Isolation of the parent triplet titanocene <i>via</i> NHC stabilisation.
Meyer, Felix; Demeshko, Serhiy; Golz, Christopher; Townrow, Oliver P. E.; Fischer, Malte; Dalton transactions (Cambridge, England : 2003) 54 (2025) 8035–8040; doi:10.1039/d5dt00480b

data_7718176
_publ_section_title
;
 Isolation of the parent triplet titanocene <i>via</i> NHC stabilisation.
;
_journal_issue                   20
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8035
_journal_page_last               8040
_journal_paper_doi               10.1039/d5dt00480b
_journal_volume                  54
_journal_year                    2025
_chemical_formula_moiety         'C26 H42 N2 Si2 Zr'
_chemical_formula_sum            'C26 H42 N2 Si2 Zr'
_chemical_formula_weight         530.01
_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
_atom_sites_solution_primary     dual
_audit_creation_date             2024-06-11
_audit_creation_method
;FinalCif V138 by Daniel Kratzert, Freiburg 2024, 
https://dkratzert.de/finalcif.html
;
_audit_update_record
;
2025-01-23 deposited with the CCDC.	2025-02-28 downloaded from the CCDC.
;
_cell_angle_alpha                68.935(2)
_cell_angle_beta                 70.603(2)
_cell_angle_gamma                86.6360(10)
_cell_formula_units_Z            2
_cell_length_a                   10.0604(5)
_cell_length_b                   12.2719(6)
_cell_length_c                   12.7261(5)
_cell_measurement_reflns_used    9699
_cell_measurement_temperature    100.00
_cell_measurement_theta_max      32.551
_cell_measurement_theta_min      2.585
_cell_volume                     1379.66(11)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_collection
'Bruker BIS 8.5.1.2 Release/2023-09-07 and APEX5 2023.9-2'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'XT  (Sheldrick, 2015)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100.00
_diffrn_detector                 CPAD
_diffrn_detector_area_resol_mean 7.41
_diffrn_detector_type            'Bruker PHOTON III'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 VENTURE dual wavelength Mo/Ag'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_measurement_specimen_support 'MiTeGen micromount'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0172
_diffrn_reflns_av_unetI/netI     0.0097
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            73994
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         32.603
_diffrn_reflns_theta_min         2.036
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_type              'Incoatec I\ms'
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.501
_exptl_absorpt_correction_T_max  0.9489
_exptl_absorpt_correction_T_min  0.8939
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0695 before and 0.0257 after correction.
The Ratio of minimum to maximum transmission is 0.9420.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_description       block
_exptl_crystal_F_000             560
_exptl_crystal_size_max          0.325
_exptl_crystal_size_mid          0.285
_exptl_crystal_size_min          0.167
_refine_diff_density_max         0.634
_refine_diff_density_min         -0.334
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     291
_refine_ls_number_reflns         10029
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0171
_refine_ls_R_factor_gt           0.0167
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0236P)^2^+0.4056P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0475
_refine_ls_wR_factor_ref         0.0478
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9791
_reflns_number_total             10029
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5dt00480b3.cif
_cod_data_source_block           mo_2345_cg_0m
_cod_depositor_comments
'Adding full bibliography for 7718175--7718178.cif.'
_cod_database_code               7718176
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H,H,H,H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Others
 Sof(H4D)=Sof(H4E)=Sof(H4F)=1-FVAR(1)
 Sof(H4A)=Sof(H4B)=Sof(H4C)=FVAR(1)
3.a Ternary CH refined with riding coordinates:
 C24(H24)
3.b Aromatic/amide H refined with riding coordinates:
 C9(H9), C10(H10), C11(H11), C12(H12), C13(H13), C14(H14), C15(H15), C16(H16),
 C17(H17), C18(H18), C19(H19)
3.c Disordered Me refined as rotating group:
 C4(H4A,H4B,H4C,H4D,H4E,H4F)
3.d Idealised Me refined as rotating group:
 C3(H3A,H3B,H3C), C5(H5A,H5B,H5C), C6(H6A,H6B,H6C), C7(H7A,H7B,H7C), C8(H8A,
 H8B,H8C), C20(H20A,H20B,H20C), C23(H23A,H23B,H23C), C25(H25A,H25B,H25C),
 C26(H26A,H26B,H26C)
;
_olex2_submission_special_instructions 'No special instructions were received'
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.854
_shelx_estimated_absorpt_t_max   0.921
_diffrn_measurement_ambient_temperature_device_make 'Oxford Cryostream 800'
_shelx_res_checksum              95183
_shelx_hkl_checksum              95912