Synthesis, structure and ethylene polymerisation behaviour of vanadium(iv and v) complexes bearing chelating aryloxides
Homden, Damien; Redshaw, Carl; Warford, Lee; Hughes, David L.; Wright, Joseph A.; Dale, Sophie H.; Elsegood, Mark R. J.; Dalton Transactions  (2009) 8900–8910; doi:10.1039/b901810g

data_7002600
_publ_section_title
;
 Synthesis, structure and ethylene polymerisation behaviour of
 vanadium(iv and v) complexes bearing chelating aryloxides
;
_journal_issue                   41
_journal_name_full               'Dalton Transactions'
_journal_page_first              8900
_journal_page_last               8910
_journal_paper_doi               10.1039/b901810g
_journal_year                    2009
_chemical_formula_moiety         'C80 H110 O8 V2, 3(C2 H3 N)'
_chemical_formula_structural     '[{VO(tBu-(C6H2-tBu,O-CH2-)3-tBu)}2].3(MeCN)'
_chemical_formula_sum            'C86 H119 N3 O8 V2'
_chemical_formula_weight         1424.72
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 93.323(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.5098(8)
_cell_length_b                   19.2536(11)
_cell_length_c                   28.7880(17)
_cell_measurement_reflns_used    52327
_cell_measurement_temperature    180(1)
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      3.69
_cell_volume                     8582.2(8)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd., Version 1.171.27p20 beta
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd., Version 1.171.27p20 beta
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd., Version 1.171.27p20 beta
;
_computing_molecular_graphics    'CAMERON (Watkin <i>et al</i>, 1993)'
_computing_publication_material
;
SHELXL-97 (Sheldrick, 2008), PLATON (Spek, 2003), WinGX (Farrugia, 1999)
and enCIFer (Allen <i>et al.</i>, 2004)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      180(1)
_diffrn_detector_area_resol_mean 16.0050
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur 3/CCD'
_diffrn_measurement_method       'Thin slice \f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           Mo-K\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0500
_diffrn_reflns_av_sigmaI/netI    0.0407
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            52327
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.69
_exptl_absorpt_coefficient_mu    0.269
_exptl_absorpt_correction_T_max  0.879
_exptl_absorpt_correction_T_min  0.766
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS V2.10; Sheldrick, 2003)'
_exptl_crystal_colour            'very dark'
_exptl_crystal_density_diffrn    1.103
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3064
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.51
_exptl_crystal_size_min          0.48
_refine_diff_density_max         0.615
_refine_diff_density_min         -0.434
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     460
_refine_ls_number_reflns         9782
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0957
_refine_ls_R_factor_gt           0.0627
_refine_ls_shift/su_max          0.017
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0802P)^2^+10.1069P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1495
_refine_ls_wR_factor_ref         0.1634
_reflns_number_gt                7118
_reflns_number_total             9782
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            b901810g.txt
_cod_data_source_block           8
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7002600