Use of titanocalix[4]arenes in the ring opening polymerization of cyclic esters
Sun, Ziyue; Zhao, Yanxia; Santoro, Orlando; Elsegood, Mark R. J.; Bedwell, Elizabeth V.; Zahra, Khadisha; Walton, Alex; Redshaw, Carl; Catalysis Science & Technology 10 (2020) 1619–1639; doi:10.1039/C9CY02571E

data_1557158
_publ_section_title
;
 Use of titanocalix[4]arenes in the ring opening polymerization of cyclic
 esters
;
_journal_issue                   6
_journal_name_full               'Catalysis Science &amp; Technology'
_journal_page_first              1619
_journal_page_last               1639
_journal_paper_doi               10.1039/C9CY02571E
_journal_volume                  10
_journal_year                    2020
_chemical_formula_moiety         'C108 H147 Cl O9 Ti2, 8.5(C2 H3 N)'
_chemical_formula_sum            'C125 H172.5 Cl N8.5 O9 Ti2'
_chemical_formula_weight         2069.45
_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     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2019-09-19 deposited with the CCDC.	2020-01-27 downloaded from the CCDC.
;
_cell_angle_alpha                100.630(2)
_cell_angle_beta                 93.526(3)
_cell_angle_gamma                104.426(3)
_cell_formula_units_Z            2
_cell_length_a                   17.4371(7)
_cell_length_b                   17.7765(4)
_cell_length_c                   21.1345(4)
_cell_measurement_reflns_used    15469
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      66.34
_cell_measurement_theta_min      3.03
_cell_volume                     6195.8(3)
_computing_cell_refinement       'CrysAlisPro 1.171.40.18b (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.40.18b (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.40.18b (Rigaku OD, 2018)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type
; 
Rigaku 007HF equipped with Varimax confocal mirrors and an AFC11 
goniometer and HyPix 6000 detector 
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_collimation    0.3
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.1311
_diffrn_reflns_av_unetI/netI     0.0920
_diffrn_reflns_Laue_measured_fraction_full 0.991
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            103194
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        66.596
_diffrn_reflns_theta_max         66.596
_diffrn_reflns_theta_min         2.633
_diffrn_source                   'Rotating anode'
_exptl_absorpt_coefficient_mu    1.730
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.720
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro 1.171.40.18b (Rigaku Oxford Diffraction, 2018) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.109
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2230
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: acetonitrile'
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.030
_refine_diff_density_max         1.098
_refine_diff_density_min         -0.547
_refine_diff_density_rms         0.097
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1474
_refine_ls_number_reflns         21695
_refine_ls_number_restraints     1059
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.1417
_refine_ls_R_factor_gt           0.0986
_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^)+(0.1759P)^2^+2.1383P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2587
_refine_ls_wR_factor_ref         0.2928
_reflns_Friedel_coverage         0.000
_reflns_number_gt                13736
_reflns_number_total             21695
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cy02571e2.cif
_cod_data_source_block           10
_cod_depositor_comments
;Adding full bibliography for 1557155--1557164.cif.

 Adding full bibliography for 1557155--1557164.cif.
;
_cod_original_formula_sum        'C125 H172.50 Cl N8.50 O9 Ti2'
_cod_database_code               1557158
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.781
_shelx_estimated_absorpt_t_max   0.950
_shelx_res_checksum              91768