Reduction chemistry yields stable and soluble divalent lanthanide tris(pyrazolyl)borate complexes.
Chowdhury, Tajrian; Evans, Matthew J.; Coles, Martyn P.; Bailey, Anna G.; Peveler, William J.; Wilson, Claire; Farnaby, Joy H.; Chemical communications (Cambridge, England) 59 (2023) 2134–2137; doi:10.1039/d2cc03189b

data_7131258
_publ_section_title
;
 Reduction chemistry yields stable and soluble divalent lanthanide
 tris(pyrazolyl)borate complexes.
;
_journal_issue                   15
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              2134
_journal_page_last               2137
_journal_paper_doi               10.1039/d2cc03189b
_journal_volume                  59
_journal_year                    2023
_chemical_formula_moiety         'C18 H20 B2 N12 Yb'
_chemical_formula_sum            'C18 H20 B2 N12 Yb'
_chemical_formula_weight         599.12
_space_group_crystal_system      orthorhombic
_space_group_IT_number           18
_space_group_name_Hall           'P 2 2ab'
_space_group_name_H-M_alt        'P 21 21 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2022-08-09
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2022-08-10 deposited with the CCDC.	2022-12-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.2463(8)
_cell_length_b                   12.1041(6)
_cell_length_c                   13.4211(6)
_cell_measurement_reflns_used    3830
_cell_measurement_temperature    150
_cell_measurement_theta_max      25.87
_cell_measurement_theta_min      2.21
_cell_volume                     2314.3(2)
_computing_cell_refinement       'SAINT V8.37A (Bruker-AXS, 2016)'
_computing_data_collection       'APEX3 Ver. 2016.9-0 (Bruker-AXS, 2016)'
_computing_data_reduction        'APEX3 Ver. 2016.9-0 (Bruker-AXS, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS  (Sheldrick, 2008)'
_diffrn_ambient_temperature      150
_diffrn_detector                 'charge integrating pixel array detector'
_diffrn_detector_area_resol_mean 7.4074
_diffrn_detector_type            'Bruker PHOTON II'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_collimation    'focusing mirrors'
_diffrn_radiation_monochromator  'multilayer mirror optics'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0616
_diffrn_reflns_av_unetI/netI     0.0843
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            14658
_diffrn_reflns_point_group_measured_fraction_full 0.978
_diffrn_reflns_point_group_measured_fraction_max 0.963
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.283
_diffrn_reflns_theta_min         1.517
_diffrn_source                   'microfocus sealed tube'
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_type              'INCOATEC I\ms 3.0'
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.073
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6040
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0868 before and 0.0544 after correction.
The Ratio of minimum to maximum transmission is 0.8100.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            red
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.719
_exptl_crystal_description       plate
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.663
_refine_diff_density_min         -0.809
_refine_diff_density_rms         0.165
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.09(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     300
_refine_ls_number_reflns         5520
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.1008
_refine_ls_R_factor_gt           0.0494
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0331P)^2^+1.1160P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0906
_refine_ls_wR_factor_ref         0.1069
_reflns_Friedel_coverage         0.716
_reflns_Friedel_fraction_full    0.948
_reflns_Friedel_fraction_max     0.917
_reflns_number_gt                3326
_reflns_number_total             5520
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2cc03189b2.cif
_cod_data_source_block           1_Yb
_cod_depositor_comments
'Adding full bibliography for 7131257--7131266.cif.'
_cod_database_code               7131258
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.923
_shelx_estimated_absorpt_t_min   0.641
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.91(3)
 0.09(3)
2. Fixed Uiso
 At 1.2 times of:
  All B(H) groups, All C(H) groups
3.a Ternary CH refined with riding coordinates:
 B1(H1), B2(H2A)
3.b Aromatic/amide H refined with riding coordinates:
 C1(H1A), C2(H2), C3(H3), C4(H4), C5(H5), C6(H6), C7(H7), C8(H8), C9(H9),
 C10(H10), C11(H11), C12(H12), C13(H13), C14(H14), C15(H15), C16(H16), C17(H17),
  C18(H18)
;
_shelx_res_checksum              94641
_shelx_hkl_checksum              78933
_olex2_submission_special_instructions 'No special instructions were received'