data_5b
 
_audit_creation_method            SHELXL-97
_chemical_name_systematic
;
 ?
;
_chemical_name_common             ?
_chemical_melting_point           ?
_chemical_formula_moiety          ?
_chemical_formula_sum
 'C21.25 H30 B2 Cl3 N2 Si'
_chemical_formula_weight          469.53
 
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'
 'Cl'  'Cl'   0.1484   0.1585
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 'B'  'B'   0.0013   0.0007
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 
_symmetry_cell_setting            ?
_symmetry_space_group_name_H-M    ?
 
loop_
 _symmetry_equiv_pos_as_xyz
 'x, y, z'
 '-x+1/2, y+1/2, -z+1/2'
 '-x, -y, -z'
 'x-1/2, -y-1/2, z-1/2'
 
_cell_length_a                    6.755(6)
_cell_length_b                    19.491(9)
_cell_length_c                    20.603(10)
_cell_angle_alpha                 90.00
_cell_angle_beta                  93.47(4)
_cell_angle_gamma                 90.00
_cell_volume                      2708(3)
_cell_formula_units_Z             4
_cell_measurement_temperature     173(2)
_cell_measurement_reflns_used     ?
_cell_measurement_theta_min       ?
_cell_measurement_theta_max       ?
 
_exptl_crystal_description        ?
_exptl_crystal_colour             ?
_exptl_crystal_size_max           0.12
_exptl_crystal_size_mid           0.12
_exptl_crystal_size_min           0.04
_exptl_crystal_density_meas       ?
_exptl_crystal_density_diffrn     1.152
_exptl_crystal_density_method     'not measured'
_exptl_crystal_F_000              986
_exptl_absorpt_coefficient_mu     0.393
_exptl_absorpt_correction_type    none
_exptl_absorpt_correction_T_min   0.9544
_exptl_absorpt_correction_T_max   0.9845
_exptl_absorpt_process_details    ?
 
_exptl_special_details
;
 ?
;
 
_diffrn_ambient_temperature       173(2)
_diffrn_radiation_wavelength      0.71073
_diffrn_radiation_type            MoK\a
_diffrn_radiation_source          'fine-focus sealed tube'
_diffrn_radiation_monochromator   graphite
_diffrn_measurement_device_type   ?
_diffrn_measurement_method        ?
_diffrn_detector_area_resol_mean  ?
_diffrn_standards_number          ?
_diffrn_standards_interval_count  ?
_diffrn_standards_interval_time   ?
_diffrn_standards_decay_%         ?
_diffrn_reflns_number             9176
_diffrn_reflns_av_R_equivalents   0.0490
_diffrn_reflns_av_sigmaI/netI     0.0649
_diffrn_reflns_limit_h_min        -8
_diffrn_reflns_limit_h_max        8
_diffrn_reflns_limit_k_min        -22
_diffrn_reflns_limit_k_max        23
_diffrn_reflns_limit_l_min        -24
_diffrn_reflns_limit_l_max        24
_diffrn_reflns_theta_min          3.20
_diffrn_reflns_theta_max          25.02
_reflns_number_total              4738
_reflns_number_gt                 2925
_reflns_threshold_expression      >2sigma(I)
 
_computing_data_collection        ?
_computing_cell_refinement        ?
_computing_data_reduction         ?
_computing_structure_solution     ?
_computing_structure_refinement   'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics     ?
_computing_publication_material   ?
 
_refine_special_details
;
 Refinement of F² against ALL reflections.  The weighted R-factor wR and
 goodness of fit S are based on F², conventional R-factors R are based
 on F, with F set to zero for negative F². The threshold expression of
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is
 not relevant to the choice of reflections for refinement.  R-factors based
 on F² are statistically about twice as large as those based on F, and R-
 factors based on ALL data will be even larger.
;
 
