# Electronic Supplementary Material (ESI) for ChemComm.
# This journal is © The Royal Society of Chemistry 2017

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
# this file and to allow appropriate attribution of the data. 
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data_CG_BC_PM_09
_database_code_depnum_ccdc_archive 'CCDC 1483484'
_audit_update_record             
;
2016-06-04 deposited with the CCDC.
2017-02-02 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2014/7
_shelx_SHELXL_version_number     2014/7
_chemical_name_systematic        ?
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C144 H120 B2 O7 Si8'
_chemical_formula_weight         2208.73

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'
B B 0.0013 0.0007 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 '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      trigonal
_space_group_IT_number           148
_space_group_name_H-M_alt        'R -3 :H'
_space_group_name_Hall           '-R 3'

_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'
'-y, x-y, z'
'-x+y, -x, z'
'x+2/3, y+1/3, z+1/3'
'-y+2/3, x-y+1/3, z+1/3'
'-x+y+2/3, -x+1/3, z+1/3'
'x+1/3, y+2/3, z+2/3'
'-y+1/3, x-y+2/3, z+2/3'
'-x+y+1/3, -x+2/3, z+2/3'
'-x, -y, -z'
'y, -x+y, -z'
'x-y, x, -z'
'-x+2/3, -y+1/3, -z+1/3'
'y+2/3, -x+y+1/3, -z+1/3'
'x-y+2/3, x+1/3, -z+1/3'
'-x+1/3, -y+2/3, -z+2/3'
'y+1/3, -x+y+2/3, -z+2/3'
'x-y+1/3, x+2/3, -z+2/3'

_cell_length_a                   18.8982(9)
_cell_length_b                   18.8982(9)
_cell_length_c                   28.7167(14)
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_volume                     8881.9(10)
_cell_formula_units_Z            3
_cell_measurement_temperature    296(2)
_cell_measurement_reflns_used    8836
_cell_measurement_theta_min      3.03
_cell_measurement_theta_max      30.22

