Synthesis, structure and DFT calculation of bi- and tridentate ketiminate ligand-assisted aluminum complexes: potential catalyst for styrene oxide–CO2 cycloaddition reaction
Chao, Yu-Chieh; Hung, Yu-Hsuan; Su, Yu-Chia; Ko, Bao-Tsan; Cheng, Ban-Jing; Hu, Ching-Han; Ting, Chien-Ling; Liu, Guan-Lin; Dehury, Budheswar; Huang, Jui-Hsien; Datta, Amitabha; New Journal of Chemistry 49 (2025) 19269–19280; doi:10.1039/D5NJ03282B

data_7064067
_publ_section_title
;
 Synthesis, structure and DFT calculation of bi- and tridentate ketiminate
 ligand-assisted aluminum complexes: potential catalyst for styrene
 oxide--CO2 cycloaddition reaction
;
_journal_issue                   44
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              19269
_journal_page_last               19280
_journal_paper_doi               10.1039/D5NJ03282B
_journal_volume                  49
_journal_year                    2025
_chemical_formula_moiety         'C18 H19 N O2'
_chemical_formula_sum            'C18 H19 N O2'
_chemical_formula_weight         281.34
_space_group_crystal_system      tetragonal
_space_group_IT_number           86
_space_group_name_Hall           '-P 4bc'
_space_group_name_H-M_alt        'P 42/n :2'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2023-04-09
_audit_creation_method
;
Olex2 1.2-ac3
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2023-04-09 deposited with the CCDC.	2025-09-30 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   18.434(3)
_cell_length_b                   18.434(3)
_cell_length_c                   9.0300(13)
_cell_measurement_reflns_used    4556
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      24.45
_cell_measurement_theta_min      3.21
_cell_volume                     3068.5(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      150.15
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1029
_diffrn_reflns_av_unetI/netI     0.0409
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            47518
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        24.970
_diffrn_reflns_theta_max         24.970
_diffrn_reflns_theta_min         2.471
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.992
_exptl_absorpt_correction_T_min  0.988
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_density_diffrn    1.218
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1200
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.409
_refine_diff_density_min         -0.405
_refine_diff_density_rms         0.094
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.092
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         2684
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.092
_refine_ls_R_factor_all          0.1711
_refine_ls_R_factor_gt           0.1236
_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^)+(0.0969P)^2^+12.6820P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2932
_refine_ls_wR_factor_ref         0.3372
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1945
_reflns_number_total             2684
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5nj03282b2.cif
_cod_data_source_block           by45
_cod_depositor_comments
'Adding full bibliography for 7064063--7064068.cif.'
_cod_original_cell_volume        3068.5(11)
_cod_original_sg_symbol_H-M      'P 42/n'
_cod_database_code               7064067
_shelx_shelxl_version_number     2018/3
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.9963(13)
 0.0037(13)
2. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
3. Uiso/Uaniso restraints and constraints
Uanis(C8) = Uanis(C8A)
Uanis(C9) = Uanis(C9A)
Uanis(C10) = Uanis(C10A)
Uanis(C11) = Uanis(C11A)
Uanis(C16) = Uanis(C16A)
Uanis(C15) = Uanis(C15A)
4. Others
 Sof(C8A)=Sof(C15A)=Sof(H15A)=Sof(C16A)=Sof(H16A)=Sof(C11A)=Sof(H11A)=
 Sof(C10A)=Sof(H10A)=Sof(C9A)=Sof(H9A)=1-FVAR(1)
 Sof(C8)=Sof(C9)=Sof(H9)=Sof(C10)=Sof(H10)=Sof(C11)=Sof(H11)=Sof(C15)=Sof(H15)=
 Sof(C16)=Sof(H16)=FVAR(1)
5.a Aromatic/amide H refined with riding coordinates:
 N1(H1), C1(H1A), C3(H3), C6(H6), C9(H9), C10(H10), C11(H11), C15(H15),
 C16(H16), C17(H17), C15A(H15A), C16A(H16A), C11A(H11A), C10A(H10A), C9A(H9A)
5.b Fitted hexagon refined as free rotating group:
 C8A(C15A,C16A,C11A,C10A,C9A)
5.c Idealised Me refined as rotating group:
 C12(H12A,H12B,H12C), C14(H14A,H14B,H14C), C18(H18A,H18B,H18C)
;
_shelx_res_checksum              64944
_shelx_fab_checksum              74659
_olex2_submission_special_instructions 'No special instructions were received'