1,2-Addition and cycloaddition reactions of niobium bis(imido) and oxo imido complexes
Fostvedt, Jade I.; Grant, Lauren N.; Kriegel, Benjamin M.; Obenhuber, Andreas H.; Lohrey, Trevor D.; Bergman, Robert G.; Arnold, John; Chemical Science  (2020) –; doi:10.1039/D0SC03489D

data_1559327
_publ_section_title
;
 1,2-Addition and cycloaddition reactions of niobium bis(imido) and oxo
 imido complexes
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D0SC03489D
_journal_year                    2020
_chemical_formula_moiety         'C56 H75 N4 Nb S'
_chemical_formula_sum            'C56 H75 N4 Nb S'
_chemical_formula_weight         929.17
_chemical_melting_point          442
_chemical_name_common            (\k1-BDI)Nb(NtBu)(NHtBu)(SCPh3)
_chemical_name_systematic
(tert-butyl)amino-(tert-butyl)imino-(triphenylmethylthiolato)-(N-(4-((2,6-diisopropylphenyl)imino)pent-2-en-2-yl)-2,6-diisopropylanilido)-niobium(V)
_chemical_properties_physical
Air-sensitive,Moisture-sensitive,Oxygen-sensitive
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2020-05-17
_audit_creation_method
;
Olex2 1.2
(compiled May 18 2018 14:05:52 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2020-05-17 deposited with the CCDC.	2020-10-08 downloaded from the CCDC.
;
_cell_angle_alpha                101.7150(10)
_cell_angle_beta                 96.702(2)
_cell_angle_gamma                90.848(2)
_cell_formula_units_Z            2
_cell_length_a                   13.4066(4)
_cell_length_b                   13.5108(4)
_cell_length_c                   14.4569(4)
_cell_measurement_reflns_used    9876
_cell_measurement_temperature    100
_cell_measurement_theta_max      25.40
_cell_measurement_theta_min      2.91
_cell_volume                     2544.57(13)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0478
_diffrn_reflns_av_unetI/netI     0.0353
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            57967
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.426
_diffrn_reflns_theta_min         1.449
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.317
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.7047
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014) was used for absorption correction.
wR2(int) was 0.0897 before and 0.0529 after correction.
The Ratio of minimum to maximum transmission is 0.9457.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.213
_exptl_crystal_description       block
_exptl_crystal_F_000             992
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Hexamethyldisiloxane'
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.471
_refine_diff_density_min         -0.367
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     575
_refine_ls_number_reflns         9328
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0416
_refine_ls_R_factor_gt           0.0329
_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^)+(0.0289P)^2^+2.0561P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0753
_refine_ls_wR_factor_ref         0.0799
_reflns_Friedel_coverage         0.000
_reflns_number_gt                8059
_reflns_number_total             9328
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0sc03489d2.cif
_cod_data_source_block           bmkxr44
_cod_database_code               1559327
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.984
_shelx_estimated_absorpt_t_min   0.975
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C12(H12), C15(H15), C24(H24), C27(H27)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C8(H8), C9(H9), C10(H10), C20(H20), C21(H21), C22(H22), C40(H40),
 C41(H41), C42(H42), C43(H43), C44(H44), C46(H46), C47(H47), C48(H48), C49(H49),
  C50(H50), C52(H52), C53(H53), C54(H54), C55(H55), C56(H56), N4(H4)
2.c Idealised Me refined as rotating group:
 C4(H4A,H4B,H4C), C5(H5A,H5B,H5C), C13(H13A,H13B,H13C), C14(H14A,H14B,H14C),
 C16(H16A,H16B,H16C), C17(H17A,H17B,H17C), C25(H25A,H25B,H25C), C26(H26A,H26B,
 H26C), C28(H28A,H28B,H28C), C29(H29A,H29B,H29C), C31(H31A,H31B,H31C), C32(H32A,
 H32B,H32C), C33(H33A,H33B,H33C), C35(H35A,H35B,H35C), C36(H36A,H36B,H36C),
 C37(H37A,H37B,H37C)
;
_olex2_submission_special_instructions 'No special instructions were received'