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_7714735
_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         'C34 H42 N4 Ni O4, 2(C H Cl3)'
_chemical_formula_sum            'C36 H44 Cl6 N4 Ni O4'
_chemical_formula_weight         868.16
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2023-09-25
_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                 107.0760(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   10.7822(4)
_cell_length_b                   17.9182(5)
_cell_length_c                   11.2267(4)
_cell_measurement_reflns_used    9988
_cell_measurement_temperature    200.00
_cell_measurement_theta_max      27.453
_cell_measurement_theta_min      2.303
_cell_volume                     2073.35(12)
_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    '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, 2018), 
;
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      200.00
_diffrn_detector_area_resol_mean 7.4074
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.990
_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  0.0457
_diffrn_reflns_av_unetI/netI     0.0337
_diffrn_reflns_Laue_measured_fraction_full 0.988
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            56426
_diffrn_reflns_point_group_measured_fraction_full 0.988
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         27.487
_diffrn_reflns_theta_min         1.976
_diffrn_source                   'microfocus sealed tube'
_diffrn_source_current           1.4
_diffrn_source_power             0.0
_diffrn_source_type              'INCOATEC I\ms 3.0'
_diffrn_source_voltage           50
_exptl_absorpt_coefficient_mu    0.896
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6705
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016) was used for absorption correction.
wR2(int) was 0.0998 before and 0.0662 after correction.
The Ratio of minimum to maximum transmission is 0.8993.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.391
_exptl_crystal_description       block
_exptl_crystal_F_000             900
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.166
_exptl_crystal_size_min          0.057
_refine_diff_density_max         0.326
_refine_diff_density_min         -0.361
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.033(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     471
_refine_ls_number_reflns         9405
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0338
_refine_ls_R_factor_gt           0.0307
_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^)+(0.0294P)^2^+0.5602P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0681
_refine_ls_wR_factor_ref         0.0697
_reflns_Friedel_coverage         0.936
_reflns_Friedel_fraction_full    0.987
_reflns_Friedel_fraction_max     0.988
_reflns_number_gt                8896
_reflns_number_total             9405
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3dt03739h2.cif
_cod_data_source_block           pgsval2ni_0m_a
_cod_depositor_comments
'Adding full bibliography for 7714726--7714736.cif.'
_cod_database_code               7714735
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.951
_shelx_estimated_absorpt_t_min   0.820
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.967(11)
 0.033(11)
2. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
3.a Ternary CH refined with riding coordinates:
 C5(H5), C6(H6), C25(H25), C26(H26), C42(H42), C41(H41)
3.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C11(H11), C13(H13), C22(H22), C23(H23), C31(H31), C33(H33)
3.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C8(H8A,H8B,H8C), C15(H15A,H15B,H15C), C16(H16A,H16B,H16C),
 C17(H17A,H17B,H17C), C27(H27A,H27B,H27C), C28(H28A,H28B,H28C), C35(H35A,H35B,
 H35C), C36(H36A,H36B,H36C), C37(H37A,H37B,H37C)
;
_shelx_res_checksum              69590
_shelx_hkl_checksum              86825
_olex2_submission_special_instructions 'No special instructions were received'