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_1557161
_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
'C1125 H165 Cl O11 Ti2, 2.85(C2 H3 N), 0.43(H2 O)'
_chemical_formula_sum            'C130.71 H174.42 Cl N2.85 O11.43 Ti2'
_chemical_formula_weight         2099.63
_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-2018/1
_audit_update_record
;
2019-09-19 deposited with the CCDC.	2020-01-27 downloaded from the CCDC.
;
_cell_angle_alpha                102.481(2)
_cell_angle_beta                 91.495(2)
_cell_angle_gamma                101.593(2)
_cell_formula_units_Z            2
_cell_length_a                   16.3253(4)
_cell_length_b                   17.3213(3)
_cell_length_c                   23.5069(3)
_cell_measurement_reflns_used    25377
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.0010
_cell_measurement_theta_min      1.5870
_cell_volume                     6340.9(2)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2018/1 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT-2018/2 (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'hybrid pixel detector'
_diffrn_detector_area_resol_mean 10
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_details 'Rigaku, AFC12 \k goniometer'
_diffrn_measurement_device_type
;
Rigaku FRE+ equipped with VHF Varimax confocal mirrors and an AFC12 
goniometer and HyPix 6000 detector
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0925
_diffrn_reflns_av_unetI/netI     0.0890
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            152246
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.485
_diffrn_reflns_theta_min         1.502
_diffrn_source                   'Rotating Anode'
_exptl_absorpt_coefficient_mu    0.203
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.624
_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            orange
_exptl_crystal_density_diffrn    1.100
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2262
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: acetonitrile'
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.015
_refine_diff_density_max         1.258
_refine_diff_density_min         -0.641
_refine_diff_density_rms         0.069
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1504
_refine_ls_number_reflns         29067
_refine_ls_number_restraints     481
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.1361
_refine_ls_R_factor_gt           0.0718
_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^)+(0.0970P)^2^+5.2433P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1777
_refine_ls_wR_factor_ref         0.2075
_reflns_Friedel_coverage         0.000
_reflns_number_gt                17105
_reflns_number_total             29067
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cy02571e2.cif
_cod_data_source_block           11
_cod_depositor_comments
;Adding full bibliography for 1557155--1557164.cif.

 Adding full bibliography for 1557155--1557164.cif.
;
_cod_database_code               1557161
_shelx_shelxl_version_number     2018/1
_shelx_estimated_absorpt_t_min   0.964
_shelx_estimated_absorpt_t_max   0.997
_shelx_res_checksum              71250