 
data_A081_002
 
_audit_creation_method            'SHELXL-2018/3'
_shelx_SHELXL_version_number      '2018/3'
_chemical_name_systematic         ?
_chemical_name_common             ?
_chemical_melting_point           ?
_chemical_formula_moiety          ?
_chemical_formula_sum
 'C26 H29 N Si' 
_chemical_formula_weight          383.59

loop_
 _atom_type_symbol
 _atom_type_description
 _atom_type_scat_dispersion_real
 _atom_type_scat_dispersion_imag
 _atom_type_scat_source
 'C'  'C'   0.0033   0.0016
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 'H'  'H'   0.0000   0.0000
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 'N'  'N'   0.0061   0.0033
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 'Si'  'Si'   0.0817   0.0704
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 
_space_group_crystal_system       triclinic
_space_group_IT_number            2
_space_group_name_H-M_alt         'P -1'
_space_group_name_Hall            '-P 1'
 
_shelx_space_group_comment
;
The symmetry employed for this shelxl refinement is uniquely defined
by the following loop, which should always be used as a source of
symmetry information in preference to the above space-group names.
They are only intended as comments.
;
 
loop_
 _space_group_symop_operation_xyz
 'x, y, z'
 '-x, -y, -z'
 
_cell_length_a                    8.6064(12)
_cell_length_b                    11.5010(17)
_cell_length_c                    12.8161(18)
_cell_angle_alpha                 71.480(5)
_cell_angle_beta                  71.156(5)
_cell_angle_gamma                 69.281(5)
_cell_volume                      1092.9(3)
_cell_formula_units_Z             2
_cell_measurement_temperature     173(2)
_cell_measurement_reflns_used      9686
_cell_measurement_theta_min        3.45
_cell_measurement_theta_max       30.08
 
_exptl_crystal_description        'block'
_exptl_crystal_colour             'colourless'
_exptl_crystal_density_meas       ?
_exptl_crystal_density_method     ?
_exptl_crystal_density_diffrn     1.166          
_exptl_crystal_F_000              412
_exptl_transmission_factor_min    ?
_exptl_transmission_factor_max    ?
_exptl_crystal_size_max           0.447
_exptl_crystal_size_mid           0.354
_exptl_crystal_size_min           0.245
_exptl_absorpt_coefficient_mu     0.118
_shelx_estimated_absorpt_T_min    0.949
_shelx_estimated_absorpt_T_max    0.972
_exptl_absorpt_correction_type    MULTI-SCAN
_exptl_absorpt_correction_T_min   0.7005
_exptl_absorpt_correction_T_max   0.7176
_exptl_absorpt_process_details    SADABS 
_exptl_absorpt_special_details    ?
_diffrn_ambient_temperature       173(2)
_diffrn_radiation_wavelength      0.71073
_diffrn_radiation_type            MoK\a
_diffrn_source                    'fine-focus sealed tube'
_diffrn_measurement_device_type   'Photon 100 CMOS detector' 
_diffrn_measurement_method        'phi and omega scans' 
_diffrn_detector_area_resol_mean  ?
_diffrn_reflns_number             44072
_diffrn_reflns_av_unetI/netI      0.0322
_diffrn_reflns_av_R_equivalents   0.0582
_diffrn_reflns_limit_h_min        -12
_diffrn_reflns_limit_h_max        12
_diffrn_reflns_limit_k_min        -16
_diffrn_reflns_limit_k_max        16
_diffrn_reflns_limit_l_min        -18
_diffrn_reflns_limit_l_max        18
_diffrn_reflns_theta_min          3.450
_diffrn_reflns_theta_max          30.091
_diffrn_reflns_theta_full         25.242
_diffrn_measured_fraction_theta_max   0.995
_diffrn_measured_fraction_theta_full  0.998
_diffrn_reflns_Laue_measured_fraction_max    0.995
_diffrn_reflns_Laue_measured_fraction_full   0.998
_diffrn_reflns_point_group_measured_fraction_max   0.995
_diffrn_reflns_point_group_measured_fraction_full  0.998
_reflns_number_total              6400
_reflns_number_gt                 5438
_reflns_threshold_expression      'I > 2σ(I)'
_reflns_Friedel_coverage          0.000
_reflns_Friedel_fraction_max      .
_reflns_Friedel_fraction_full     .
 