_exptl_crystal_description       BLOCK
_exptl_crystal_colour            COLORLESS
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.239
_exptl_crystal_F_000             3486
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.19
_exptl_absorpt_coefficient_mu    0.150
_shelx_estimated_absorpt_T_min   ?
_shelx_estimated_absorpt_T_max   ?
_exptl_absorpt_correction_type   MULTI-SCAN
_exptl_absorpt_correction_T_min  0.4100
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_process_details   SADABS
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      296(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   'sealed tube'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            35487
_diffrn_reflns_av_unetI/netI     0.0590
_diffrn_reflns_av_R_equivalents  0.1130
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_theta_min         2.588
_diffrn_reflns_theta_max         25.489
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measured_fraction_theta_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_point_group_measured_fraction_full 0.996
_reflns_number_total             3662
_reflns_number_gt                3203
_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 APEX2'
_computing_cell_refinement       'Bruker SAINT'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_solution    'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_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)+(0.0421P)²+17.2025P] 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         3662
_refine_ls_number_parameters     243
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0546
_refine_ls_R_factor_gt           0.0475
_refine_ls_wR_factor_ref         0.1197
_refine_ls_wR_factor_gt          0.1149
_refine_ls_goodness_of_fit_ref   1.102
_refine_ls_restrained_S_all      1.102
_refine_ls_shift/su_max          0.002
_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
Si2 Si 0.6667 0.3333 0.77685(3) 0.0243(2) Uani 1 3 d S T P . .
Si1 Si 0.16833(3) 0.07211(3) 0.79032(2) 0.02057(16) Uani 1 1 d . . . . .
C1 C 0.16575(11) 0.05804(12) 0.85495(6) 0.0228(4) Uani 1 1 d . . . . .
C7 C 0.24789(11) 0.17789(11) 0.77485(6) 0.0224(4) Uani 1 1 d . . . . .
C13 C 0.18972(11) -0.00384(12) 0.76193(6) 0.0240(4) Uani 1 1 d . . . . .
C17 C 0.23904(14) -0.10001(15) 0.76516(8) 0.0385(5) Uani 1 1 d . . . . .
H17 H 0.2606 -0.1266 0.7823 0.046 Uiso 1 1 calc R U . . .
C2 C 0.10654(12) -0.01488(12) 0.87501(7) 0.0274(4) Uani 1 1 d . . . . .
H2 H 0.0694 -0.0567 0.8558 0.033 Uiso 1 1 calc R U . . .
C5 C 0.21665(14) 0.10702(14) 0.93285(7) 0.0332(5) Uani 1 1 d . . . . .
H5 H 0.2541 0.1481 0.9522 0.040 Uiso 1 1 calc R U . . .
C6 C 0.22068(13) 0.11901(12) 0.88483(7) 0.0287(4) Uani 1 1 d . . . . .
H6 H 0.2607 0.1685 0.8725 0.034 Uiso 1 1 calc R U . . .
C3 C 0.10151(13) -0.02668(13) 0.92284(7) 0.0306(5) Uani 1 1 d . . . . .
H3 H 0.0608 -0.0755 0.9355 0.037 Uiso 1 1 calc R U . . .
C18 C 0.22217(12) -0.04443(12) 0.78670(7) 0.0288(4) Uani 1 1 d . . . . .
H18 H 0.2327 -0.0340 0.8183 0.035 Uiso 1 1 calc R U . . .
C4 C 0.15735(13) 0.03447(14) 0.95163(7) 0.0319(5) Uani 1 1 d . . . . .
H4 H 0.1548 0.0265 0.9837 0.038 Uiso 1 1 calc R U . . .
B1 B 0.0000 0.0000 0.77401(11) 0.0208(7) Uani 1 3 d S T P . .
C19 C 0.57593(12) 0.23654(13) 0.75610(7) 0.0288(4) Uani 1 1 d . . . . .
C12 C 0.32920(14) 0.19717(14) 0.77108(8) 0.0388(5) Uani 1 1 d . . . . .
H12 H 0.3420 0.1559 0.7743 0.047 Uiso 1 1 calc R U . . .
C20 C 0.53061(14) 0.17149(14) 0.78626(8) 0.0354(5) Uani 1 1 d . . . . .
H20 H 0.5469 0.1755 0.8172 0.042 Uiso 1 1 calc R U . . .
C9 C 0.29302(15) 0.32039(13) 0.76073(8) 0.0366(5) Uani 1 1 d . . . . .
H9 H 0.2806 0.3618 0.7569 0.044 Uiso 1 1 calc R U . . .
C8 C 0.23112(13) 0.24127(12) 0.76942(7) 0.0292(4) Uani 1 1 d . . . . .
H8 H 0.1775 0.2303 0.7717 0.035 Uiso 1 1 calc R U . . .
C10 C 0.37299(15) 0.33792(14) 0.75774(8) 0.0411(6) Uani 1 1 d . . . . .
H10 H 0.4146 0.3912 0.7524 0.049 Uiso 1 1 calc R U . . .
C16 C 0.22386(15) -0.11580(15) 0.71823(8) 0.0412(6) Uani 1 1 d . . . . .
H16 H 0.2352 -0.1530 0.7037 0.049 Uiso 1 1 calc R U . . .
C21 C 0.46204(15) 0.10127(14) 0.77132(9) 0.0437(6) Uani 1 1 d . . . . .
H21 H 0.4326 0.0589 0.7922 0.052 Uiso 1 1 calc R U . . .
C14 C 0.17542(15) -0.02085(14) 0.71448(7) 0.0367(5) Uani 1 1 d . . . . .
H14 H 0.1543 0.0058 0.6970 0.044 Uiso 1 1 calc R U . . .
C24 C 0.54930(15) 0.22710(15) 0.70995(8) 0.0404(5) Uani 1 1 d . . . . .
H24 H 0.5782 0.2692 0.6888 0.049 Uiso 1 1 calc R U . . .
C11 C 0.39110(14) 0.27612(15) 0.76274(9) 0.0471(6) Uani 1 1 d . . . . .
H11 H 0.4449 0.2876 0.7605 0.056 Uiso 1 1 calc R U . . .
C22 C 0.43711(15) 0.09365(15) 0.72576(10) 0.0474(6) Uani 1 1 d . . . . .
H22 H 0.3909 0.0462 0.7158 0.057 Uiso 1 1 calc R U . . .
C15 C 0.19191(17) -0.07641(16) 0.69285(8) 0.0448(6) Uani 1 1 d . . . . .
H15 H 0.1815 -0.0872 0.6612 0.054 Uiso 1 1 calc R U . . .
C23 C 0.48074(16) 0.15639(17) 0.69489(9) 0.0506(7) Uani 1 1 d . . . . .
H23 H 0.4642 0.1513 0.6640 0.061 Uiso 1 1 calc R U . . .
O1 O 0.07966(8) 0.06101(8) 0.77372(4) 0.0242(3) Uani 1 1 d . . . . .
O2 O 0.6667 0.3333 0.8333 0.0300(8) Uani 1 6 d S T P . .


