Angular Distortions at Benzylic Carbons Due to Intramolecular Polarization-Induced Metal‒Arene Interactions: A Case Study with Open-Shell Chromium(II) NHC Complexes
Danopoulos, Andreas A.; Monakhov, Kirill Yu.; Robert, Vincent; Braunstein, Pierre; Pattacini, Roberto; Conde-Guadaño, Susana; Hanton, Martin; Tooze, Robert P.; Organometallics 32 (2013) 1842–; doi:10.1021/om3012568

data_4080440
_publ_section_title
;
 Angular Distortions at Benzylic Carbons Due to Intramolecular
 Polarization-Induced Metal--Arene Interactions: A Case Study with
 Open-Shell Chromium(II) NHC Complexes
;
_journal_issue                   6
_journal_name_full               Organometallics
_journal_page_first              1842
_journal_paper_doi               10.1021/om3012568
_journal_volume                  32
_journal_year                    2013
_chemical_formula_moiety         'C41 H50 Cr N2'
_chemical_formula_sum            'C41 H50 Cr N2'
_chemical_formula_weight         622.83
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                   23.7036(13)
_cell_length_b                   12.0562(7)
_cell_length_c                   12.2266(6)
_cell_measurement_reflns_used    4211
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.92
_cell_measurement_theta_min      2.41
_cell_volume                     3494.1(3)
_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      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.0799
_diffrn_reflns_av_sigmaI/netI    0.1177
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            23105
_diffrn_reflns_theta_full        30.81
_diffrn_reflns_theta_max         30.81
_diffrn_reflns_theta_min         1.90
_exptl_absorpt_coefficient_mu    0.357
_exptl_absorpt_correction_T_max  0.9651
_exptl_absorpt_correction_T_min  0.8702
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.184
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1336
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.456
_refine_diff_density_min         -0.629
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     405
_refine_ls_number_reflns         8959
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.1367
_refine_ls_R_factor_gt           0.0543
_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^)+(0.0357P)^2^+0.7388P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0914
_refine_ls_wR_factor_ref         0.1194
_reflns_number_gt                4795
_reflns_number_total             8959
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om3012568_si_003.cif
_cod_data_source_block           complex3
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_database_code               4080440