cis-Fused cyclohexane promoted the chemical recycling of polycarbonate to monomer
Shan, Si-Yi; Zhang, Wei; Cao, Qing; Ye, Yun-Cong; Cai, Zhongzheng; Zhu, Jian-Bo; Polymer Chemistry 15 (2024) 1070–1076; doi:10.1039/D4PY00005F

data_1570857
_publ_section_title
;
 cis-Fused cyclohexane promoted the chemical recycling of polycarbonate to
 monomer
;
_journal_issue                   11
_journal_name_full               'Polymer Chemistry'
_journal_page_first              1070
_journal_page_last               1076
_journal_paper_doi               10.1039/D4PY00005F
_journal_volume                  15
_journal_year                    2024
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C9 H14 O3'
_chemical_formula_sum            'C9 H14 O3'
_chemical_formula_weight         170.20
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2023-10-10
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6408)
;
_audit_update_record
;
2023-10-15 deposited with the CCDC.	2024-01-31 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.3341(11)
_cell_length_b                   7.7048(16)
_cell_length_c                   20.413(4)
_cell_measurement_reflns_used    9671
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      68.487
_cell_measurement_theta_min      4.332
_cell_volume                     838.9(3)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2014/7 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      150.0
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0712
_diffrn_reflns_av_unetI/netI     0.0318
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            17245
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.606
_diffrn_reflns_theta_min         4.332
_diffrn_source_current           1.1
_diffrn_source_power             0.055
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.825
_exptl_absorpt_correction_T_max  0.7531
_exptl_absorpt_correction_T_min  0.4586
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1507 before and 0.0940 after correction.
The Ratio of minimum to maximum transmission is 0.6089.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.348
_exptl_crystal_description       block
_exptl_crystal_F_000             368
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.136
_refine_diff_density_min         -0.191
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details
;
 Flack x determined using 600 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.16(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.096
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1555
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.096
_refine_ls_R_factor_all          0.0312
_refine_ls_R_factor_gt           0.0310
_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^)+(0.0402P)^2^+0.1664P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0774
_refine_ls_wR_factor_ref         0.0775
_reflns_Friedel_coverage         0.642
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.990
_reflns_number_gt                1543
_reflns_number_total             1555
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4py00005f2.cif
_cod_data_source_block           cu_zjb__ssy_5_78_1_150k_0m_a
_cod_depositor_comments          'Adding full bibliography for 1570857.cif.'
_cod_database_code               1570857
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.833
_shelx_estimated_absorpt_t_min   0.683
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Ternary CH refined with riding coordinates:
 C3(H3), C7(H7)
2.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B), C4(H4A,H4B), C6(H6A,H6B), C8(H8A,H8B), C9(H9A,H9B)
;
_shelx_res_checksum              77375
_shelx_hkl_checksum              4050
_olex2_submission_special_instructions 'No special instructions were received'