Carbon-carbon bond formation and cleavage at redox active bis(pyridylimino)isoindole (BPI) germylene compounds.
Nicasio, Antonio I.; Somerville, Rosie J.; Sahagún, Pablo; Soto, Enrique; López-Serrano, Joaquín; Campos, Jesús; Dalton transactions (Cambridge, England : 2003) 54 (2025) 3039–3046; doi:10.1039/d4dt03489a

data_7718244
_publ_section_title
;
 Carbon-carbon bond formation and cleavage at redox active
 bis(pyridylimino)isoindole (BPI) germylene compounds.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3039
_journal_page_last               3046
_journal_paper_doi               10.1039/d4dt03489a
_journal_volume                  54
_journal_year                    2025
_chemical_formula_sum            'C18 H12 Cl Ge N5'
_chemical_formula_weight         406.37
_space_group_crystal_system      tetragonal
_space_group_IT_number           78
_space_group_name_Hall           'P 4cw'
_space_group_name_H-M_alt        'P 43'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2024-11-15 deposited with the CCDC.	2025-01-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.5687(15)
_cell_length_b                   18.5687(15)
_cell_length_c                   5.0359(6)
_cell_measurement_reflns_used    3503
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      28.27
_cell_measurement_theta_min      2.45
_cell_volume                     1736.4(3)
_computing_cell_refinement       'Bruker APEX3'
_computing_data_collection       'Bruker APEX3'
_computing_data_reduction        'Bruker APEX3'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Bruker D8Quest'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0896
_diffrn_reflns_av_unetI/netI     0.0931
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.983
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            15125
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.960
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.267
_diffrn_reflns_theta_min         2.194
_diffrn_source                   'IuS 3.0 Microfocus Source'
_exptl_absorpt_coefficient_mu    1.928
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6237
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   ' Apex3 v2016.9-0 (Bruker, 2016)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.554
_exptl_crystal_description       block
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_platon_squeeze_details
;
The unit cell contains 1 pentane molecules which have
 been treated as a diffuse contribution to the overall scattering
 without specific atom positions by SQUEEZE/PLATON.'
;
_refine_diff_density_max         1.016
_refine_diff_density_min         -0.758
_refine_diff_density_rms         0.116
_refine_ls_abs_structure_details
;
 Flack x determined using 1079 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.036(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.181
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         4145
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.181
_refine_ls_R_factor_all          0.0927
_refine_ls_R_factor_gt           0.0728
_refine_ls_shift/su_max          0.037
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0392P)^2^+2.7491P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1305
_refine_ls_wR_factor_ref         0.1362
_reflns_Friedel_coverage         0.757
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.931
_reflns_number_gt                3371
_reflns_number_total             4145
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4dt03489a3.cif
_cod_data_source_block           jcm06421a_sq
_cod_database_code               7718244
_shelx_shelxl_version_number     2014/7
_platon_squeeze_void_probe_radius 1.20
_shelx_res_checksum              39970
_shelx_fab_checksum              21346