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_7705075
_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            'C14 H17 N3 O5'
_chemical_formula_weight         307.30
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   mixed
_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                   16.0485(5)
_cell_length_b                   8.2154(2)
_cell_length_c                   22.2672(6)
_cell_measurement_reflns_used    2856
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.62
_cell_measurement_theta_min      1.85
_cell_volume                     2935.82(14)
_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      296(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.994
_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  0.0620
_diffrn_reflns_av_unetI/netI     0.0702
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            14549
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.998
_diffrn_reflns_theta_min         2.226
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6444
_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    1.391
_exptl_crystal_description       block
_exptl_crystal_F_000             1296
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.766
_refine_diff_density_min         -0.389
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         2865
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.1417
_refine_ls_R_factor_gt           0.0793
_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^)+(0.1126P)^2^+0.7322P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1896
_refine_ls_wR_factor_ref         0.2090
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1715
_reflns_number_total             2865
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0dt00185f2.cif
_cod_data_source_block           HL2
_cod_depositor_comments
'Adding full bibliography for 7705072--7705075.cif.'
_cod_database_code               7705075
_shelx_estimated_absorpt_t_min   0.958
_shelx_estimated_absorpt_t_max   0.979
_shelxl_version_number           2013-2
_shelx_res_checksum              84170