Synthesis, Structure, Catalytic, and Bio Activity of Some Metal Complexes and Coordination Polymer Featuring Imidazo[1,5-a]pyridine and Chromen[4,3-b]pyrrole-4-one
Rayasingh, Amlan Ranjan; Manivannan, Vadivelu; New Journal of Chemistry  (2026) –; doi:10.1039/D6NJ00431H

data_7064346
_publ_section_title
;
 Synthesis, structure, and catalytic- and bio-activity of some metal
 complexes and a coordination polymer featuring imidazo[1,5-a]pyridine and
 chromen[4,3-b]pyrrole-4-one
;
_journal_issue                   16
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              6746
_journal_page_last               6760
_journal_paper_doi               10.1039/D6NJ00431H
_journal_volume                  50
_journal_year                    2026
_chemical_formula_moiety         'C18 H12 Br Cl2 N3 Pd, 0.5[C3H7NO]'
_chemical_formula_sum            'C19.5 H15.5 Br Cl2 N3.5 O0.5 Pd'
_chemical_formula_weight         564.06
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2025-04-22
_audit_creation_method
;
Olex2 1.5
(compiled 2023.08.24 svn.re1ec1418 for OlexSys, GUI svn.r6817)
;
_audit_update_record
;
2025-05-24 deposited with the CCDC.	2026-03-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 118.195(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   26.286(2)
_cell_length_b                   11.0439(9)
_cell_length_c                   15.2328(13)
_cell_measurement_reflns_used    4567
_cell_measurement_temperature    297.00
_cell_measurement_theta_max      25.13
_cell_measurement_theta_min      2.28
_cell_volume                     3897.4(6)
_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  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      297.00
_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 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0492
_diffrn_reflns_av_unetI/netI     0.0619
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12662
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.165
_diffrn_reflns_theta_max         25.165
_diffrn_reflns_theta_min         1.758
_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    3.291
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6394
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0718 before and 0.0590 after correction.
The Ratio of minimum to maximum transmission is 0.8580.
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    1.923
_exptl_crystal_description       block
_exptl_crystal_F_000             2208
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.075
_refine_diff_density_max         0.960
_refine_diff_density_min         -0.575
_refine_diff_density_rms         0.132
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.160
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         3476
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.160
_refine_ls_R_factor_all          0.0929
_refine_ls_R_factor_gt           0.0662
_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^)+(0.0098P)^2^+56.5257P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1096
_refine_ls_wR_factor_ref         0.1199
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2617
_reflns_number_total             3476
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d6nj00431h2.cif
_cod_data_source_block           2g
_cod_depositor_comments
'Adding full bibliography for 7064343--7064354.cif.'
_cod_original_formula_sum        'C19.50 H15.50 Br Cl2 N3.50 O0.50 Pd'
_cod_database_code               7064346
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.790
_shelx_estimated_absorpt_t_min   0.656
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3), C4(H4), C8(H8), C9(H9), C10(H10), C11(H11), C14(H14),
 C15(H15), C16(H16), C17(H17)
;
_smtbx_masks_void_probe_radius   1.2
_smtbx_masks_void_truncation_radius 1.2
_olex2_submission_special_instructions 'No special instructions were received'