Triple bonds of niobium with silicon, germaniun and tin: the tetrylidyne complexes [(κ3-tmps)(CO)2NbE‒R] (E = Si, Ge, Sn; tmps = MeSi(CH2PMe2)3; R = aryl)
Filippou, Alexander C.; Hoffmann, David; Schnakenburg, Gregor; Chem. Sci.  (2017) –; doi:10.1039/C7SC02708G

data_1546540
_publ_section_title
;
 Triple bonds of niobium with silicon, germaniun and tin: the tetrylidyne
 complexes [(\k3-tmps)(CO)2Nb&#xE002;E--R] (E = Si, Ge, Sn; tmps =
 MeSi(CH2PMe2)3; R = aryl)
;
_journal_name_full               'Chem. Sci.'
_journal_paper_doi               10.1039/C7SC02708G
_journal_year                    2017
_chemical_formula_moiety         'C36 H76 Nb O2 P3 Si6'
_chemical_formula_sum            'C36 H76 Nb O2 P3 Si6'
_chemical_formula_weight         895.32
_chemical_name_systematic        DH-113
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2017-05-31
_audit_creation_method
;
Olex2 1.2
(compiled 2017.01.04 svn.r3372 for OlexSys, GUI svn.r5292)
;
_audit_update_record
;
2017-05-31 deposited with the CCDC.
2017-07-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 100.01(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.548(5)
_cell_length_b                   18.581(9)
_cell_length_c                   20.379(7)
_cell_measurement_reflns_used    12043
_cell_measurement_temperature    100
_cell_measurement_theta_max      27.999
_cell_measurement_theta_min      2.006
_cell_volume                     5052(4)
_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      100.0
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker X8-KappaApexII'
_diffrn_measurement_method       'fine slicing \w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0682
_diffrn_reflns_av_unetI/netI     0.4568
_diffrn_reflns_Laue_measured_fraction_full 0.991
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            12043
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         27.999
_diffrn_reflns_theta_min         2.006
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.502
_exptl_absorpt_correction_T_max  0.745830
_exptl_absorpt_correction_T_min  0.537366
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (2009/2), Bruker AXS 2009'
_exptl_crystal_colour            'clear reddish brown'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   reddish
_exptl_crystal_colour_primary    brown
_exptl_crystal_density_diffrn    1.177
_exptl_crystal_description       plate
_exptl_crystal_F_000             1912
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.03
_refine_diff_density_max         1.087
_refine_diff_density_min         -1.623
_refine_diff_density_rms         0.144
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.826
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     455
_refine_ls_number_reflns         12043
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.826
_refine_ls_R_factor_all          0.2870
_refine_ls_R_factor_gt           0.0815
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0445P)^2^]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1404
_refine_ls_wR_factor_ref         0.1713
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3808
_reflns_number_total             12043
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7sc02708g2.cif
_cod_data_source_block           4043_0m0
_cod_database_code               1546540
_shelxl_version_number           2013-2
_shelx_estimated_absorpt_t_max   0.985
_shelx_estimated_absorpt_t_min   0.942
_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.a Ternary CH refined with riding coordinates:
 C7(H7), C18(H18)
2.b Secondary CH2 refined with riding coordinates:
 C25(H25A,H25B), C28(H28A,H28B), C31(H31A,H31B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C5(H5)
2.d Idealised Me refined as rotating group:
 C8(H8A,H8B,H8C), C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C11(H11A,H11B,H11C),
 C12(H12A,H12B,H12C), C13(H13A,H13B,H13C), C15(H15A,H15B,H15C), C16(H16A,H16B,
 H16C), C17(H17A,H17B,H17C), C19(H19A,H19B,H19C), C20(H20A,H20B,H20C), C21(H21A,
 H21B,H21C), C22(H22A,H22B,H22C), C23(H23A,H23B,H23C), C24(H24A,H24B,H24C),
 C26(H26A,H26B,H26C), C27(H27A,H27B,H27C), C29(H29A,H29B,H29C), C30(H30A,H30B,
 H30C), C32(H32A,H32B,H32C), C33(H33A,H33B,H33C), C34(H34A,H34B,H34C)
;
_shelx_res_checksum              98241
_olex2_submission_special_instructions 'No special instructions were received'