_reflns_special_details
;
 Reflections were merged by SHELXL according to the crystal
 class for the calculation of statistics and refinement.
 
 _reflns_Friedel_fraction is defined as the number of unique
 Friedel pairs measured divided by the number that would be
 possible theoretically, ignoring centric projections and
 systematic absences.
;
 
_computing_data_collection        'Bruker APEXIII' 
_computing_cell_refinement        'Bruker APEXIII' 
_computing_data_reduction         'Bruker SAINT' 
_computing_structure_solution     SHELXS
_computing_structure_refinement   SHELXL
_computing_molecular_graphics     ORTEP
_computing_publication_material   CIFTAB
_refine_special_details           ?
_refine_ls_structure_factor_coef  Fsqd
_refine_ls_matrix_type            full
_refine_ls_weighting_scheme       calc
_refine_ls_weighting_details
'w=1/[σ²(Fo²)+(0.0649P)²+0.2694P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary      ?
_atom_sites_solution_secondary    ?
_atom_sites_solution_hydrogens    geom
_refine_ls_hydrogen_treatment     constr
_refine_ls_extinction_method      none
_refine_ls_extinction_coef        .
_refine_ls_number_reflns          6400
_refine_ls_number_parameters      255
_refine_ls_number_restraints      0
_refine_ls_R_factor_all           0.0520
_refine_ls_R_factor_gt            0.0431
_refine_ls_wR_factor_ref          0.1260
_refine_ls_wR_factor_gt           0.1184
_refine_ls_goodness_of_fit_ref    1.031
_refine_ls_restrained_S_all       1.031
_refine_ls_shift/su_max           0.001
_refine_ls_shift/su_mean          0.000
 