_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
Si2 O2 1.6219(8) . ?
Si2 C19 1.872(2) . ?
Si2 C19 1.872(2) 2_655 ?
Si2 C19 1.872(2) 3_665 ?
Si1 O1 1.6517(14) . ?
Si1 C7 1.8570(19) . ?
Si1 C13 1.862(2) . ?
Si1 C1 1.8719(19) . ?
C1 C2 1.393(3) . ?
C1 C6 1.395(3) . ?
C7 C8 1.392(3) . ?
C7 C12 1.395(3) . ?
C13 C18 1.393(3) . ?
C13 C14 1.395(3) . ?
C17 C16 1.379(3) . ?
C17 C18 1.387(3) . ?
C17 H17 0.9300 . ?
C2 C3 1.387(3) . ?
C2 H2 0.9300 . ?
C5 C4 1.375(3) . ?
C5 C6 1.393(3) . ?
C5 H5 0.9300 . ?
C6 H6 0.9300 . ?
C3 C4 1.383(3) . ?
C3 H3 0.9300 . ?
C18 H18 0.9300 . ?
C4 H4 0.9300 . ?
B1 O1 1.3638(13) . ?
B1 O1 1.3638(13) 3 ?
B1 O1 1.3638(13) 2 ?
C19 C20 1.394(3) . ?
C19 C24 1.397(3) . ?
C12 C11 1.381(3) . ?
C12 H12 0.9300 . ?
C20 C21 1.380(3) . ?
C20 H20 0.9300 . ?
C9 C10 1.379(3) . ?
C9 C8 1.385(3) . ?
C9 H9 0.9300 . ?
C8 H8 0.9300 . ?
C10 C11 1.379(4) . ?
C10 H10 0.9300 . ?
C16 C15 1.378(4) . ?
C16 H16 0.9300 . ?
C21 C22 1.374(4) . ?
C21 H21 0.9300 . ?
C14 C15 1.383(3) . ?
C14 H14 0.9300 . ?
C24 C23 1.386(3) . ?
C24 H24 0.9300 . ?
C11 H11 0.9300 . ?
C22 C23 1.376(4) . ?
C22 H22 0.9300 . ?
C15 H15 0.9300 . ?
C23 H23 0.9300 . ?
O2 Si2 1.6218(8) 16_656 ?

