An indium(I) tetramer bound by anionic N-heterocyclic olefins: ambiphilic reactivity, transmetallation and a rare indium-imide.
Baird, Samuel R.; Hupf, Emanuel; Watson, Ian C.; Ferguson, Michael J.; Rivard, Eric; Chemical communications (Cambridge, England) 59 (2023) 2903–2906; doi:10.1039/d2cc07006e

data_7131236
_publ_section_title
;
 An indium(I) tetramer bound by anionic N-heterocyclic olefins: ambiphilic
 reactivity, transmetallation and a rare indium-imide.
;
_journal_issue                   20
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              2903
_journal_page_last               2906
_journal_paper_doi               10.1039/d2cc07006e
_journal_volume                  59
_journal_year                    2023
_chemical_formula_moiety         'C56 H78 Li2 N4, C7 H8'
_chemical_formula_sum            'C63 H86 Li2 N4'
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_chemical_properties_physical    Air-sensitive,Moisture-sensitive,Heat-sensitive
_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   mixed
_atom_sites_solution_primary     dual
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2022-11-29 deposited with the CCDC.	2023-01-30 downloaded from the CCDC.
;
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_cell_angle_gamma                90
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_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      73.50
_cell_measurement_theta_min      3.83
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_computing_cell_refinement       'Bruker SAINT'
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_computing_molecular_graphics    'Bruker SHELXTL'
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_computing_structure_solution    'SHELXT-2014/5 (Sheldrick, 2015)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.997
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_diffrn_reflns_limit_h_min       -24
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_diffrn_reflns_limit_l_min       -26
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_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.997
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_diffrn_source                   'Incoatec I\mS microfocus X-ray source'
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; 
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D., 
 J. Appl. Cryst. 48 (2015) 3-10 
;
_exptl_crystal_colour            colourless
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_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: toluene'
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_refine_ls_extinction_coef       0.00042(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     349
_refine_ls_number_reflns         5789
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0403
_refine_ls_R_factor_gt           0.0388
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0520P)^2^+2.8094P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1053
_refine_ls_wR_factor_ref         0.1068
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5491
_reflns_number_total             5789
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2cc07006e3.cif
_cod_data_source_block           riv21c5
_cod_depositor_comments
'Adding full bibliography for 7131233--7131238.cif.'
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7131236
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.867
_shelx_estimated_absorpt_t_max   0.910
_shelx_res_checksum              65549
_shelx_hkl_checksum              8949