Polymer-Free Ethylene Oligomerization Using a Pyridine-Based Pincer PNP-Type of Ligand
Alzamly, Ahmed; Gambarotta, Sandro; Korobkov, Ilia; Organometallics 32 (2013) 7204–; doi:10.1021/om4008828

data_4082009
_publ_section_title
;
 Polymer-Free Ethylene Oligomerization Using a Pyridine-Based Pincer
 PNP-Type of Ligand
;
_journal_issue                   23
_journal_name_full               Organometallics
_journal_page_first              7204
_journal_paper_doi               10.1021/om4008828
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C57.5 H74 Al2 Cl3 Cr N P2'
_chemical_formula_weight         1053.43
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_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                 114.266(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.270(2)
_cell_length_b                   30.639(4)
_cell_length_c                   13.5899(17)
_cell_measurement_reflns_used    9108
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      28.56
_cell_measurement_theta_min      2.34
_cell_volume                     6935.2(15)
_computing_cell_refinement       'APEX II, Bruker (2009)'
_computing_data_collection       'APEX II, Bruker (2009)'
_computing_data_reduction        'XPREP, Bruker (2009)'
_computing_molecular_graphics    'SHELXTL, Bruker (2004)'
_computing_publication_material  'SHELXTL, Bruker (2004)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_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  0.0341
_diffrn_reflns_av_sigmaI/netI    0.0498
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       40
_diffrn_reflns_limit_k_min       -41
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            49150
_diffrn_reflns_theta_full        28.58
_diffrn_reflns_theta_max         28.58
_diffrn_reflns_theta_min         1.73
_exptl_absorpt_coefficient_mu    0.382
_exptl_absorpt_correction_T_max  0.9345
_exptl_absorpt_correction_T_min  0.9173
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker (2003)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.009
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2228
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.828
_refine_diff_density_min         -0.347
_refine_diff_density_rms         0.084
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     553
_refine_ls_number_reflns         16749
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0930
_refine_ls_R_factor_gt           0.0620
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     'calc w=1/[\s^2^(Fo^2^)+(0.1164P)^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1588
_refine_ls_wR_factor_ref         0.1800
_reflns_number_gt                12228
_reflns_number_total             16749
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om4008828_si_002.cif
_cod_data_source_block           sg287
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'n/a' 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_cell_volume        6935.2(16)
_cod_original_sg_symbol_H-M      Cc
_cod_original_formula_sum        'C57.50 H74 Al2 Cl3 Cr N P2'
_cod_database_code               4082009