Bimetallic nickel complexes containing imidazole-based phenolate ligands as efficient catalysts for the copolymerization of carbon dioxide with epoxides.
Hsu, Han-Fang; Liu, Guan-Lin; Su, Yu-Chia; Ko, Bao-Tsan; Dalton transactions (Cambridge, England : 2003) 53 (2023) 299–314; doi:10.1039/d3dt03084a

data_7714501
_publ_section_title
;
 Bimetallic nickel complexes containing imidazole-based phenolate ligands
 as efficient catalysts for the copolymerization of carbon dioxide with
 epoxides.
;
_journal_issue                   1
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              299
_journal_page_last               314
_journal_paper_doi               10.1039/d3dt03084a
_journal_volume                  53
_journal_year                    2023
_chemical_formula_moiety         'C76 H66 N6 Ni2 O7'
_chemical_formula_sum            'C76 H66 N6 Ni2 O7'
_chemical_formula_weight         1292.76
_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   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2023-07-28
_audit_creation_method
;
Olex2 1.2-ac3
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2023-09-06 deposited with the CCDC.	2023-11-17 downloaded from the CCDC.
;
_cell_angle_alpha                78.062(4)
_cell_angle_beta                 78.226(4)
_cell_angle_gamma                73.085(5)
_cell_formula_units_Z            2
_cell_length_a                   14.4235(18)
_cell_length_b                   16.341(2)
_cell_length_c                   17.149(2)
_cell_measurement_reflns_used    9864
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      26.36
_cell_measurement_theta_min      2.67
_cell_volume                     3738.5(8)
_computing_cell_refinement       'SAINT V8.40A (?, 2016)'
_computing_data_reduction        'SAINT V8.40A (?, 2016)'
_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    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      150.0
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71076
_diffrn_reflns_av_R_equivalents  0.0345
_diffrn_reflns_av_unetI/netI     0.0301
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            50724
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.000
_diffrn_reflns_theta_min         2.540
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.556
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6665
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0570 before and 0.0493 after correction.
The Ratio of minimum to maximum transmission is 0.8942.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            green
_exptl_crystal_colour_primary    green
_exptl_crystal_density_diffrn    1.148
_exptl_crystal_description       CUBE
_exptl_crystal_F_000             1352
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.33
_refine_diff_density_max         0.699
_refine_diff_density_min         -0.445
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     832
_refine_ls_number_reflns         13112
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0536
_refine_ls_R_factor_gt           0.0394
_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^)+(0.0538P)^2^+2.9704P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1022
_refine_ls_wR_factor_ref         0.1111
_reflns_Friedel_coverage         0.000
_reflns_number_gt                10612
_reflns_number_total             13112
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3dt03084a2.cif
_cod_data_source_block           hpmi_niba
_cod_depositor_comments
'Adding full bibliography for 7714500--7714509.cif.'
_cod_original_cell_volume        3738.6(9)
_cod_database_code               7714501
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.838
_shelx_estimated_absorpt_t_min   0.825
_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. Rigid bond restraints
 Ni2, O6
 with sigma for 1-2 distances of 0.001 and sigma for 1-3 distances of 0.001
 Ni2, O7
 with sigma for 1-2 distances of 0.001 and sigma for 1-3 distances of 0.001
3.a Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C8(H8A,H8B), C9(H9A,H9B), C10(H10A,H10B)
3.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C5(H5), C14(H14), C16(H16), C19(H19), C20(H20), C21(H21), C22(H22),
 C23(H23), C26(H26), C27(H27), C28(H28), C29(H29), C30(H30), C32(H32), C33(H33),
  C34(H34), C35(H35), C36(H36), C45(H45), C46(H46), C47(H47), C48(H48),
 C49(H49), C52(H52), C53(H53), C54(H54), C55(H55), C56(H56), C58(H58), C59(H59),
  C60(H60), C61(H61), C62(H62), C65(H65), C66(H66), C67(H67), C68(H68),
 C69(H69), C72(H72), C73(H73), C74(H74), C75(H75), C76(H76)
3.c Idealised Me refined as rotating group:
 C38(H38A,H38B,H38C), C39(H39A,H39B,H39C), C40(H40A,H40B,H40C), C41(H41A,H41B,
 H41C)
;
_shelx_res_checksum              90665
_shelx_fab_checksum              24130
_olex2_submission_special_instructions 'No special instructions were received'