N-Heterocyclic silylene complexes of nickel(0).
Glok, Eduard; Werner, Luis; Radius, Udo; Dalton transactions (Cambridge, England : 2003) 54 (2025) 14846–14861; doi:10.1039/d5dt01887k

data_1575769
_publ_section_title
;
 N-Heterocyclic silylene complexes of nickel(0).
;
_journal_issue                   39
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              14846
_journal_page_last               14861
_journal_paper_doi               10.1039/d5dt01887k
_journal_volume                  54
_journal_year                    2025
_chemical_formula_moiety         '2 (C54H72N8Si2Ni), 3 (C6H14)'
_chemical_formula_sum            'C126 H186 N16 Ni2 Si4'
_chemical_formula_weight         2154.68
_space_group_crystal_system      tetragonal
_space_group_IT_number           88
_space_group_name_Hall           '-I 4ad'
_space_group_name_H-M_alt        'I 41/a :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2025-08-07 deposited with the CCDC.	2025-09-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.2144(2)
_cell_length_b                   17.2144(2)
_cell_length_c                   40.8854(6)
_cell_measurement_reflns_used    12170
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      73.4490
_cell_measurement_theta_min      2.7560
_cell_volume                     12115.8(3)
_computing_cell_refinement       'CrysAlisPro 1.171.40.53 (Rigaku OD, 2019)'
_computing_data_collection       'CrysAlisPro 1.171.40.53 (Rigaku OD, 2019)'
_computing_data_reduction        'CrysAlisPro 1.171.40.53 (Rigaku OD, 2019)'
_computing_molecular_graphics    'ShelXLe (Huebschle et all, 2011)'
_computing_publication_material  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.0000
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'XtaLAB Synergy, Dualflex, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0329
_diffrn_reflns_av_unetI/netI     0.0250
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       45
_diffrn_reflns_limit_l_min       -50
_diffrn_reflns_number            32775
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.981
_diffrn_reflns_theta_full        72.000
_diffrn_reflns_theta_max         73.798
_diffrn_reflns_theta_min         4.137
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    1.176
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.810
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.73a (Rigaku Oxford Diffraction, 2020)
Numerical absorption correction based on gaussian integration over
a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.181
_exptl_crystal_description       block
_exptl_crystal_F_000             4664
_exptl_crystal_size_max          0.110
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.040
_refine_diff_density_max         0.639
_refine_diff_density_min         -0.580
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     329
_refine_ls_number_reflns         6031
_refine_ls_number_restraints     20
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0666
_refine_ls_R_factor_gt           0.0538
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1072P)^2^+10.6326P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1571
_refine_ls_wR_factor_ref         0.1680
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4867
_reflns_number_total             6031
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5dt01887k2.cif
_cod_data_source_block           compound_5
_cod_depositor_comments
'Adding full bibliography for 1575761--1575772.cif.'
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_database_code               1575769
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.882
_shelx_estimated_absorpt_t_max   0.954
_shelx_res_checksum              83297