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_7042594
_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_moiety         'C48 H80 N4 O4 Zr'
_chemical_formula_sum            'C48 H80 N4 O4 Zr'
_chemical_formula_weight         868.38
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2017-02-23 deposited with the CCDC.
2017-03-23 downloaded from the CCDC.
;
_cell_angle_alpha                76.662(2)
_cell_angle_beta                 81.066(2)
_cell_angle_gamma                71.741(2)
_cell_formula_units_Z            2
_cell_length_a                   9.7777(2)
_cell_length_b                   14.3460(3)
_cell_length_c                   19.2145(6)
_cell_measurement_reflns_used    452
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      22.5080
_cell_measurement_theta_min      3.6610
_cell_volume                     2480.42(11)
_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      150.01(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 0.994
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, EosS2'
_diffrn_measurement_method       '\w scans'
_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  0.0325
_diffrn_reflns_av_unetI/netI     0.0278
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            31337
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         73.592
_diffrn_reflns_theta_min         3.307
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    2.143
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.27970
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.43 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_description       cube
_exptl_crystal_F_000             936
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.423
_refine_diff_density_min         -0.481
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     586
_refine_ls_number_reflns         9948
_refine_ls_number_restraints     14
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0326
_refine_ls_R_factor_gt           0.0292
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0364P)^2^+0.8663P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0734
_refine_ls_wR_factor_ref         0.0752
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9152
_reflns_number_total             9948
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt00751e2.cif
_cod_data_source_block           s16mdj52
_cod_depositor_comments
'Adding full bibliography for 7042587--7042595.cif.'
_cod_database_code               7042594
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.739
_shelx_estimated_absorpt_t_max   0.814
_oxdiff_exptl_absorpt_empirical_full_min 0.501
_oxdiff_exptl_absorpt_empirical_full_max 2.011
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              13526