Steric control of the reduction of carbodiimides by samarium(II) and the synthesis of very crowded samarium(III) complexes.
Cole, Marcus L.; Deacon, Glen B.; Forsyth, Craig M.; Junk, Peter C.; Polo Cerón, Dorian; Wang, Jun; Dalton transactions (Cambridge, England : 2003) 39 (2010) 6732–6738; doi:10.1039/b922031c

data_7024835
_publ_section_title
;
 Steric control of the reduction of carbodiimides by samarium(II) and the
 synthesis of very crowded samarium(III) complexes.
;
_journal_issue                   29
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6732
_journal_page_last               6738
_journal_paper_doi               10.1039/b922031c
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C77 H97 N6 Sm, C6 D6'
_chemical_formula_sum            'C83 H97 D6 N6 Sm'
_chemical_formula_weight         1341.10
_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                 102.565(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.6946(2)
_cell_length_b                   24.0285(4)
_cell_length_c                   24.4564(4)
_cell_measurement_reflns_used    9059
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      30.03
_cell_measurement_theta_min      2.26
_cell_volume                     7281.3(2)
_computing_cell_refinement       'Bruker Apex2 v2.0'
_computing_data_collection       'Bruker Apex2 v2.0'
_computing_data_reduction        'Bruker Apex2 v2.0'
_computing_molecular_graphics    X-Seed
_computing_publication_material  CIFTAB
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker X8 Apex CCD'
_diffrn_measurement_method       'thin slice phi and omega 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  0.0410
_diffrn_reflns_av_sigmaI/netI    0.0323
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            102410
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.90
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.853
_exptl_absorpt_correction_T_max  0.91
_exptl_absorpt_correction_T_min  0.70
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.223
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2820
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.469
_refine_diff_density_min         -4.103
_refine_diff_density_rms         0.098
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.320
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     787
_refine_ls_number_reflns         16724
_refine_ls_number_restraints     14
_refine_ls_restrained_S_all      1.323
_refine_ls_R_factor_all          0.0652
_refine_ls_R_factor_gt           0.0599
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0039P)^2^+28.1954P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1165
_refine_ls_wR_factor_ref         0.1182
_reflns_number_gt                15474
_reflns_number_total             16724
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b922031c.txt
_cod_data_source_block           mono
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7024835