Half-sandwich Ni(II) complexes bearing enantiopure bidentate NHC-carboxylate ligands: efficient catalysts for the hydrosilylative reduction of acetophenones.
Sanz-Garrido, Jorge; Martin, Avelino; González-Arellano, Camino; Flores, Juan C.; Dalton transactions (Cambridge, England : 2003) 53 (2024) 1460–1468; doi:10.1039/d3dt03739h

data_7714734
_publ_section_title
;
 Half-sandwich Ni(II) complexes bearing enantiopure bidentate
 NHC-carboxylate ligands: efficient catalysts for the hydrosilylative
 reduction of acetophenones.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1460
_journal_page_last               1468
_journal_paper_doi               10.1039/d3dt03739h
_journal_volume                  53
_journal_year                    2024
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C22 H26 N2 Ni O2 S'
_chemical_formula_sum            'C22 H26 N2 Ni O2 S'
_chemical_formula_weight         441.22
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2023-09-19
_audit_creation_method
;
Olex2 1.5
(compiled 2023.08.24 svn.re1ec1418 for OlexSys, GUI svn.r6817)
;
_audit_update_record
;
2023-10-23 deposited with the CCDC.	2023-12-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5632(3)
_cell_length_b                   14.2948(5)
_cell_length_c                   16.1641(6)
_cell_measurement_reflns_used    9630
_cell_measurement_temperature    200.00
_cell_measurement_theta_max      27.155
_cell_measurement_theta_min      2.520
_cell_volume                     2209.70(13)
_computing_cell_refinement       'SAINT V8.40B (Bruker, 2019)'
_computing_data_collection       'Apex3 v2019.11-0 (Bruker, 2019)'
_computing_data_reduction        'SAINT V8.40B (Bruker, 2019)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement
;
SHELXL-2018/3 (Sheldrick, 2015, 2018), 
;
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      200.00
_diffrn_detector_area_resol_mean 7.4074
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type
;
Bruker AXS D8 Venture diffractometer with PhotonIII_C14 charge-integrating and 
photon counting pixel array detector
;
_diffrn_measurement_method       'omega and phi 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  0.0603
_diffrn_reflns_av_unetI/netI     0.0400
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            35090
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.495
_diffrn_reflns_theta_min         2.475
_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
_exptl_absorpt_coefficient_mu    0.991
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6558
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1295 before and 0.0792 after correction.
The Ratio of minimum to maximum transmission is 0.8796.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.326
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.464
_exptl_crystal_size_mid          0.073
_exptl_crystal_size_min          0.049
_refine_diff_density_max         0.293
_refine_diff_density_min         -0.272
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details
;
 Flack x determined using 1646 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.008(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     257
_refine_ls_number_reflns         5070
_refine_ls_number_restraints     60
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0481
_refine_ls_R_factor_gt           0.0338
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0393P)^2^+0.3443P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0753
_refine_ls_wR_factor_ref         0.0832
_reflns_Friedel_coverage         0.771
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                4245
_reflns_number_total             5070
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3dt03739h2.cif
_cod_data_source_block           jcf_metni_2_0m_a
_cod_depositor_comments
'Adding full bibliography for 7714726--7714736.cif.'
_cod_database_code               7714734
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.953
_shelx_estimated_absorpt_t_min   0.656
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Uiso/Uaniso restraints and constraints
C25 \\sim C24 \\sim C23 \\sim C22 \\sim C21: within 1.7A with sigma of 0.04 and
sigma for terminal atoms of 0.08 within 1.7A
Uanis(C21) \\sim Ueq, Uanis(C25) \\sim Ueq, Uanis(C24) \\sim Ueq, Uanis(C23)
\\sim Ueq, Uanis(C22) \\sim Ueq: with sigma of 0.1 and sigma for terminal atoms
of 0.2
3.a Ternary CH refined with riding coordinates:
 C13(H13)
3.b Secondary CH2 refined with riding coordinates:
 C15(H15A,H15B), C16(H16A,H16B)
3.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C6(H6), C8(H8), C21(H21), C22(H22), C23(H23), C24(H24),
 C25(H25)
3.d Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C11(H11A,H11B,H11C), C12(H12A,H12B,H12C), C17(H17A,H17B,
 H17C)
;
_shelx_res_checksum              37307
_shelx_hkl_checksum              95186
_olex2_submission_special_instructions 'No special instructions were received'