Zinc complexes supported by pyridine-<i>N</i>-oxide ligands: synthesis, structures and catalytic Michael addition reactions.
Mo, Xiu-Fang; Xiong, Chang-Feng; Chen, Ze-Wen; Liu, Chao; He, Piao; Tong, Hai-Xia; Yi, Xiao-Yi; Dalton transactions (Cambridge, England : 2003) 49 (2020) 12365–12371; doi:10.1039/d0dt00185f

data_7705073
_publ_section_title
;
 Zinc complexes supported by pyridine-<i>N</i>-oxide ligands: synthesis,
 structures and catalytic Michael addition reactions.
;
_journal_issue                   35
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              12365
_journal_page_last               12371
_journal_paper_doi               10.1039/d0dt00185f
_journal_volume                  49
_journal_year                    2020
_chemical_formula_sum            'C32 H28 Cl8 N6 O4 Zn'
_chemical_formula_weight         909.57
_space_group_crystal_system      orthorhombic
_space_group_IT_number           70
_space_group_name_Hall           '-F 2uv 2vw'
_space_group_name_H-M_alt        'F d d d :2'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2020-06-23 deposited with the CCDC.	2020-08-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   12.8301(9)
_cell_length_b                   16.4771(11)
_cell_length_c                   37.538(3)
_cell_measurement_reflns_used    2856
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.56
_cell_measurement_theta_min      1.82
_cell_volume                     7935.6(10)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1023
_diffrn_reflns_av_unetI/netI     0.0657
_diffrn_reflns_Laue_measured_fraction_full 0.971
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       44
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            14968
_diffrn_reflns_point_group_measured_fraction_full 0.971
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         24.992
_diffrn_reflns_theta_min         2.084
_exptl_absorpt_coefficient_mu    1.201
_exptl_absorpt_correction_T_max  0.7453
_exptl_absorpt_correction_T_min  0.6073
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2008/1 - Bruker AXS was used for absorption correction. wR2(int) was 0.0672 before and 0.0527 after correction. The Ratio of minimum to maximum transmission is 0.8148. The  Lambda/2 correction factor is 0.0015.'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.523
_exptl_crystal_description       block
_exptl_crystal_F_000             3680
_exptl_crystal_size_max          0.8
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.480
_refine_diff_density_min         -0.527
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.147
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         1757
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.162
_refine_ls_R_factor_all          0.1575
_refine_ls_R_factor_gt           0.0783
_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^)+(0.1000P)^2^]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1904
_refine_ls_wR_factor_ref         0.2155
_reflns_Friedel_coverage         0.000
_reflns_number_gt                899
_reflns_number_total             1757
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0dt00185f2.cif
_cod_data_source_block           Zn(L2)2
_cod_depositor_comments
'Adding full bibliography for 7705072--7705075.cif.'
_cod_original_sg_symbol_H-M      'F d d d'
_cod_database_code               7705073
_shelxl_version_number           2013-2
_shelx_res_checksum              56565