Indenyl Functionalized N-Heterocyclic Carbene Complexes of Chromium: Syntheses, Structures, and Reactivity Studies Relevant to Ethylene Oligomerization and Polymerization
Conde-Guadano, Susana; Danopoulos, Andreas A.; Pattacini, Roberto; Hanton, Martin; Tooze, Robert P.; Organometallics 31 (2012) 1643–; doi:10.1021/om200641u

data_4076311
_publ_section_title
;
 Indenyl Functionalized N-Heterocyclic Carbene Complexes of Chromium:
 Syntheses, Structures, and Reactivity Studies Relevant to Ethylene
 Oligomerization and Polymerization
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1643
_journal_paper_doi               10.1021/om200641u
_journal_volume                  31
_journal_year                    2012
_chemical_formula_sum            'C31 H40 Cl Cr N2 O0.5'
_chemical_formula_weight         536.10
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_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            8
_cell_length_a                   22.7359(11)
_cell_length_b                   16.9398(8)
_cell_length_c                   14.8727(6)
_cell_measurement_reflns_used    323116
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     5728.1(5)
_computing_cell_refinement
;
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
;
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
;
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
;
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
;
'Bruker-Nonius 95mm CCD camera on \k-goniostat'
;
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source
;
'Bruker-Nonius FR591 rotating anode'
;
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1598
_diffrn_reflns_av_sigmaI/netI    0.0601
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            94641
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    0.516
_exptl_absorpt_correction_T_max  0.9599
_exptl_absorpt_correction_T_min  0.9038
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2006)'
_exptl_crystal_colour            'Dark Brown'
_exptl_crystal_density_diffrn    1.243
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             2280
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.285
_refine_diff_density_min         -1.095
_refine_diff_density_rms         0.119
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.103
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     315
_refine_ls_number_reflns         5048
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.109
_refine_ls_R_factor_all          0.1368
_refine_ls_R_factor_gt           0.1007
_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^)+(0.1413P)^2^+22.5445P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2645
_refine_ls_wR_factor_ref         0.2876
_reflns_number_gt                3629
_reflns_number_total             5048
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            om200641u_si_001.cif
_cod_data_source_block           complex2a-Me
_cod_original_sg_symbol_H-M      Pbcn
_cod_original_formula_sum        'C31 H40 Cl Cr N2 O0.50'
_cod_database_code               4076311