loop_
 _atom_site_label
 _atom_site_type_symbol
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_U_iso_or_equiv
 _atom_site_adp_type
 _atom_site_occupancy
 _atom_site_site_symmetry_order  
 _atom_site_calc_flag
 _atom_site_refinement_flags_posn
 _atom_site_refinement_flags_adp
 _atom_site_refinement_flags_occupancy
 _atom_site_disorder_assembly
 _atom_site_disorder_group
Si1 Si 0.47798(4) 0.62285(3) 0.73540(2) 0.02631(9) Uani 1 1 d . . . . .
C1 C 0.49942(13) 0.71339(10) 0.58444(9) 0.0266(2) Uani 1 1 d . . . . .
C2 C 0.61256(14) 0.78968(10) 0.53462(9) 0.0301(2) Uani 1 1 d . . . . .
H2 H 0.689334 0.785257 0.575816 0.036 Uiso 1 1 calc R U . . .
C3 C 0.61735(15) 0.87118(11) 0.42802(10) 0.0352(2) Uani 1 1 d . . . . .
C4 C 0.50304(18) 0.87594(13) 0.36944(10) 0.0439(3) Uani 1 1 d . . . . .
H4 H 0.500063 0.933257 0.297502 0.053 Uiso 1 1 calc R U . . .
C5 C 0.39399(17) 0.79891(14) 0.41400(10) 0.0420(3) Uani 1 1 d . . . . .
H5 H 0.319349 0.802557 0.371551 0.050 Uiso 1 1 calc R U . . .
C6 C 0.39236(14) 0.71585(11) 0.52065(9) 0.0312(2) Uani 1 1 d . . . . .
C7 C 0.74039(19) 0.95181(12) 0.37957(12) 0.0481(3) Uani 1 1 d . . . . .
H7A H 0.692254 1.028765 0.409845 0.072 Uiso 1 1 calc R U . . .
H7B H 0.759678 0.976358 0.296857 0.072 Uiso 1 1 calc R U . . .
H7C H 0.849253 0.902731 0.400509 0.072 Uiso 1 1 calc R U . . .
N1 N 0.28345(13) 0.63367(11) 0.55911(9) 0.0380(2) Uani 1 1 d . . . . .
C8 C 0.10166(16) 0.70006(15) 0.59706(12) 0.0436(3) Uani 1 1 d . . . . .
H8A H 0.031449 0.644417 0.604666 0.052 Uiso 1 1 calc R U . . .
H8B H 0.069691 0.778758 0.538775 0.052 Uiso 1 1 calc R U . . .
C9 C 0.06118(14) 0.73564(13) 0.71063(10) 0.0354(2) Uani 1 1 d . . . . .
H9 H 0.124287 0.798256 0.700172 0.042 Uiso 1 1 calc R U . . .
C10 C 0.12215(15) 0.61662(13) 0.80005(11) 0.0386(3) Uani 1 1 d . . . . .
H10A H 0.048225 0.559869 0.819682 0.046 Uiso 1 1 calc R U . . .
H10B H 0.109901 0.642689 0.869510 0.046 Uiso 1 1 calc R U . . .
C11 C 0.30983(15) 0.54174(11) 0.75950(11) 0.0356(2) Uani 1 1 d . . . . .
H11 H 0.335336 0.457995 0.815182 0.043 Uiso 1 1 calc R U . . .
C12 C 0.33459(17) 0.51612(12) 0.64340(12) 0.0420(3) Uani 1 1 d . . . . .
H12A H 0.456415 0.472126 0.615588 0.050 Uiso 1 1 calc R U . . .
H12B H 0.266226 0.458555 0.652542 0.050 Uiso 1 1 calc R U . . .
C13 C -0.13160(16) 0.79973(16) 0.74646(12) 0.0469(3) Uani 1 1 d . . . . .
H13A H -0.167036 0.869033 0.682186 0.056 Uiso 1 1 calc R U . . .
H13B H -0.194054 0.735974 0.762594 0.056 Uiso 1 1 calc R U . . .
C14 C -0.18388(14) 0.85492(13) 0.84910(11) 0.0396(3) Uani 1 1 d . . . . .
C15 C -0.26227(18) 0.79466(15) 0.95467(13) 0.0461(3) Uani 1 1 d . . . . .
H15 H -0.283599 0.716165 0.963142 0.055 Uiso 1 1 calc R U . . .
C16 C -0.3106(2) 0.84615(17) 1.04866(13) 0.0546(4) Uani 1 1 d . . . . .
H16 H -0.365564 0.803503 1.120140 0.066 Uiso 1 1 calc R U . . .
C17 C -0.2790(2) 0.95804(17) 1.03824(15) 0.0607(4) Uani 1 1 d . . . . .
H17 H -0.310822 0.993028 1.102522 0.073 Uiso 1 1 calc R U . . .
C18 C -0.2011(3) 1.01980(18) 0.93443(17) 0.0691(5) Uani 1 1 d . . . . .
H18 H -0.178656 1.097540 0.927067 0.083 Uiso 1 1 calc R U . . .
C19 C -0.1549(2) 0.96924(17) 0.84000(15) 0.0566(4) Uani 1 1 d . . . . .
H19 H -0.102731 1.013589 0.768375 0.068 Uiso 1 1 calc R U . . .
C20 C 0.68816(14) 0.50112(10) 0.74954(9) 0.0297(2) Uani 1 1 d . . . . .
C21 C 0.73692(17) 0.45029(12) 0.85273(10) 0.0390(3) Uani 1 1 d . . . . .
H21 H 0.663004 0.480022 0.917844 0.047 Uiso 1 1 calc R U . . .
C22 C 0.89084(18) 0.35739(13) 0.86216(12) 0.0460(3) Uani 1 1 d . . . . .
H22 H 0.920326 0.323381 0.933352 0.055 Uiso 1 1 calc R U . . .
C23 C 1.00077(17) 0.31460(13) 0.76803(13) 0.0447(3) Uani 1 1 d . . . . .
H23 H 1.106338 0.251452 0.774276 0.054 Uiso 1 1 calc R U . . .
C24 C 0.95727(18) 0.36362(13) 0.66463(12) 0.0459(3) Uani 1 1 d . . . . .
H24 H 1.032977 0.334220 0.599776 0.055 Uiso 1 1 calc R U . . .
C25 C 0.80293(16) 0.45582(12) 0.65556(11) 0.0386(3) Uani 1 1 d . . . . .
H25 H 0.774483 0.488954 0.584039 0.046 Uiso 1 1 calc R U . . .
C26 C 0.41594(16) 0.73260(11) 0.83199(10) 0.0348(2) Uani 1 1 d . . . . .
H26A H 0.494895 0.785539 0.805701 0.052 Uiso 1 1 calc R U . . .
H26B H 0.421221 0.682135 0.909048 0.052 Uiso 1 1 calc R U . . .
H26C H 0.299217 0.787627 0.831828 0.052 Uiso 1 1 calc R U . . .
 
