Sodium cubane and double-cubane aggregates of hybridised salicylaldimines and their transmetallation to nickel for catalytic ethylene oligomerisation
Xiaolu Song; Zhe Wang; Jin Zhao; T. S. Andy Hor; Chem.Commun. 49 (2013) 4992–; doi:10.1039/c3cc40320c

data_7109324
_publ_section_title
;
 Sodium cubane and double-cubane aggregates of hybridised salicylaldimines
 and their transmetallation to nickel for catalytic ethylene
 oligomerisation
;
_journal_name_full               Chem.Commun.
_journal_page_first              4992
_journal_paper_doi               10.1039/c3cc40320c
_journal_volume                  49
_journal_year                    2013
_chemical_formula_sum            'C48 H68 N8 Na4 O4'
_chemical_formula_weight         913.06
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.2549(14)
_cell_length_b                   20.2549(14)
_cell_length_c                   12.4783(9)
_cell_measurement_reflns_used    8893
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.27
_cell_measurement_theta_min      2.78
_cell_volume                     5119.4(6)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0348
_diffrn_reflns_av_sigmaI/netI    0.0180
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            25665
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    0.105
_exptl_absorpt_correction_T_max  0.9513
_exptl_absorpt_correction_T_min  0.9396
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs, (Sheldrick 2008)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.185
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1952
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.60
_exptl_crystal_size_min          0.48
_refine_diff_density_max         0.367
_refine_diff_density_min         -0.245
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     145
_refine_ls_number_reflns         2952
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0441
_refine_ls_R_factor_gt           0.0406
_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^)+(0.0528P)^2^+4.6678P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1033
_refine_ls_wR_factor_ref         0.1055
_reflns_number_gt                2685
_reflns_number_total             2952
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc40320c.txt
_cod_data_source_block           c097
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'Not Measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      I4(1)/a
_cod_database_code               7109324