_refine_ls_structure_factor_coef  Fsqd
_refine_ls_matrix_type            full
_refine_ls_weighting_scheme       calc
_refine_ls_weighting_details
 'calc w=1/[σ²(Fo²)+(0.0660P)²+3.9500P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary      direct
_atom_sites_solution_secondary    difmap
_atom_sites_solution_hydrogens    geom
_refine_ls_hydrogen_treatment     mixed
_refine_ls_extinction_method      none
_refine_ls_extinction_coef        ?
_refine_ls_number_reflns          4738
_refine_ls_number_parameters      267
_refine_ls_number_restraints      0
_refine_ls_R_factor_all           0.1196
_refine_ls_R_factor_gt            0.0656
_refine_ls_wR_factor_ref          0.1892
_refine_ls_wR_factor_gt           0.1552
_refine_ls_goodness_of_fit_ref    1.107
_refine_ls_restrained_S_all       1.107
_refine_ls_shift/su_max           0.032
_refine_ls_shift/su_mean          0.001
 
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_symmetry_multiplicity
 _atom_site_calc_flag
 _atom_site_refinement_flags
 _atom_site_disorder_assembly
 _atom_site_disorder_group
Cl1 Cl 1.34876(18) 0.23535(7) 0.26442(7) 0.0628(4) Uani 1 1 d . . .
Cl2 Cl 1.23265(19) 0.07620(6) 0.29817(7) 0.0632(4) Uani 1 1 d . . .
Cl3 Cl 1.26006(19) 0.18814(7) 0.41286(6) 0.0629(4) Uani 1 1 d . . .
Si1 Si 1.16885(18) 0.17609(7) 0.31738(6) 0.0448(3) Uani 1 1 d . . .
N1 N 0.8499(5) 0.31146(18) 0.25541(18) 0.0453(9) Uani 1 1 d . . .
N2 N 0.8338(5) 0.2636(2) 0.20125(17) 0.0470(9) Uani 1 1 d . . .
C1 C 0.9073(6) 0.1974(2) 0.2999(2) 0.0414(10) Uani 1 1 d . . .
C2 C 0.7868(7) 0.1466(2) 0.3414(2) 0.0502(12) Uani 1 1 d . . .
H2A H 0.6446 0.1553 0.3333 0.060 Uiso 1 1 calc R . .
H2B H 0.8240 0.1535 0.3877 0.060 Uiso 1 1 calc R . .
H2C H 0.8167 0.0993 0.3292 0.060 Uiso 1 1 calc R . .
C3 C 0.8088(7) 0.3856(2) 0.2485(3) 0.0598(14) Uani 1 1 d . . .
H3 H 0.8246 0.4019 0.2946 0.072 Uiso 1 1 calc R . .
C4 C 0.9645(9) 0.4264(3) 0.2165(3) 0.0730(16) Uani 1 1 d . . .
H4A H 0.9505 0.4751 0.2273 0.088 Uiso 1 1 calc R . .
H4B H 0.9480 0.4205 0.1692 0.088 Uiso 1 1 calc R . .
H4C H 1.0964 0.4103 0.2321 0.088 Uiso 1 1 calc R . .
C5 C 0.5959(8) 0.4036(3) 0.2301(3) 0.0751(17) Uani 1 1 d . . .
H5A H 0.5744 0.4525 0.2380 0.090 Uiso 1 1 calc R . .
H5B H 0.5084 0.3764 0.2563 0.090 Uiso 1 1 calc R . .
