Thorium Triamidoamine Complexes: Synthesis of an Unusual Dinuclear Tuck-in‒Tuck-over Thorium Metallacycle Featuring the Longest Known Thorium−σ-Alkyl Bond
Gardner, Benedict M.; Lewis, William; Blake, Alexander J.; Liddle, Stephen T.; Organometallics 34 (2015) 2386–; doi:10.1021/om501177s

data_4085419
_publ_section_title
;
 Thorium Triamidoamine Complexes: Synthesis of an Unusual Dinuclear
 Tuck-in--Tuck-over Thorium Metallacycle Featuring the Longest Known
 Thorium&#x2212;\s-Alkyl Bond
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              2386
_journal_paper_doi               10.1021/om501177s
_journal_volume                  34
_journal_year                    2015
_chemical_formula_moiety         'C28 H63 N6 Si3 U, C24 H20 B, C7 H8'
_chemical_formula_sum            'C59 H91 B N6 Si3 U'
_chemical_formula_weight         1217.48
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2014-11-14
_audit_creation_method
;
Olex2 1.2
(compiled 2014.09.19 svn.r3010 for OlexSys, GUI svn.r4874)
;
_cell_angle_alpha                90
_cell_angle_beta                 128.242(5)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   27.557(8)
_cell_length_b                   25.947(8)
_cell_length_c                   21.479(6)
_cell_measurement_reflns_used    7063
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      27.43
_cell_measurement_theta_min      2.16
_cell_volume                     12062(6)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area detector'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0564
_diffrn_reflns_av_unetI/netI     0.0800
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -35
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            37344
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.548
_diffrn_reflns_theta_min         1.980
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    2.792
_exptl_absorpt_correction_T_max  0.4305
_exptl_absorpt_correction_T_min  0.3526
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2007/2 (Bruker,2007) was used for absorption correction.
wR2(int) was 0.0702 before and 0.0539 after correction.
The Ratio of minimum to maximum transmission is 0.8190.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            'clear green'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    green
_exptl_crystal_density_diffrn    1.341
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       column
_exptl_crystal_F_000             5008
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         2.052
_refine_diff_density_min         -1.302
_refine_diff_density_rms         0.133
_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     625
_refine_ls_number_reflns         13761
_refine_ls_number_restraints     602
_refine_ls_restrained_S_all      1.163
_refine_ls_R_factor_all          0.1006
_refine_ls_R_factor_gt           0.0753
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0555P)^2^+46.6730P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1567
_refine_ls_wR_factor_ref         0.1675
_reflns_Friedel_coverage         0.000
_reflns_number_gt                10555
_reflns_number_total             13761
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            om501177s_si_001.cif
_cod_data_source_block           5
_cod_depositor_comments
'Adding full bibliography for 4085415--4085420.cif.'
_cod_database_code               4085419
_nottingham_internal_coll_name   UBMGMW
_nottingham_internal_coll_number 11948
_nottingham_internal_coll_client BMG/STL
_nottingham_internal_coll_type   hemisphere
_nottingham_internal_coll_frame_method \w
_nottingham_internal_coll_frame_time 60
_nottingham_internal_coll_frame_width 0.3
_nottingham_internal_coll_user   BMG
_nottingham_internal_coll_date   26/10/2012
_nottingham_internal_coll_location NOTTS
_nottingham_internal_process_date 26/10/2012
_nottingham_internal_process_user BMG/WL
_nottingham_internal_solution_date 26/10/2012
_nottingham_internal_solution_user BMG/WL
_nottingham_internal_refinement_date 10/11/2014
_nottingham_internal_refinement_user BMG/WL
_nottingham_internal_validation_date 14/11/2014
_nottingham_internal_validation_user pczwl
_nottingham_internal_archive_date 14/11/2014
_platon_squeeze_void_probe_radius 1.20
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained distances
 H21A-H18B
 -2 with sigma of 0.02
 H21B-H18B
 -2 with sigma of 0.02
 Si3-C19A \\sim Si3-C19
 with sigma of 0.02
 C19-C21 \\sim C19-C21A \\sim C20-C19 \\sim C20A-C19 \\sim C19-C22 \\sim
C19-C22A
 with sigma of 0.02
3. Rigid body (RIGU) restrains
 All non-hydrogen atoms
 with sigma for 1-2 distances of 0.004 and sigma for 1-3 distances of 0.004
4. Others
 Sof(C19A)=Sof(C20A)=Sof(H20D)=Sof(H20E)=Sof(H20F)=Sof(C21A)=Sof(H21D)=
 Sof(H21E)=Sof(H21F)=Sof(C22A)=Sof(H22D)=Sof(H22E)=Sof(H22F)=1-FVAR(1)
 Sof(C19)=Sof(C20)=Sof(H20A)=Sof(H20B)=Sof(H20C)=Sof(C21)=Sof(H21A)=Sof(H21B)=
 Sof(H21C)=Sof(C22)=Sof(H22A)=Sof(H22B)=Sof(H22C)=FVAR(1)
5.a Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C8(H8A,H8B), C15(H15A,H15B), C16(H16A,H16B), C23(H23A,H23B),
 C24(H24A,H24B)
5.b Aromatic/amide H refined with riding coordinates:
 C30(H30), C31(H31), C32(H32), C33(H33), C34(H34), C36(H36), C37(H37),
 C38(H38), C39(H39), C40(H40), C42(H42), C43(H43), C44(H44), C45(H45), C46(H46),
  C48(H48), C49(H49), C50(H50), C51(H51), C52(H52)
5.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C2(H2A,H2B,H2C), C4(H4A,H4B,H4C), C5(H5A,H5B,H5C), C6(H6A,
 H6B,H6C), C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C12(H12A,H12B,H12C), C13(H13A,
 H13B,H13C), C14(H14A,H14B,H14C), C17(H17A,H17B,H17C), C18(H18A,H18B,H18C),
 C20(H20A,H20B,H20C), C20A(H20D,H20E,H20F), C21(H21A,H21B,H21C), C21A(H21D,H21E,
 H21F), C22(H22A,H22B,H22C), C22A(H22D,H22E,H22F), C26(H26A,H26B,H26C),
 C28(H28A,H28B,H28C)
;
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'