Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization
Liu, Zhizhou; Gao, Wei; Liu, Xiaoming; Luo, Xuyang; Cui, Dongmei; Mu, Ying; Organometallics 30 (2011) 752–; doi:10.1021/om1009236

data_4063766
_publ_section_title
;
 Pincer Chromium(II) and Chromium(III) Complexes Supported by
 Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene
 Polymerization
;
_journal_issue                   4
_journal_name_full               Organometallics
_journal_page_first              752
_journal_paper_doi               10.1021/om1009236
_journal_volume                  30
_journal_year                    2011
_chemical_formula_sum            'C32 H39 Cl2 Cr N2 O'
_chemical_formula_weight         590.55
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 92.74(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   18.866(4)
_cell_length_b                   10.216(2)
_cell_length_c                   31.635(6)
_cell_measurement_temperature    293(2)
_cell_volume                     6090(2)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean '100x100 microns'
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID IP diffractometer'
_diffrn_measurement_method       'Oscillation 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  0.0760
_diffrn_reflns_av_sigmaI/netI    0.0690
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       41
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            51424
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.01
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    0.578
_exptl_absorpt_correction_T_max  0.9445
_exptl_absorpt_correction_T_min  0.9286
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.288
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2488
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.506
_refine_diff_density_min         -0.375
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     694
_refine_ls_number_reflns         13762
_refine_ls_number_restraints     24
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.1141
_refine_ls_R_factor_gt           0.0583
_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^)+(0.0520P)^2^+2.7380P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1181
_refine_ls_wR_factor_ref         0.1380
_reflns_number_gt                8134
_reflns_number_total             13762
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om1009236_si_001.cif
_cod_data_source_block           complex_2b
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4063766