2,6-Bis(benzimidazol-2-yl)pyridines as more electron-rich and sterically accessible alternatives to 2,6-bis(imino)pyridine for group 13 coordination chemistry.
Swidan, Ala'aeddeen; Binder, Justin F.; Onge, Blake J St; Suter, Riccardo; Burford, Neil; Macdonald, Charles L. B.; Dalton transactions (Cambridge, England : 2003) 48 (2019) 1284–1291; doi:10.1039/c8dt04276d

data_7048408
_publ_section_title
;
 2,6-Bis(benzimidazol-2-yl)pyridines as more electron-rich and sterically
 accessible alternatives to 2,6-bis(imino)pyridine for group 13
 coordination chemistry.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1284
_journal_page_last               1291
_journal_paper_doi               10.1039/c8dt04276d
_journal_volume                  48
_journal_year                    2019
_chemical_formula_moiety         'C19 H11 Cl2 Ga N3 O2, Cl4 Ga'
_chemical_formula_sum            'C19 H11 Cl6 Ga2 N3 O2'
_chemical_formula_weight         665.45
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2018-07-23
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2018-09-27 deposited with the CCDC.
2018-12-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.92
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.692
_cell_length_b                   9.329
_cell_length_c                   26.919
_cell_measurement_reflns_used    9591
_cell_measurement_temperature    170
_cell_measurement_theta_max      74.892
_cell_measurement_theta_min      5.801
_cell_volume                     2397.537
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_collection       APEX3
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      170.08
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEX3 Photon 100'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0732
_diffrn_reflns_av_unetI/netI     0.0464
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            38330
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         74.614
_diffrn_reflns_theta_min         3.333
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    9.119
_exptl_absorpt_correction_T_max  0.7538
_exptl_absorpt_correction_T_min  0.3038
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1890 before and 0.1309 after correction. The Ratio of minimum to maximum transmission is 0.4030. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.844
_exptl_crystal_description       prism
_exptl_crystal_F_000             1304
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.914
_refine_diff_density_min         -1.643
_refine_diff_density_rms         0.283
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.166
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4898
_refine_ls_number_restraints     162
_refine_ls_restrained_S_all      1.193
_refine_ls_R_factor_all          0.0670
_refine_ls_R_factor_gt           0.0664
_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^)+(0.1178P)^2^+3.8180P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1744
_refine_ls_wR_factor_ref         0.1752
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4804
_reflns_number_total             4898
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt04276d2.cif
_cod_data_source_block           as1050_p21c
_cod_depositor_comments
;
Adding full bibliography for 7048404--7048410.cif.

2025-03-29
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_cell_volume        2397.6
_cod_original_formula_moiety     '4(C19 H11 Cl2 Ga N3 O2), 4(Cl4 Ga)'
_cod_original_formula_sum        'C76 H44 Cl24 Ga8 N12 O8'
_cod_original_formula_units_Z    1
_cod_original_formula_weight     2661.79
_cod_database_code               7048408
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.342
_shelx_estimated_absorpt_t_min   0.111
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2. Uiso/Uaniso restraints and constraints
Uanis(C12) \\sim Ueq, Uanis(Ga1) \\sim Ueq, Uanis(Cl1) \\sim Ueq, Uanis(Cl2)
\\sim Ueq, Uanis(N2) \\sim Ueq, Uanis(N3) \\sim Ueq, Uanis(N1) \\sim Ueq,
Uanis(C8) \\sim Ueq, Uanis(C19) \\sim Ueq, Uanis(C13) \\sim Ueq, Uanis(C7)
\\sim Ueq, Uanis(C1) \\sim Ueq, Uanis(C9) \\sim Ueq, Uanis(C11) \\sim Ueq,
Uanis(C14) \\sim Ueq, Uanis(C18) \\sim Ueq, Uanis(O2) \\sim Ueq, Uanis(O1)
\\sim Ueq, Uanis(C6) \\sim Ueq, Uanis(C2) \\sim Ueq, Uanis(C10) \\sim Ueq,
Uanis(C15) \\sim Ueq, Uanis(C17) \\sim Ueq, Uanis(C5) \\sim Ueq, Uanis(C3)
\\sim Ueq, Uanis(C16) \\sim Ueq, Uanis(C4) \\sim Ueq: with sigma of 0.002 and
sigma for terminal atoms of 0.004
3.a Aromatic/amide H refined with riding coordinates:
 C11(H11), C9(H9), C2(H2), C5(H5), C18(H18), C10(H10), C4(H4), C17(H17),
 C15(H15), C3(H3), C16(H16)
;
_shelx_res_checksum              58358
_olex2_submission_special_instructions 'No special instructions were received'