Isolation of (CO)1- and (CO2)1-Radical Complexes of Rare Earths via Ln(NR2)3/K Reduction and [K2(18-crown-6)2]2+ Oligomerization
Ming Fang; Joy H. Farnaby; Joseph W. Ziller; Jefferson E. Bates; Filipp Furche; William J. Evans; Journal of the American Chemical Society 134 (2012) 6064–6067; doi:10.1021/ja211220r

data_4117775
_publ_section_title
;
 Isolation of (CO)1- and (CO2)1-Radical Complexes of Rare Earths via
 Ln(NR2)3/K Reduction and [K2(18-crown-6)2]2+ Oligomerization
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6064
_journal_page_last               6067
_journal_paper_doi               10.1021/ja211220r
_journal_volume                  134
_journal_year                    2012
_chemical_formula_sum            'C38 H85 K N3 O7 Si6 Y'
_chemical_formula_weight         992.64
_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           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.499(2)
_cell_length_b                   19.7847(18)
_cell_length_c                   26.014(2)
_cell_measurement_reflns_used    9838
_cell_measurement_temperature    88(2)
_cell_measurement_theta_max      25.38
_cell_measurement_theta_min      2.16
_cell_volume                     11065.1(17)
_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      88(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  0.0551
_diffrn_reflns_av_sigmaI/netI    0.0305
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            65976
_diffrn_reflns_theta_full        23.25
_diffrn_reflns_theta_max         23.25
_diffrn_reflns_theta_min         2.06
_exptl_absorpt_coefficient_mu    1.300
_exptl_absorpt_correction_T_max  0.6795
_exptl_absorpt_correction_T_min  0.5518
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.192
_exptl_crystal_density_meas      ?
_exptl_crystal_description       irregular
_exptl_crystal_F_000             4256
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.47
_exptl_crystal_size_min          0.32
_refine_diff_density_max         3.084
_refine_diff_density_min         -0.685
_refine_diff_density_rms         0.103
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     524
_refine_ls_number_reflns         7929
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0795
_refine_ls_R_factor_gt           0.0654
_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^)+(0.0902P)^2^+56.2616P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1699
_refine_ls_wR_factor_ref         0.1819
_reflns_number_gt                6569
_reflns_number_total             7929
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja211220r_si_005.cif
_cod_data_source_block           mf94
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' 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        11065.0(18)
_cod_database_code               4117775