Deactivation pathways of ethylene polymerization catalysts derived from titanium and zirconium 1,3-bis(furyl)-1,1,3,3-tetramethyldisilazide complexes.
Evans, Lloyd T. J.; Coles, Martyn P.; Geoffrey, F.; Cloke, N.; Hitchcock, Peter B.; Dalton transactions (Cambridge, England : 2003)  (2007) 2707–2717; doi:10.1039/b704625a

data_7005705
_publ_section_title
;
 Deactivation pathways of ethylene polymerization catalysts derived
 from titanium and zirconium
 1,3-bis(furyl)-1,1,3,3-tetramethyldisilazide complexes.
;
_journal_issue                   25
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2707
_journal_page_last               2717
_journal_paper_doi               10.1039/b704625a
_journal_year                    2007
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C28 H44 Cl6 N2 O4 Si4 Zr2, C7 H8'
_chemical_formula_sum            'C35 H52 Cl6 N2 O4 Si4 Zr2'
_chemical_formula_weight         1072.29
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_creation_date             2006-05-15T15:56:27-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                102.020(2)
_cell_angle_beta                 97.133(3)
_cell_angle_gamma                109.483(2)
_cell_formula_units_Z            1
_cell_length_a                   8.7913(3)
_cell_length_b                   10.3992(4)
_cell_length_c                   14.8782(7)
_cell_measurement_reflns_used    10909
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.022
_cell_measurement_theta_min      3.395
_cell_measurement_wavelength     0.71073
_cell_volume                     1226.24(9)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_orient_matrix_type       'by Nonius Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      -0.52561E-2
_diffrn_orient_matrix_UB_12      0.516823E-1
_diffrn_orient_matrix_UB_13      -0.49246E-1
_diffrn_orient_matrix_UB_21      0.12133
_diffrn_orient_matrix_UB_22      0.554613E-1
_diffrn_orient_matrix_UB_23      0.211062E-1
_diffrn_orient_matrix_UB_31      0.219404E-1
_diffrn_orient_matrix_UB_32      -0.738603E-1
_diffrn_orient_matrix_UB_33      -0.45492E-1
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0544
_diffrn_reflns_av_unetI/netI     0.0496
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            14725
_diffrn_reflns_theta_full        26
_diffrn_reflns_theta_max         26
_diffrn_reflns_theta_min         3.73
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.885
_exptl_absorpt_correction_T_max  0.8482
_exptl_absorpt_correction_T_min  0.7744
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.452
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             546
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.56
_refine_diff_density_min         -0.518
_refine_diff_density_rms         0.084
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     246
_refine_ls_number_reflns         4708
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.0505
_refine_ls_R_factor_gt           0.0349
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0258P)^2^+1.4432P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0723
_refine_ls_wR_factor_ref         0.0789
_reflns_number_gt                3836
_reflns_number_total             4708
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b704625a.txt
_cod_data_source_block           (3b)-may1906
_cod_database_code               7005705