 
_geom_special_details
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
 
loop_
 _geom_bond_atom_site_label_1
 _geom_bond_atom_site_label_2
 _geom_bond_distance
 _geom_bond_site_symmetry_2
 _geom_bond_publ_flag
Si1 C1 1.8674(11) . ?
Si1 C26 1.8707(12) . ?
Si1 C20 1.8771(12) . ?
Si1 C11 1.8824(12) . ?
C1 C6 1.4043(15) . ?
C1 C2 1.4045(15) . ?
C2 C3 1.3872(16) . ?
C2 H2 0.9500 . ?
C3 C4 1.396(2) . ?
C3 C7 1.5070(18) . ?
C4 C5 1.383(2) . ?
C4 H4 0.9500 . ?
C5 C6 1.3959(17) . ?
C5 H5 0.9500 . ?
C6 N1 1.4308(16) . ?
C7 H7A 0.9800 . ?
C7 H7B 0.9800 . ?
C7 H7C 0.9800 . ?
N1 C12 1.4652(19) . ?
N1 C8 1.4718(16) . ?
C8 C9 1.5353(16) . ?
C8 H8A 0.9900 . ?
C8 H8B 0.9900 . ?
C9 C10 1.5317(19) . ?
C9 C13 1.5377(16) . ?
C9 H9 1.0000 . ?
C10 C11 1.5423(17) . ?
C10 H10A 0.9900 . ?
C10 H10B 0.9900 . ?
C11 C12 1.5413(18) . ?
C11 H11 1.0000 . ?
C12 H12A 0.9900 . ?
C12 H12B 0.9900 . ?
C13 C14 1.5105(18) . ?
C13 H13A 0.9900 . ?
C13 H13B 0.9900 . ?
C14 C15 1.383(2) . ?
C14 C19 1.386(2) . ?
C15 C16 1.389(2) . ?
C15 H15 0.9500 . ?
C16 C17 1.365(2) . ?
C16 H16 0.9500 . ?
C17 C18 1.373(3) . ?
C17 H17 0.9500 . ?
C18 C19 1.390(2) . ?
C18 H18 0.9500 . ?
C19 H19 0.9500 . ?
C20 C21 1.4002(16) . ?
C20 C25 1.4014(16) . ?
C21 C22 1.3896(18) . ?
C21 H21 0.9500 . ?
C22 C23 1.379(2) . ?
C22 H22 0.9500 . ?
C23 C24 1.382(2) . ?
C23 H23 0.9500 . ?
C24 C25 1.3882(17) . ?
C24 H24 0.9500 . ?
C25 H25 0.9500 . ?
C26 H26A 0.9800 . ?
C26 H26B 0.9800 . ?
C26 H26C 0.9800 . ?
 