H5C H 0.5665 0.3935 0.1839 0.090 Uiso 1 1 calc R . .
C6 C 0.8058(8) 0.2904(3) 0.1345(2) 0.0640(14) Uani 1 1 d . . .
H6 H 0.7725 0.3400 0.1393 0.077 Uiso 1 1 calc R . .
C7 C 0.9973(12) 0.2891(4) 0.1008(3) 0.114(3) Uani 1 1 d . . .
H7A H 0.9808 0.3146 0.0598 0.137 Uiso 1 1 calc R . .
H7B H 1.0334 0.2415 0.0918 0.137 Uiso 1 1 calc R . .
H7C H 1.1023 0.3105 0.1289 0.137 Uiso 1 1 calc R . .
C8 C 0.6352(14) 0.2601(4) 0.0984(3) 0.124(3) Uani 1 1 d . . .
H8A H 0.6098 0.2848 0.0573 0.149 Uiso 1 1 calc R . .
H8B H 0.5185 0.2635 0.1243 0.149 Uiso 1 1 calc R . .
H8C H 0.6624 0.2118 0.0894 0.149 Uiso 1 1 calc R . .
C9 C 0.8943(7) 0.3144(2) 0.3818(2) 0.0499(12) Uani 1 1 d . . .
C10 C 1.0568(9) 0.3540(3) 0.4032(3) 0.0664(15) Uani 1 1 d . . .
H10 H 1.1636 0.3607 0.3759 0.080 Uiso 1 1 calc R . .
C11 C 1.0625(11) 0.3841(3) 0.4658(3) 0.083(2) Uani 1 1 d . . .
H11 H 1.1751 0.4099 0.4811 0.099 Uiso 1 1 calc R . .
C12 C 0.9063(14) 0.3761(3) 0.5043(3) 0.088(2) Uani 1 1 d . . .
H12 H 0.9104 0.3970 0.5460 0.106 Uiso 1 1 calc R . .
C13 C 0.7460(12) 0.3388(3) 0.4837(3) 0.085(2) Uani 1 1 d . . .
H13 H 0.6373 0.3340 0.5106 0.102 Uiso 1 1 calc R . .
C14 C 0.7414(9) 0.3078(3) 0.4237(2) 0.0669(15) Uani 1 1 d . . .
H14 H 0.6293 0.2808 0.4103 0.080 Uiso 1 1 calc R . .
C15 C 0.8489(8) 0.1304(2) 0.1802(2) 0.0512(12) Uani 1 1 d . . .
C16 C 1.0074(9) 0.1059(3) 0.1465(2) 0.0652(14) Uani 1 1 d . . .
H16 H 1.1284 0.1309 0.1480 0.078 Uiso 1 1 calc R . .
C17 C 0.9907(10) 0.0448(3) 0.1103(3) 0.0754(17) Uani 1 1 d . . .
H17 H 1.0995 0.0290 0.0873 0.090 Uiso 1 1 calc R . .
C18 C 0.8161(11) 0.0079(3) 0.1083(3) 0.0748(17) Uani 1 1 d . . .
H18 H 0.8046 -0.0335 0.0839 0.090 Uiso 1 1 calc R . .
C19 C 0.6599(10) 0.0309(3) 0.1414(3) 0.0724(16) Uani 1 1 d . . .
H19 H 0.5395 0.0056 0.1399 0.087 Uiso 1 1 calc R . .
C20 C 0.6766(8) 0.0907(3) 0.1769(2) 0.0589(13) Uani 1 1 d . . .
H20 H 0.5668 0.1056 0.1999 0.071 Uiso 1 1 calc R . .
B1 B 0.8836(8) 0.2773(3) 0.3138(3) 0.0450(13) Uani 1 1 d . . .
B2 B 0.8620(7) 0.1960(3) 0.2236(3) 0.0450(13) Uani 1 1 d . . .
C21 C 0.269(4) 0.4433(14) 0.0309(13) 0.193(10) Uiso 0.50 1 d P . .
C22 C 0.478(8) 0.465(3) 0.034(2) 0.34(2) Uiso 0.50 1 d P . .
C23 C 0.5000 0.5000 0.0000 0.22(2) Uiso 0.50 2 d SP . .
 
