Mono- and dimeric zinc(ii) complexes for PLA production and degradation into methyl lactate ‒ a chemical recycling method
Payne, Jack; McKeown, Paul; Mahon, Mary F.; Emanuelsson, Emma A. C.; Jones, Matthew D.; Polymer Chemistry 11 (2020) 2381–2389; doi:10.1039/D0PY00192A

data_1557412
_publ_section_title
;
 Mono- and dimeric zinc(ii) complexes for PLA production and degradation
 into methyl lactate -- a chemical recycling method
;
_journal_issue                   13
_journal_name_full               'Polymer Chemistry'
_journal_page_first              2381
_journal_page_last               2389
_journal_paper_doi               10.1039/D0PY00192A
_journal_volume                  11
_journal_year                    2020
_chemical_formula_sum            'C46 H62 N2 O2 Zn2'
_chemical_formula_weight         805.71
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2019-12-16 deposited with the CCDC.	2020-02-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.301(3)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   25.1264(8)
_cell_length_b                   18.5514(5)
_cell_length_c                   18.1043(5)
_cell_measurement_reflns_used    27495
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      73.2510
_cell_measurement_theta_min      3.4070
_cell_volume                     8438.8(4)
_computing_cell_refinement       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_molecular_graphics
'ORTEP3 for Windows - Farrugia, L. J. J. Appl. Crystallogr. 1997, 30, 565'
_computing_publication_material
;
 'WinGX publication routines, Farrugia, 
 L. J., J. Appl. Crystallogr., 1999, 32, 837-838
;
_computing_structure_refinement
;
 SHELXL-2016/6 (Sheldrick, 2016)
 Sheldrick GM (2008) Acta Crystallogr A64:112--122 and 
 C. B. H\"ubschle, G. M. Sheldrick and B. Dittrich
 ShelXle: a Qt graphical user interface for SHELXL
 J. Appl. Cryst., 44, (2011) 1281-1284.
;
_computing_structure_solution
; 
 SHELXT 
G.M.Sheldrick,Acta Crystallogr.,Sect. A: Found.Crystallogr., 2008, 64,112-122.
;
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      150.00(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 8.1150
_diffrn_detector_type            EosS2
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at home/near, EosS2'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_unetI/netI     0.0293
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.976
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            16863
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.976
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         69.317
_diffrn_reflns_theta_min         3.411
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    1.679
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.84154
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.268
_exptl_crystal_description       cube
_exptl_crystal_F_000             3424
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.759
_refine_diff_density_min         -0.906
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.101
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     966
_refine_ls_number_reflns         16863
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.101
_refine_ls_R_factor_all          0.0533
_refine_ls_R_factor_gt           0.0468
_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^)+(0.0708P)^2^+9.1085P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1285
_refine_ls_wR_factor_ref         0.1338
_reflns_Friedel_coverage         0.000
_reflns_number_gt                14946
_reflns_number_total             16863
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0py00192a2.cif
_cod_data_source_block           '[Zn(1)Et]2'
_cod_depositor_comments
;Adding full bibliography for 1557407--1557412.cif.

 Adding full bibliography for 1557407--1557412.cif.
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1557412
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.730
_shelx_estimated_absorpt_t_max   0.850
_oxdiff_exptl_absorpt_empirical_full_min 0.673
_oxdiff_exptl_absorpt_empirical_full_max 1.319
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              59655