loop_
 _geom_angle_atom_site_label_1
 _geom_angle_atom_site_label_2
 _geom_angle_atom_site_label_3
 _geom_angle
 _geom_angle_site_symmetry_1
 _geom_angle_site_symmetry_3
 _geom_angle_publ_flag
C1 Si1 C26 111.01(5) . . ?
C1 Si1 C20 108.27(5) . . ?
C26 Si1 C20 110.37(5) . . ?
C1 Si1 C11 103.69(5) . . ?
C26 Si1 C11 112.85(6) . . ?
C20 Si1 C11 110.39(5) . . ?
C6 C1 C2 118.05(10) . . ?
C6 C1 Si1 120.80(8) . . ?
C2 C1 Si1 120.92(8) . . ?
C3 C2 C1 123.02(11) . . ?
C3 C2 H2 118.5 . . ?
C1 C2 H2 118.5 . . ?
C2 C3 C4 117.29(11) . . ?
C2 C3 C7 120.57(12) . . ?
C4 C3 C7 122.13(12) . . ?
C5 C4 C3 121.34(11) . . ?
C5 C4 H4 119.3 . . ?
C3 C4 H4 119.3 . . ?
C4 C5 C6 120.74(12) . . ?
C4 C5 H5 119.6 . . ?
C6 C5 H5 119.6 . . ?
C5 C6 C1 119.42(11) . . ?
C5 C6 N1 117.93(11) . . ?
C1 C6 N1 122.63(10) . . ?
C3 C7 H7A 109.5 . . ?
C3 C7 H7B 109.5 . . ?
H7A C7 H7B 109.5 . . ?
C3 C7 H7C 109.5 . . ?
H7A C7 H7C 109.5 . . ?
H7B C7 H7C 109.5 . . ?
C6 N1 C12 115.60(10) . . ?
C6 N1 C8 113.26(10) . . ?
C12 N1 C8 110.40(11) . . ?
N1 C8 C9 112.67(10) . . ?
N1 C8 H8A 109.1 . . ?
C9 C8 H8A 109.1 . . ?
N1 C8 H8B 109.1 . . ?
C9 C8 H8B 109.1 . . ?
H8A C8 H8B 107.8 . . ?
C10 C9 C8 109.98(11) . . ?
C10 C9 C13 111.96(11) . . ?
C8 C9 C13 109.45(10) . . ?
C10 C9 H9 108.5 . . ?
C8 C9 H9 108.5 . . ?
C13 C9 H9 108.5 . . ?
C9 C10 C11 112.68(10) . . ?
C9 C10 H10A 109.1 . . ?
C11 C10 H10A 109.1 . . ?
C9 C10 H10B 109.1 . . ?
C11 C10 H10B 109.1 . . ?
H10A C10 H10B 107.8 . . ?
C12 C11 C10 109.19(11) . . ?
C12 C11 Si1 104.29(8) . . ?
C10 C11 Si1 116.90(8) . . ?
C12 C11 H11 108.7 . . ?
C10 C11 H11 108.7 . . ?
Si1 C11 H11 108.7 . . ?
N1 C12 C11 112.45(10) . . ?
N1 C12 H12A 109.1 . . ?
C11 C12 H12A 109.1 . . ?
N1 C12 H12B 109.1 . . ?
C11 C12 H12B 109.1 . . ?
H12A C12 H12B 107.8 . . ?
C14 C13 C9 114.35(10) . . ?
C14 C13 H13A 108.7 . . ?
C9 C13 H13A 108.7 . . ?
C14 C13 H13B 108.7 . . ?
C9 C13 H13B 108.7 . . ?
H13A C13 H13B 107.6 . . ?
C15 C14 C19 117.59(13) . . ?
C15 C14 C13 121.85(13) . . ?
C19 C14 C13 120.56(13) . . ?
C14 C15 C16 121.57(14) . . ?
C14 C15 H15 119.2 . . ?
C16 C15 H15 119.2 . . ?
C17 C16 C15 119.96(15) . . ?
C17 C16 H16 120.0 . . ?
C15 C16 H16 120.0 . . ?
C16 C17 C18 119.68(15) . . ?
C16 C17 H17 120.2 . . ?
C18 C17 H17 120.2 . . ?
C17 C18 C19 120.39(16) . . ?
C17 C18 H18 119.8 . . ?
C19 C18 H18 119.8 . . ?
C14 C19 C18 120.80(15) . . ?
C14 C19 H19 119.6 . . ?
C18 C19 H19 119.6 . . ?
C21 C20 C25 117.03(11) . . ?
C21 C20 Si1 122.46(9) . . ?
C25 C20 Si1 120.50(9) . . ?
C22 C21 C20 121.57(12) . . ?
C22 C21 H21 119.2 . . ?
C20 C21 H21 119.2 . . ?
C23 C22 C21 119.93(12) . . ?
C23 C22 H22 120.0 . . ?
C21 C22 H22 120.0 . . ?
C22 C23 C24 119.98(12) . . ?
C22 C23 H23 120.0 . . ?
C24 C23 H23 120.0 . . ?
C23 C24 C25 119.99(12) . . ?
C23 C24 H24 120.0 . . ?
C25 C24 H24 120.0 . . ?
C24 C25 C20 121.49(12) . . ?
C24 C25 H25 119.3 . . ?
C20 C25 H25 119.3 . . ?
Si1 C26 H26A 109.5 . . ?
Si1 C26 H26B 109.5 . . ?
H26A C26 H26B 109.5 . . ?
Si1 C26 H26C 109.5 . . ?
H26A C26 H26C 109.5 . . ?
H26B C26 H26C 109.5 . . ?
 
_refine_diff_density_max    0.241
_refine_diff_density_min   -0.282
_refine_diff_density_rms    0.056






