 
_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
Cl1 Si1 2.040(2) . ?
Cl2 Si1 2.038(2) . ?
Cl3 Si1 2.039(2) . ?
Si1 C1 1.829(5) . ?
N1 B1 1.382(6) . ?
N1 N2 1.454(5) . ?
N1 C3 1.476(6) . ?
N2 B2 1.404(6) . ?
N2 C6 1.473(6) . ?
C1 C2 1.568(6) . ?
C1 B2 1.585(7) . ?
C1 B1 1.592(7) . ?
C2 H2A 0.9800 . ?
C2 H2B 0.9800 . ?
C2 H2C 0.9800 . ?
C3 C4 1.503(7) . ?
C3 C5 1.507(7) . ?
C3 H3 1.0000 . ?
C4 H4A 0.9800 . ?
C4 H4B 0.9800 . ?
C4 H4C 0.9800 . ?
C5 H5A 0.9800 . ?
C5 H5B 0.9800 . ?
C5 H5C 0.9800 . ?
C6 C8 1.457(8) . ?
C6 C7 1.504(8) . ?
C6 H6 1.0000 . ?
C7 H7A 0.9800 . ?
C7 H7B 0.9800 . ?
C7 H7C 0.9800 . ?
C8 H8A 0.9800 . ?
C8 H8B 0.9800 . ?
C8 H8C 0.9800 . ?
C9 C10 1.391(7) . ?
C9 C14 1.391(7) . ?
C9 B1 1.575(7) . ?
C10 C11 1.417(8) . ?
C10 H10 0.9500 . ?
C11 C12 1.366(9) . ?
C11 H11 0.9500 . ?
C12 C13 1.350(9) . ?
C12 H12 0.9500 . ?
C13 C14 1.375(8) . ?
C13 H13 0.9500 . ?
C14 H14 0.9500 . ?
C15 C16 1.394(7) . ?
C15 C20 1.395(7) . ?
C15 B2 1.560(7) . ?
C16 C17 1.406(7) . ?
C16 H16 0.9500 . ?
C17 C18 1.381(8) . ?
C17 H17 0.9500 . ?
C18 C19 1.366(8) . ?
C18 H18 0.9500 . ?
C19 C20 1.378(7) . ?
C19 H19 0.9500 . ?
C20 H20 0.9500 . ?
C21 C22 1.47(5) . ?
C22 C23 1.00(5) . ?
C22 C22 2.01(10) 3_665 ?
C23 C22 1.00(5) 3_665 ?
 