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
O2 Si2 C19 108.56(7) . . ?
O2 Si2 C19 108.57(7) . 2_655 ?
C19 Si2 C19 110.36(7) . 2_655 ?
O2 Si2 C19 108.57(7) . 3_665 ?
C19 Si2 C19 110.36(7) . 3_665 ?
C19 Si2 C19 110.36(7) 2_655 3_665 ?
O1 Si1 C7 106.95(8) . . ?
O1 Si1 C13 111.91(8) . . ?
C7 Si1 C13 110.74(8) . . ?
O1 Si1 C1 108.39(8) . . ?
C7 Si1 C1 109.86(8) . . ?
C13 Si1 C1 108.95(8) . . ?
C2 C1 C6 117.44(17) . . ?
C2 C1 Si1 120.09(14) . . ?
C6 C1 Si1 122.46(15) . . ?
C8 C7 C12 117.47(18) . . ?
C8 C7 Si1 122.88(15) . . ?
C12 C7 Si1 119.53(15) . . ?
C18 C13 C14 117.37(18) . . ?
C18 C13 Si1 121.72(14) . . ?
C14 C13 Si1 120.89(15) . . ?
C16 C17 C18 119.9(2) . . ?
C16 C17 H17 120.1 . . ?
C18 C17 H17 120.1 . . ?
C3 C2 C1 121.66(18) . . ?
C3 C2 H2 119.2 . . ?
C1 C2 H2 119.2 . . ?
C4 C5 C6 120.10(19) . . ?
C4 C5 H5 120.0 . . ?
C6 C5 H5 120.0 . . ?
C5 C6 C1 121.12(19) . . ?
C5 C6 H6 119.4 . . ?
C1 C6 H6 119.4 . . ?
C4 C3 C2 119.68(19) . . ?
C4 C3 H3 120.2 . . ?
C2 C3 H3 120.2 . . ?
C17 C18 C13 121.37(19) . . ?
C17 C18 H18 119.3 . . ?
C13 C18 H18 119.3 . . ?
C5 C4 C3 119.99(18) . . ?
C5 C4 H4 120.0 . . ?
C3 C4 H4 120.0 . . ?
O1 B1 O1 119.995(4) . 3 ?
O1 B1 O1 119.998(5) . 2 ?
O1 B1 O1 119.996(5) 3 2 ?
C20 C19 C24 117.0(2) . . ?
C20 C19 Si2 121.52(16) . . ?
C24 C19 Si2 121.48(17) . . ?
C11 C12 C7 121.5(2) . . ?
C11 C12 H12 119.2 . . ?
C7 C12 H12 119.2 . . ?
C21 C20 C19 121.5(2) . . ?
C21 C20 H20 119.3 . . ?
C19 C20 H20 119.3 . . ?
C10 C9 C8 120.2(2) . . ?
C10 C9 H9 119.9 . . ?
C8 C9 H9 119.9 . . ?
C9 C8 C7 121.10(19) . . ?
C9 C8 H8 119.5 . . ?
C7 C8 H8 119.5 . . ?
C9 C10 C11 119.8(2) . . ?
C9 C10 H10 120.1 . . ?
C11 C10 H10 120.1 . . ?
C15 C16 C17 120.0(2) . . ?
C15 C16 H16 120.0 . . ?
C17 C16 H16 120.0 . . ?
C22 C21 C20 120.3(2) . . ?
C22 C21 H21 119.8 . . ?
C20 C21 H21 119.8 . . ?
C15 C14 C13 121.5(2) . . ?
C15 C14 H14 119.3 . . ?
C13 C14 H14 119.3 . . ?
C23 C24 C19 121.5(2) . . ?
C23 C24 H24 119.2 . . ?
C19 C24 H24 119.2 . . ?
C10 C11 C12 119.9(2) . . ?
C10 C11 H11 120.1 . . ?
C12 C11 H11 120.1 . . ?
C21 C22 C23 119.8(2) . . ?
C21 C22 H22 120.1 . . ?
C23 C22 H22 120.1 . . ?
C16 C15 C14 119.9(2) . . ?
C16 C15 H15 120.1 . . ?
C14 C15 H15 120.1 . . ?
C22 C23 C24 119.9(2) . . ?
C22 C23 H23 120.1 . . ?
C24 C23 H23 120.1 . . ?
B1 O1 Si1 136.60(11) . . ?
Si2 O2 Si2 180.0 16_656 . ?

