Novel Ti(iv) and Zr(iv) complexes and their application in the ring-opening polymerisation of cyclic esters
Whitelaw, Emma L.; Jones, Matthew D.; Mahon, Mary F.; Kociok-Kohn, Gabriele; Dalton Transactions  (2009) 9020–9025; doi:10.1039/b911545e

data_7002524
_publ_section_title
;
 Novel Ti(iv) and Zr(iv) complexes and their application in the
 ring-opening polymerisation of cyclic esters
;
_journal_issue                   41
_journal_name_full               'Dalton Transactions'
_journal_page_first              9020
_journal_page_last               9025
_journal_paper_doi               10.1039/b911545e
_journal_year                    2009
_chemical_formula_sum            'C93 H136 N2 O8 Zr2'
_chemical_formula_weight         1592.48
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                103.5680(10)
_cell_angle_beta                 101.1950(10)
_cell_angle_gamma                96.8930(10)
_cell_formula_units_Z            1
_cell_length_a                   11.3349(3)
_cell_length_b                   13.6262(3)
_cell_length_c                   15.5329(4)
_cell_measurement_reflns_used    9114
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      24.11
_cell_measurement_theta_min      3.51
_cell_volume                     2253.01(10)
_computing_cell_refinement       'HKL Scalepack (Otwinski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
;
DENZO-SCALEPACK Z. Otwinowski and W. Minor, "
Processing of X-ray Diffraction Data Collected in Oscillation Mode ",
Methods in Enzymology, Volume 276: Macromolecular Crystallography,
part A, p.307-326, 1997,C.W. Carter, Jr. & R. M. Sweet, Eds., Academic Press.
;
_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
;
SHELXL97 -Program for Crystal Structure Analysis (Release 97-2).
Sheldrick, G.M., Instit\"ut f\"ur Anorganische Chemie der Universit\"at,
Tammanstrasse 4, D-3400 G\"ottingen, Germany, 1998
;
_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 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       '120 2.0 degree images with \w scan'
_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  0.0442
_diffrn_reflns_av_sigmaI/netI    0.0627
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            16004
_diffrn_reflns_theta_full        24.03
_diffrn_reflns_theta_max         24.03
_diffrn_reflns_theta_min         3.52
_exptl_absorpt_coefficient_mu    0.284
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.174
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             852
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.339
_refine_diff_density_min         -0.399
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     505
_refine_ls_number_reflns         6964
_refine_ls_number_restraints     17
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0556
_refine_ls_R_factor_gt           0.0401
_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^)+(0.0300P)^2^+1.4611P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0892
_refine_ls_wR_factor_ref         0.0971
_reflns_number_gt                5763
_reflns_number_total             6964
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b911545e.txt
_cod_data_source_block           Zr(2)(OiPr)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7002524