Ligands and complexes based on piperidine and their exploitation of the ring opening polymerisation of rac-lactide.
McKeown, Paul; Brown-Humes, James; Davidson, Matthew G.; Mahon, Mary F.; Woodman, Timothy J.; Jones, Matthew D.; Dalton transactions (Cambridge, England : 2003) 46 (2017) 5048–5057; doi:10.1039/c7dt00751e

data_7042587
_publ_section_title
;
 Ligands and complexes based on piperidine and their exploitation of the
 ring opening polymerisation of rac-lactide.
;
_journal_issue                   15
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5048
_journal_page_last               5057
_journal_paper_doi               10.1039/c7dt00751e
_journal_volume                  46
_journal_year                    2017
_chemical_formula_sum            'C42 H68 N2 O4 Ti'
_chemical_formula_weight         712.88
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-I 2ya'
_space_group_name_H-M_alt        'I 1 2/a 1'
_symmetry_space_group_name_Hall  '-I 2ya'
_symmetry_space_group_name_H-M   'I 1 2/a 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-02-23 deposited with the CCDC.
2017-03-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 113.744(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   23.0224(3)
_cell_length_b                   14.30120(10)
_cell_length_c                   28.4630(4)
_cell_measurement_reflns_used    16685
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      71.8850
_cell_measurement_theta_min      4.9310
_cell_volume                     8578.1(2)
_computing_cell_refinement       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.43 (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-2014/8 (Sheldrick, 2014)
 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
 Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
;
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      150.0(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 8.1150
_diffrn_detector_type            EosS2
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, EosS2'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0351
_diffrn_reflns_av_unetI/netI     0.0289
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            34998
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         72.065
_diffrn_reflns_theta_min         4.444
_diffrn_source                   'sealed X-ray tube'
_diffrn_source_type              'SuperNova (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    1.985
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.104
_exptl_crystal_description       block
_exptl_crystal_F_000             3104
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.150
_exptl_transmission_factor_max   0.755
_exptl_transmission_factor_min   0.692
_refine_diff_density_max         0.695
_refine_diff_density_min         -0.481
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     473
_refine_ls_number_reflns         8360
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0458
_refine_ls_R_factor_gt           0.0412
_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^)+(0.0596P)^2^+7.6708P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1099
_refine_ls_wR_factor_ref         0.1137
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7530
_reflns_number_total             8360
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt00751e2.cif
_cod_data_source_block           S15MDJ30
_cod_depositor_comments
'Adding full bibliography for 7042587--7042595.cif.'
_cod_database_code               7042587
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.692
_shelx_estimated_absorpt_t_max   0.755
_shelx_res_checksum              27649