Heavy alkali metal complexes of N-heterocyclic carbenes.
Groth, Lucie J.; Bockfeld, Dirk; Tamm, Matthias; Chemical communications (Cambridge, England) 61 (2025) 15806–15809; doi:10.1039/d5cc04534g

data_7134937
_publ_section_title
;
 Heavy alkali metal complexes of N-heterocyclic carbenes.
;
_journal_issue                   81
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              15806
_journal_page_last               15809
_journal_paper_doi               10.1039/d5cc04534g
_journal_volume                  61
_journal_year                    2025
_chemical_formula_moiety         'C45 H35 B F15 N2 Rb, 2.4(C4 H8 O), 0.6(C7 H8)'
_chemical_formula_sum            'C58.79 H59 B F15 N2 O2.4 Rb'
_chemical_formula_weight         1213.28
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2019/3
_audit_update_record
;
2025-08-06 deposited with the CCDC.	2025-09-02 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 103.790(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.6204(4)
_cell_length_b                   20.9998(8)
_cell_length_c                   22.0018(8)
_cell_measurement_reflns_used    34504
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.4320
_cell_measurement_theta_min      2.1340
_cell_volume                     5663.0(4)
_computing_cell_refinement       'CrysAlisPro 1.171.43.143a (Rigaku OD, 2024)'
_computing_data_collection
'CrysAlisPro system (CCD 43.123a 64-bit (release 20-05-2024))'
_computing_data_reduction        'CrysAlisPro 1.171.43.143a (Rigaku OD, 2024)'
_computing_publication_material
'OLEX2 v1.3 (O. V. Dolomanov et al., J. Appl. Cryst., 2009, 42, 339-341)'
_computing_structure_refinement
'SHELXL-2019/2 (G. M. Sheldrick, Acta Cryst., 2015, C71, 3-8)'
_computing_structure_solution
'SHELXT 2018/2 (G. M. Sheldrick, Acta Cryst., 2015, A71, 3-8)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type
'XtaLAB Synergy, Single source at offset/far, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0720
_diffrn_reflns_av_unetI/netI     0.0343
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            150719
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.103
_diffrn_reflns_theta_min         1.963
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'PhotonJet (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.968
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.737
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.43.143a (Rigaku Oxford Diffraction, 2024)
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            colourless
_exptl_crystal_density_diffrn    1.423
_exptl_crystal_description       block
_exptl_crystal_F_000             2488
_exptl_crystal_size_max          0.160
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.060
_refine_diff_density_max         0.628
_refine_diff_density_min         -0.571
_refine_diff_density_rms         0.063
_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     943
_refine_ls_number_reflns         12484
_refine_ls_number_restraints     584
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0718
_refine_ls_R_factor_gt           0.0487
_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^)+(0.0633P)^2^+5.3173P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1206
_refine_ls_wR_factor_ref         0.1313
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9364
_reflns_number_total             12484
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cc04534g2.cif
_cod_data_source_block           lgr26db
_cod_depositor_comments
'Adding full bibliography for 7134934--7134942.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_original_formula_sum        'C58.79 H59 B F15 N2 O2.40 Rb'
_cod_database_code               7134937
_shelx_shelxl_version_number     2019/3
_shelx_estimated_absorpt_t_min   0.860
_shelx_estimated_absorpt_t_max   0.944
_oxdiff_exptl_absorpt_empirical_full_min 0.405
_oxdiff_exptl_absorpt_empirical_full_max 2.366
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
- Detector area scaling
;
_chemical_oxdiff_usercomment     'from toluene, THF, -40 C'
_shelx_res_checksum              56974