Unique selectivity of rare-earth metal ambiphilic carbenes towards organic molecules and novel reactivity patterns with isonitriles
Chai, Fuxiang; Wu, Weikang; Rajeshkumar, Thayalan; Huang, Zeming; Yuan, Qingbing; Wei, Yun; Maron, Laurent; Wang, Shaowu; Chemical Science 16 (2025) 11870–11887; doi:10.1039/D5SC01502B

data_1574709
_publ_section_title
;
 Unique selectivity of rare-earth metal ambiphilic carbenes towards
 organic molecules and novel reactivity patterns with isonitriles
;
_journal_issue                   26
_journal_name_full               'Chemical Science'
_journal_page_first              11870
_journal_page_last               11887
_journal_paper_doi               10.1039/D5SC01502B
_journal_volume                  16
_journal_year                    2025
_chemical_formula_moiety         'C30 H59 N4 O Si2 Yb'
_chemical_formula_sum            'C30 H59 N4 O Si2 Yb'
_chemical_formula_weight         721.03
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2024-07-08
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6408)
;
_audit_update_record
;
2025-01-26 deposited with the CCDC.	2025-05-23 downloaded from the CCDC.
;
_cell_angle_alpha                92.614(2)
_cell_angle_beta                 111.711(2)
_cell_angle_gamma                95.266(2)
_cell_formula_units_Z            2
_cell_length_a                   10.8997(6)
_cell_length_b                   12.7508(7)
_cell_length_c                   14.5651(8)
_cell_measurement_reflns_used    9094
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      29.80
_cell_measurement_theta_min      2.73
_cell_volume                     1865.78(18)
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.862
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0515
_diffrn_reflns_av_unetI/netI     0.0435
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.862
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            60789
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.862
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         33.712
_diffrn_reflns_theta_min         2.025
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.595
_exptl_absorpt_correction_T_max  0.7467
_exptl_absorpt_correction_T_min  0.3458
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1032 before and 0.0565 after correction.
The Ratio of minimum to maximum transmission is 0.4631.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            red
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_description       block
_exptl_crystal_F_000             746
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.538
_refine_diff_density_min         -0.998
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     461
_refine_ls_number_reflns         12815
_refine_ls_number_restraints     308
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0381
_refine_ls_R_factor_gt           0.0276
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0290P)^2^+0.2488P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0630
_refine_ls_wR_factor_ref         0.0655
_reflns_Friedel_coverage         0.000
_reflns_number_gt                11112
_reflns_number_total             12815
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5sc01502b2.cif
_cod_data_source_block           1b
_cod_depositor_comments
'Adding full bibliography for 1574708--1574717.cif.'
_cod_database_code               1574709
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.781
_shelx_estimated_absorpt_t_min   0.652
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All C(H,H,H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained distances
 N4A-C17A = N4-C18 = N4A-C18A = N4-C17 = N4-C16 = N4A-C16A
 1.47 with sigma of 0.01
3. Uiso/Uaniso restraints and constraints
C15 \\sim C16 \\sim C17 \\sim C18 \\sim N4 \\sim C16A \\sim C17A \\sim C18A
\\sim N4A: within 2A with sigma of 0.01 and sigma for terminal atoms of 0.02
within 2A
O1 \\sim C27 \\sim C28 \\sim C29 \\sim C30 \\sim C27A \\sim C28A \\sim C29A
\\sim C30A: within 2A with sigma of 0.01 and sigma for terminal atoms of 0.02
within 2A
Si2 \\sim C24 \\sim C25 \\sim C26 \\sim C24A \\sim C25A \\sim C26A: within 2A
with sigma of 0.01 and sigma for terminal atoms of 0.02 within 2A
4. Same fragment restrains
{C15, C16A, C17A, C18A} sigma for 1-2: 0.01, 1-3: 0.02
as in
{C15, C16, C17, C18}
{O1, C27A, C28A, C29A, C30A} sigma for 1-2: 0.01, 1-3: 0.02
as in
{O1, C27, C28, C29, C30}
{Si2, C24A, C25A, C26A} sigma for 1-2: 0.01, 1-3: 0.02
as in
{Si2, C24, C25, C26}
5. Others
 Sof(H15C)=Sof(H15D)=Sof(C16A)=Sof(H16C)=Sof(H16D)=Sof(C17A)=Sof(H17D)=
 Sof(H17E)=Sof(H17F)=Sof(C18A)=Sof(H18D)=Sof(H18E)=Sof(H18F)=Sof(N4A)=1-FVAR(1)
 Sof(H15A)=Sof(H15B)=Sof(C16)=Sof(H16A)=Sof(H16B)=Sof(C17)=Sof(H17A)=Sof(H17B)=
 Sof(H17C)=Sof(C18)=Sof(H18A)=Sof(H18B)=Sof(H18C)=Sof(N4)=FVAR(1)
 Sof(C24A)=Sof(H24D)=Sof(H24E)=Sof(H24F)=Sof(C25A)=Sof(H25D)=Sof(H25E)=
 Sof(H25F)=Sof(C26A)=Sof(H26D)=Sof(H26E)=Sof(H26F)=1-FVAR(2)
 Sof(C24)=Sof(H24A)=Sof(H24B)=Sof(H24C)=Sof(C25)=Sof(H25A)=Sof(H25B)=Sof(H25C)=
 Sof(C26)=Sof(H26A)=Sof(H26B)=Sof(H26C)=FVAR(2)
 Sof(C27A)=Sof(H27C)=Sof(H27D)=Sof(C28A)=Sof(H28C)=Sof(H28D)=Sof(C29A)=
 Sof(H29C)=Sof(H29D)=Sof(C30A)=Sof(H30C)=Sof(H30D)=1-FVAR(3)
 Sof(C27)=Sof(H27A)=Sof(H27B)=Sof(C28)=Sof(H28A)=Sof(H28B)=Sof(C29)=Sof(H29A)=
 Sof(H29B)=Sof(C30)=Sof(H30A)=Sof(H30B)=FVAR(3)
6.a Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B), C11(H11A,H11B), C12(H12A,H12B), C15(H15A,H15B), C15(H15C,H15D),
 C16(H16A,H16B), C19(H19A,H19B), C23(H23A,H23B), C27(H27A,H27B), C28(H28A,H28B),
  C29(H29A,H29B), C30(H30A,H30B), C16A(H16C,H16D), C27A(H27C,H27D), C28A(H28C,
 H28D), C29A(H29C,H29D), C30A(H30C,H30D)
6.b Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C7(H7)
6.c Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C13(H13A,H13B,H13C), C14(H14A,H14B,H14C), C17(H17A,H17B,
 H17C), C18(H18A,H18B,H18C), C20(H20A,H20B,H20C), C21(H21A,H21B,H21C), C22(H22A,
 H22B,H22C), C24(H24A,H24B,H24C), C25(H25A,H25B,H25C), C26(H26A,H26B,H26C),
 C17A(H17D,H17E,H17F), C18A(H18D,H18E,H18F), C24A(H24D,H24E,H24F), C25A(H25D,
 H25E,H25F), C26A(H26D,H26E,H26F)
;
_shelx_res_checksum              70315
_olex2_submission_special_instructions 'No special instructions were received'