Synthesis and characterisation of unsymmetrical Zr(iv) amine tris(phenolate) complexes and their application in ROP of rac-LA.
Forder, Thomas R.; Mahon, Mary F.; Davidson, Matthew G.; Woodman, Timothy; Jones, Matthew D.; Dalton transactions (Cambridge, England : 2003) 43 (2014) 12095–12099; doi:10.1039/c4dt01260g

data_7031468
_publ_section_title
;
 Synthesis and characterisation of unsymmetrical Zr(iv) amine
 tris(phenolate) complexes and their application in ROP of rac-LA.
;
_journal_issue                   31
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              12095
_journal_page_last               12099
_journal_paper_doi               10.1039/c4dt01260g
_journal_volume                  43
_journal_year                    2014
_chemical_formula_sum            'C82 H106 N2 O8 Zr2'
_chemical_formula_weight         1430.13
_space_group_IT_number           148
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            9
_cell_length_a                   29.3650(6)
_cell_length_b                   29.3650(6)
_cell_length_c                   23.3020(6)
_cell_measurement_reflns_used    40940
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.03
_cell_measurement_theta_min      3.51
_cell_volume                     17401.4(7)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV 1997-2004)'
_computing_data_reduction        'Denzo & Scalepack (Otwinowski, Minor 1997)'
_computing_molecular_graphics    'ORTEX (P.McArdle 1995)'
_computing_publication_material  'SHELXL-97/2 (Sheldrick 1997)'
_computing_structure_refinement  'SHELXL-97/2 (Sheldrick 1997)'
_computing_structure_solution
;
 SIR97- Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C. ,
 Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R.
 (1999) J. Appl. Cryst. 32, 115-119.
;
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'nonius kappa ccd'
_diffrn_measurement_method       ccd
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1093
_diffrn_reflns_av_sigmaI/netI    0.0459
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            59569
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         5.43
_exptl_absorpt_coefficient_mu    0.323
_exptl_absorpt_correction_T_max  0.9840
_exptl_absorpt_correction_T_min  0.9684
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'multi-scan Sortav (Blessing 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.228
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             6804
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.369
_refine_diff_density_min         -0.631
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.124
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     461
_refine_ls_number_reflns         6767
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.124
_refine_ls_R_factor_all          0.0938
_refine_ls_R_factor_gt           0.0572
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0822P)^2^+76.0788P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1503
_refine_ls_wR_factor_ref         0.1859
_reflns_number_gt                4751
_reflns_number_total             6767
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4dt01260g2.cif
_cod_data_source_block           Zr2(2)(OiPr)2
_cod_depositor_comments
'Adding full bibliography for 7031467--7031468.cif.'
_cod_original_sg_symbol_H-M      R-3
_cod_database_code               7031468