H34), C35(H35), C36(H36),
 C45(H45), C48(H48), C39(H39), C42(H42)
4.b X=CH2 refined with riding coordinates:
 N5(H5A,H5B), N12(H12A,H12B)
4.c Idealised Me refined as rotating group:
 C43(H43A,H43B,H43C), C44(H44A,H44B,H44C), C46(H46A,H46B,H46C), C47(H47A,H47B,
 H47C), C37(H37A,H37B,H37C), C38(H38A,H38B,H38C), C40(H40A,H40B,H40C), C41(H41A,
 H41B,H41C)
;
_smtbx_masks_void_probe_radius   1.2
_smtbx_masks_void_truncation_radius 1.2
_olex2_submission_special_instructions 'No special instructions were received'