Isomers of 2,2':6',2″-terpyridine and 2,6-dipyrazin-2-ylpyridine with aliphatic substituents: synthesis, coordination chemistry, and catalytic and anticancer activities.
Zhang, Guoqi; Mei, Haiyu; Kanina, Amy; Chocho, Marilyn; Hiyaev, Paulina; Cheng, Shu-Yuan; Neary, Michelle C.; Dalton transactions (Cambridge, England : 2003) 55 (2026) 2855–2867; doi:10.1039/d5dt02824h

data_7720220
_publ_section_title
;
 Isomers of 2,2':6',2&#x2033;-terpyridine and 2,6-dipyrazin-2-ylpyridine
 with aliphatic substituents: synthesis, coordination chemistry, and
 catalytic and anticancer activities.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2855
_journal_page_last               2867
_journal_paper_doi               10.1039/d5dt02824h
_journal_volume                  55
_journal_year                    2026
_chemical_formula_sum            'C17 H17 N5'
_chemical_formula_weight         291.36
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2025-10-22 deposited with the CCDC.	2026-01-09 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 107.302(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.2742(9)
_cell_length_b                   11.2472(6)
_cell_length_c                   10.3605(6)
_cell_measurement_reflns_used    4360
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      25.55
_cell_measurement_theta_min      2.85
_cell_volume                     1476.81(15)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker cmos'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0619
_diffrn_reflns_av_sigmaI/netI    0.0352
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            18916
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.74
_diffrn_reflns_theta_min         2.85
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.9902
_exptl_absorpt_correction_T_min  0.9837
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.310
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.182
_refine_diff_density_min         -0.196
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     202
_refine_ls_number_reflns         2814
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.0710
_refine_ls_R_factor_gt           0.0424
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0577P)^2^+0.2998P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0978
_refine_ls_wR_factor_ref         0.1138
_reflns_number_gt                1998
_reflns_number_total             2814
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d5dt02824h2.cif
_cod_data_source_block           umd700_a
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7720220