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
O1 Si1 C1 C2 58.71(17) . . . . ?
C7 Si1 C1 C2 175.24(15) . . . . ?
C13 Si1 C1 C2 -63.29(17) . . . . ?
O1 Si1 C1 C6 -120.14(16) . . . . ?
C7 Si1 C1 C6 -3.61(19) . . . . ?
C13 Si1 C1 C6 117.86(17) . . . . ?
O1 Si1 C7 C8 23.96(17) . . . . ?
C13 Si1 C7 C8 146.13(16) . . . . ?
C1 Si1 C7 C8 -93.47(17) . . . . ?
O1 Si1 C7 C12 -160.03(16) . . . . ?
C13 Si1 C7 C12 -37.86(19) . . . . ?
C1 Si1 C7 C12 82.54(18) . . . . ?
O1 Si1 C13 C18 -137.23(16) . . . . ?
C7 Si1 C13 C18 103.55(17) . . . . ?
C1 Si1 C13 C18 -17.39(19) . . . . ?
O1 Si1 C13 C14 44.26(19) . . . . ?
C7 Si1 C13 C14 -74.97(19) . . . . ?
C1 Si1 C13 C14 164.10(17) . . . . ?
C6 C1 C2 C3 0.5(3) . . . . ?
Si1 C1 C2 C3 -178.36(16) . . . . ?
C4 C5 C6 C1 -0.6(3) . . . . ?
C2 C1 C6 C5 0.4(3) . . . . ?
Si1 C1 C6 C5 179.30(16) . . . . ?
C1 C2 C3 C4 -1.3(3) . . . . ?
C16 C17 C18 C13 0.2(3) . . . . ?
C14 C13 C18 C17 -0.5(3) . . . . ?
Si1 C13 C18 C17 -179.04(17) . . . . ?
C6 C5 C4 C3 -0.1(3) . . . . ?
C2 C3 C4 C5 1.0(3) . . . . ?
O2 Si2 C19 C20 -12.85(19) . . . . ?
C19 Si2 C19 C20 106.0(2) 2_655 . . . ?
C19 Si2 C19 C20 -131.72(19) 3_665 . . . ?
O2 Si2 C19 C24 165.41(16) . . . . ?
C19 Si2 C19 C24 -75.71(17) 2_655 . . . ?
C19 Si2 C19 C24 46.5(2) 3_665 . . . ?
C8 C7 C12 C11 0.6(3) . . . . ?
Si1 C7 C12 C11 -175.59(19) . . . . ?
C24 C19 C20 C21 -0.7(3) . . . . ?
Si2 C19 C20 C21 177.68(18) . . . . ?
C10 C9 C8 C7 -0.6(3) . . . . ?
C12 C7 C8 C9 -0.2(3) . . . . ?
Si1 C7 C8 C9 175.92(16) . . . . ?
C8 C9 C10 C11 1.0(4) . . . . ?
C18 C17 C16 C15 -0.1(4) . . . . ?
C19 C20 C21 C22 0.6(4) . . . . ?
C18 C13 C14 C15 0.7(3) . . . . ?
Si1 C13 C14 C15 179.24(19) . . . . ?
C20 C19 C24 C23 0.3(3) . . . . ?
Si2 C19 C24 C23 -178.1(2) . . . . ?
C9 C10 C11 C12 -0.5(4) . . . . ?
C7 C12 C11 C10 -0.3(4) . . . . ?
C20 C21 C22 C23 0.0(4) . . . . ?
C17 C16 C15 C14 0.2(4) . . . . ?
C13 C14 C15 C16 -0.6(4) . . . . ?
C21 C22 C23 C24 -0.4(4) . . . . ?
C19 C24 C23 C22 0.2(4) . . . . ?
O1 B1 O1 Si1 -25.9(4) 3 . . . ?
O1 B1 O1 Si1 155.35(12) 2 . . . ?
C7 Si1 O1 B1 178.5(2) . . . . ?
C13 Si1 O1 B1 57.0(2) . . . . ?
C1 Si1 O1 B1 -63.1(2) . . . . ?

_refine_diff_density_max         0.695
_refine_diff_density_min         -0.536
_refine_diff_density_rms         0.062

