Group 4 catalysts for ethene polymerization containing tetradentate salicylaldiminato ligands.
Clarkson, Guy J.; Gibson, Vernon C.; Goh, Peter K. Y.; Hammond, Max L.; Knight, Paul D.; Scott, Peter; Smit, Theo M.; White, Andrew J. P.; Williams, David J.; Dalton transactions (Cambridge, England : 2003)  (2006) 5484–5491; doi:10.1039/b610555f

data_7007798
_publ_section_title
;
 Group 4 catalysts for ethene polymerization containing tetradentate
 salicylaldiminato ligands.
;
_journal_issue                   46
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5484
_journal_page_last               5491
_journal_paper_doi               10.1039/b610555f
_journal_year                    2006
_chemical_formula_sum            'C46 H57 Cl2 N3 O2 Zr'
_chemical_formula_weight         846.07
_chemical_name_systematic
;
?
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   25.981(4)
_cell_length_b                   13.1764(4)
_cell_length_c                   26.4518(14)
_cell_measurement_reflns_used    23
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.00
_cell_measurement_theta_min      10.80
_cell_volume                     9055.4(15)
_computing_cell_refinement       'Siemens XSCANS'
_computing_data_collection       'Siemens XSCANS'
_computing_data_reduction        'Siemens SHELXTL'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Siemens P4'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0458
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            6721
_diffrn_reflns_theta_max         60.00
_diffrn_reflns_theta_min         3.34
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    3.364
_exptl_absorpt_correction_T_max  0.3817
_exptl_absorpt_correction_T_min  0.2918
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details
;
SHELXTL, Bruker AXS Ltd.,
Version 5.03 (release 1994)
Semi-empirical absorption correction using psi-scans
implemented in the XPREP program.
;
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.241
_exptl_crystal_description       prisms
_exptl_crystal_F_000             3552
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.325
_refine_diff_density_min         -0.462
_refine_diff_density_rms         0.057
_refine_ls_extinction_coef       0.00030(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_all   1.032
_refine_ls_goodness_of_fit_obs   1.080
_refine_ls_matrix_type           full
_refine_ls_number_parameters     488
_refine_ls_number_reflns         6282
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_restrained_S_obs      1.080
_refine_ls_R_factor_all          0.0599
_refine_ls_R_factor_obs          0.0414
_refine_ls_shift/esd_max         0.000
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0520P)^2^+1.5059P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1056
_refine_ls_wR_factor_obs         0.0946
_reflns_number_observed          5185
_reflns_number_total             6721
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            b610555f.txt
_cod_data_source_block           VG0106
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0520P)^2^+1.5059P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0520P)^2^+1.5059P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        9055.6(15)
_cod_original_sg_symbol_H-M      Pbca
_cod_original_formula_sum        'C46 H57 N3 O2 Cl2 Zr'
_cod_database_code               7007798