An "End-On" Chromium(III)-Superoxo Complex: Crystallographic and Spectroscopic Characterization and Reactivity in C-H Bond Activation of Hydrocarbons
Jaeheung Cho; Jaeyoung Woo; Wonwoo Nam; Journal of the American Chemical Society 132 (2010) 5958–5959; doi:10.1021/ja1015926

data_4102364
_publ_contact_author_address
; Department of Chemistry and Nano Science
  Ewha Womans University
  Seoul 120-750
  Korea
;
_publ_contact_author_email       jaeheung@ewha.ac.kr
_publ_contact_author_name        'Dr. Jaeheung Cho'
_publ_section_title
;
 An "End-On" Chromium(III)-Superoxo Complex: Crystallographic and
 Spectroscopic Characterization and Reactivity in C-H Bond Activation of
 Hydrocarbons
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5958
_journal_page_last               5959
_journal_paper_doi               10.1021/ja1015926
_journal_volume                  132
_journal_year                    2010
_chemical_formula_sum            'C18 H38 Cl2 Cr N6'
_chemical_formula_weight         461.44
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'manual editing of form.cif'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   19.191(3)
_cell_length_b                   8.4088(10)
_cell_length_c                   29.802(4)
_cell_measurement_reflns_used    3088
_cell_measurement_temperature    170(2)
_cell_measurement_theta_max      21.93
_cell_measurement_theta_min      2.52
_cell_volume                     4809.2(11)
_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      170(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0738
_diffrn_reflns_av_sigmaI/netI    0.0751
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            20207
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.73
_exptl_absorpt_coefficient_mu    0.713
_exptl_absorpt_correction_T_max  0.9321
_exptl_absorpt_correction_T_min  0.8146
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.275
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             1968
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.845
_refine_diff_density_min         -0.677
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.182
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     250
_refine_ls_number_reflns         4722
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.182
_refine_ls_R_factor_all          0.1182
_refine_ls_R_factor_gt           0.0781
_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^)+(0.1000P)^2^+0.4605P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2209
_refine_ls_wR_factor_ref         0.2367
_reflns_number_gt                3152
_reflns_number_total             4722
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja1015926_si_002.cif
_cod_data_source_block           chem038
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_hydrogen_treatment' value 'Constr' changed to 'constr'
according to the built-in table from CIF Core 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_database_code               4102364