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 Cl2 113.09(15) . . ?
C1 Si1 Cl3 113.28(15) . . ?
Cl2 Si1 Cl3 104.02(8) . . ?
C1 Si1 Cl1 111.44(16) . . ?
Cl2 Si1 Cl1 107.29(9) . . ?
Cl3 Si1 Cl1 107.20(9) . . ?
B1 N1 N2 111.0(4) . . ?
B1 N1 C3 125.2(4) . . ?
N2 N1 C3 123.3(4) . . ?
B2 N2 N1 110.4(4) . . ?
B2 N2 C6 130.2(4) . . ?
N1 N2 C6 119.3(4) . . ?
C2 C1 B2 117.0(4) . . ?
C2 C1 B1 117.3(4) . . ?
B2 C1 B1 100.3(4) . . ?
C2 C1 Si1 106.0(3) . . ?
B2 C1 Si1 108.5(3) . . ?
B1 C1 Si1 107.1(3) . . ?
C1 C2 H2A 109.5 . . ?
C1 C2 H2B 109.5 . . ?
H2A C2 H2B 109.5 . . ?
C1 C2 H2C 109.5 . . ?
H2A C2 H2C 109.5 . . ?
H2B C2 H2C 109.5 . . ?
N1 C3 C4 115.4(4) . . ?
N1 C3 C5 115.0(4) . . ?
C4 C3 C5 116.6(5) . . ?
N1 C3 H3 102.2 . . ?
C4 C3 H3 102.2 . . ?
C5 C3 H3 102.2 . . ?
C3 C4 H4A 109.5 . . ?
C3 C4 H4B 109.5 . . ?
H4A C4 H4B 109.5 . . ?
C3 C4 H4C 109.5 . . ?
H4A C4 H4C 109.5 . . ?
H4B C4 H4C 109.5 . . ?
C3 C5 H5A 109.5 . . ?
C3 C5 H5B 109.5 . . ?
H5A C5 H5B 109.5 . . ?
C3 C5 H5C 109.5 . . ?
H5A C5 H5C 109.5 . . ?
H5B C5 H5C 109.5 . . ?
C8 C6 N2 112.7(5) . . ?
C8 C6 C7 115.7(6) . . ?
N2 C6 C7 111.1(5) . . ?
C8 C6 H6 105.5 . . ?
N2 C6 H6 105.5 . . ?
C7 C6 H6 105.5 . . ?
C6 C7 H7A 109.5 . . ?
C6 C7 H7B 109.5 . . ?
H7A C7 H7B 109.5 . . ?
C6 C7 H7C 109.5 . . ?
H7A C7 H7C 109.5 . . ?
H7B C7 H7C 109.5 . . ?
C6 C8 H8A 109.5 . . ?
C6 C8 H8B 109.5 . . ?
H8A C8 H8B 109.5 . . ?
C6 C8 H8C 109.5 . . ?
H8A C8 H8C 109.5 . . ?
H8B C8 H8C 109.5 . . ?
C10 C9 C14 117.1(5) . . ?
C10 C9 B1 122.0(5) . . ?
C14 C9 B1 120.9(4) . . ?
C9 C10 C11 119.7(6) . . ?
C9 C10 H10 120.2 . . ?
C11 C10 H10 120.2 . . ?
C12 C11 C10 120.1(6) . . ?
C12 C11 H11 119.9 . . ?
C10 C11 H11 119.9 . . ?
C13 C12 C11 120.8(6) . . ?
C13 C12 H12 119.6 . . ?
C11 C12 H12 119.6 . . ?
C12 C13 C14 119.5(7) . . ?
C12 C13 H13 120.3 . . ?
C14 C13 H13 120.3 . . ?
C13 C14 C9 122.7(6) . . ?
C13 C14 H14 118.6 . . ?
C9 C14 H14 118.6 . . ?
C16 C15 C20 116.7(5) . . ?
C16 C15 B2 123.2(4) . . ?
C20 C15 B2 120.0(5) . . ?
C15 C16 C17 120.9(5) . . ?
C15 C16 H16 119.5 . . ?
C17 C16 H16 119.5 . . ?
C18 C17 C16 119.9(6) . . ?
C18 C17 H17 120.0 . . ?
C16 C17 H17 120.0 . . ?
C19 C18 C17 119.8(5) . . ?
C19 C18 H18 120.1 . . ?
C17 C18 H18 120.1 . . ?
C18 C19 C20 120.2(6) . . ?
C18 C19 H19 119.9 . . ?
C20 C19 H19 119.9 . . ?
C19 C20 C15 122.4(6) . . ?
C19 C20 H20 118.8 . . ?
C15 C20 H20 118.8 . . ?
N1 B1 C9 123.3(4) . . ?
N1 B1 C1 109.2(4) . . ?
C9 B1 C1 127.5(4) . . ?
N2 B2 C15 125.4(4) . . ?
N2 B2 C1 108.9(4) . . ?
C15 B2 C1 125.7(4) . . ?
C23 C22 C21 110(4) . . ?
C23 C22 C22 0(3) . 3_665 ?
C21 C22 C22 110(4) . 3_665 ?
C22 C23 C22 180(6) . 3_665 ?
 
