Induction of helical chirality in tetrahedral transition metal complexes with non-bridging monodentate oxazolines.
Bakija, Marija; Perić, Berislav; Rinkovec, Tamara; Sanders, Ernest; Kokan, Zoran; Štefanić, Zoran; Vianello, Robert; Kirin, Srećko I; Dalton transactions (Cambridge, England : 2003) 54 (2025) 17083–17101; doi:10.1039/d5dt02399h

data_7719816
_publ_section_title
;
 Induction of helical chirality in tetrahedral transition metal complexes
 with non-bridging monodentate oxazolines.
;
_journal_issue                   46
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              17083
_journal_page_last               17101
_journal_paper_doi               10.1039/d5dt02399h
_journal_volume                  54
_journal_year                    2025
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C20 H20 N2 O4'
_chemical_formula_sum            'C20 H20 N2 O4'
_chemical_formula_weight         352.38
_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   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2019/3
_audit_update_record
;
2025-09-18 deposited with the CCDC.	2025-11-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 94.6030(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.54540(10)
_cell_length_b                   5.04070(10)
_cell_length_c                   32.1531(3)
_cell_measurement_reflns_used    8947
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      79.5990
_cell_measurement_theta_min      4.1120
_cell_volume                     895.87(3)
_computing_cell_refinement       'CrysAlisPro 1.171.43.136a (Rigaku OD, 2024)'
_computing_data_collection       'CrysAlisPro 1.171.43.136a (Rigaku OD, 2024)'
_computing_data_reduction        'CrysAlisPro 1.171.43.136a (Rigaku OD, 2024)'
_computing_structure_refinement  'SHELXL-2019/2 (Sheldrick, 2019)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 10.0000
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'XtaLAB Synergy, Dualflex, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0215
_diffrn_reflns_av_unetI/netI     0.0180
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            11105
_diffrn_reflns_point_group_measured_fraction_full 0.888
_diffrn_reflns_point_group_measured_fraction_max 0.848
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         79.543
_diffrn_reflns_theta_min         4.138
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.753
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.93704
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.43.136a (Rigaku Oxford Diffraction, 2024)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.306
_exptl_crystal_description       rod
_exptl_crystal_F_000             372
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.153
_refine_diff_density_min         -0.231
_refine_diff_density_rms         0.057
_refine_ls_abs_structure_details
;
 Flack x determined using 1135 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.08(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         3318
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0370
_refine_ls_R_factor_gt           0.0365
_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^)+(0.0544P)^2^+0.0808P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0927
_refine_ls_wR_factor_ref         0.0933
_reflns_Friedel_coverage         0.544
_reflns_Friedel_fraction_full    0.746
_reflns_Friedel_fraction_max     0.676
_reflns_number_gt                3263
_reflns_number_total             3318
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5dt02399h4.cif
_cod_data_source_block           1mAx
_cod_depositor_comments
'Adding full bibliography for 7719815--7719833.cif.'
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7719816
_shelx_shelxl_version_number     2019/3
_shelx_res_checksum              14903
_shelx_hkl_checksum              72153