loop_
 _geom_torsion_atom_site_label_1
 _geom_torsion_atom_site_label_2
 _geom_torsion_atom_site_label_3
 _geom_torsion_atom_site_label_4
 _geom_torsion
 _geom_torsion_site_symmetry_1
 _geom_torsion_site_symmetry_2
 _geom_torsion_site_symmetry_3
 _geom_torsion_site_symmetry_4
 _geom_torsion_publ_flag
B1 N1 N2 B2 -1.4(5) . . . . ?
C3 N1 N2 B2 -174.0(4) . . . . ?
B1 N1 N2 C6 -177.6(4) . . . . ?
C3 N1 N2 C6 9.8(6) . . . . ?
Cl2 Si1 C1 C2 56.9(3) . . . . ?
Cl3 Si1 C1 C2 -61.2(3) . . . . ?
Cl1 Si1 C1 C2 177.8(2) . . . . ?
Cl2 Si1 C1 B2 -69.6(3) . . . . ?
Cl3 Si1 C1 B2 172.3(3) . . . . ?
Cl1 Si1 C1 B2 51.3(3) . . . . ?
Cl2 Si1 C1 B1 -177.2(3) . . . . ?
Cl3 Si1 C1 B1 64.8(3) . . . . ?
Cl1 Si1 C1 B1 -56.2(3) . . . . ?
B1 N1 C3 C4 114.7(6) . . . . ?
N2 N1 C3 C4 -73.8(6) . . . . ?
B1 N1 C3 C5 -105.1(6) . . . . ?
N2 N1 C3 C5 66.5(6) . . . . ?
B2 N2 C6 C8 58.0(8) . . . . ?
N1 N2 C6 C8 -126.8(6) . . . . ?
B2 N2 C6 C7 -73.8(7) . . . . ?
N1 N2 C6 C7 101.5(6) . . . . ?
C14 C9 C10 C11 1.3(7) . . . . ?
B1 C9 C10 C11 -177.5(5) . . . . ?
C9 C10 C11 C12 -2.0(8) . . . . ?
C10 C11 C12 C13 0.9(10) . . . . ?
C11 C12 C13 C14 0.8(10) . . . . ?
C12 C13 C14 C9 -1.5(9) . . . . ?
C10 C9 C14 C13 0.4(8) . . . . ?
B1 C9 C14 C13 179.3(5) . . . . ?
C20 C15 C16 C17 1.1(7) . . . . ?
B2 C15 C16 C17 177.2(5) . . . . ?
C15 C16 C17 C18 -0.6(8) . . . . ?
C16 C17 C18 C19 0.1(9) . . . . ?
C17 C18 C19 C20 -0.2(8) . . . . ?
C18 C19 C20 C15 0.7(8) . . . . ?
C16 C15 C20 C19 -1.1(7) . . . . ?
B2 C15 C20 C19 -177.4(5) . . . . ?
N2 N1 B1 C9 -176.0(4) . . . . ?
C3 N1 B1 C9 -3.5(7) . . . . ?
N2 N1 B1 C1 3.8(5) . . . . ?
C3 N1 B1 C1 176.3(4) . . . . ?
C10 C9 B1 N1 -73.9(6) . . . . ?
C14 C9 B1 N1 107.3(6) . . . . ?
C10 C9 B1 C1 106.4(6) . . . . ?
C14 C9 B1 C1 -72.5(6) . . . . ?
C2 C1 B1 N1 -132.3(4) . . . . ?
B2 C1 B1 N1 -4.4(5) . . . . ?
Si1 C1 B1 N1 108.8(4) . . . . ?
C2 C1 B1 C9 47.5(6) . . . . ?
B2 C1 B1 C9 175.4(5) . . . . ?
Si1 C1 B1 C9 -71.4(5) . . . . ?
N1 N2 B2 C15 177.9(4) . . . . ?
C6 N2 B2 C15 -6.5(8) . . . . ?
N1 N2 B2 C1 -1.6(5) . . . . ?
C6 N2 B2 C1 173.9(4) . . . . ?
C16 C15 B2 N2 84.4(6) . . . . ?
C20 C15 B2 N2 -99.6(6) . . . . ?
C16 C15 B2 C1 -96.1(6) . . . . ?
C20 C15 B2 C1 79.9(6) . . . . ?
C2 C1 B2 N2 131.6(4) . . . . ?
B1 C1 B2 N2 3.6(5) . . . . ?
Si1 C1 B2 N2 -108.5(4) . . . . ?
C2 C1 B2 C15 -47.9(6) . . . . ?
B1 C1 B2 C15 -176.0(5) . . . . ?
Si1 C1 B2 C15 71.9(5) . . . . ?
C21 C22 C23 C22 -30(100) . . . 3_665 ?
 
_diffrn_measured_fraction_theta_max    0.993
_diffrn_reflns_theta_full              25.02
_diffrn_measured_fraction_theta_full   0.993
_refine_diff_density_max    0.488
_refine_diff_density_min   -0.232
_refine_diff_density_rms    0.064
