# Supplementary Material (ESI) for Chemical Communications
# This journal is (c) The Royal Society of Chemistry 2006

data_global

_journal_coden_Cambridge         182

_publ_requested_journal          'Chemical Communications'

loop_
_publ_author_name
'Michael Burkart'
'Matthew D. Alexander'
'Antonio DiPasquale'
'Shaun D. Fontaine'
'La Clair, James J.'
'Arnold Rheingold'

_publ_contact_author_name        'Michael Burkart'
_publ_contact_author_address     
;
Department of Chemistry and Biochemistry
University of California, San Diego
9500 Gilman Dr.,
La Jolla
CA
92093-0358
UNITED STATES OF AMERICA
;

_publ_contact_author_email       MBURKART@UCSD.EDU

_publ_section_title              
;
;

# Attachment 'burk02.cif'

data_burk02
_database_code_depnum_ccdc_archive 'CCDC 613942'

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
;
?
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C24 H44 O4 Si'
_chemical_formula_weight         424.68

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'
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'

_symmetry_cell_setting           Orthorhombic
_symmetry_space_group_name_H-M   P2(1)2(1)2(1)

loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, -y, z+1/2'
'x+1/2, -y+1/2, -z'
'-x, y+1/2, -z+1/2'

_cell_length_a                   7.6150(9)
_cell_length_b                   13.9000(17)
_cell_length_c                   23.912(3)
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_volume                     2531.0(5)
_cell_formula_units_Z            4
_cell_measurement_temperature    100(2)
_cell_measurement_reflns_used    9027
_cell_measurement_theta_min      2.81
_cell_measurement_theta_max      28.16

_exptl_crystal_description       needle
_exptl_crystal_colour            colorless
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.07
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.114
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             936
_exptl_absorpt_coefficient_mu    0.117
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.9769
_exptl_absorpt_correction_T_max  0.9918
_exptl_absorpt_process_details   SADABS

_exptl_special_details           
;
?
;

_diffrn_ambient_temperature      100(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  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_reflns_number            4449
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0490
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_theta_min         2.25
_diffrn_reflns_theta_max         25.03
_reflns_number_total             4449
_reflns_number_gt                4159
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       'Bruker SMART'
_computing_cell_refinement       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_solution    SIR-2004
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics    ORTEP-32
_computing_publication_material  WinGX

_refine_special_details          
;
Refinement of F^2^ against ALL reflections. The weighted R-factor wR and
goodness of fit S are based on F^2^, conventional R-factors R are based
on F, with F set to zero for negative F^2^. The threshold expression of
F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is
not relevant to the choice of reflections for refinement. R-factors based
on F^2^ 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/[\s^2^(Fo^2^)+(0.0183P)^2^+1.7857P] where P=(Fo^2^+2Fc^2^)/3'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    constr
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       ?
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(18)
_chemical_absolute_configuration ad
_refine_ls_number_reflns         4449
_refine_ls_number_parameters     271
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0658
_refine_ls_R_factor_gt           0.0604
_refine_ls_wR_factor_ref         0.1037
_refine_ls_wR_factor_gt          0.1021
_refine_ls_goodness_of_fit_ref   1.230
_refine_ls_restrained_S_all      1.230
_refine_ls_shift/su_max          0.000
_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_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
C1 C 0.5605(4) 1.0826(2) 0.70736(12) 0.0157(7) Uani 1 1 d . . .
C2 C 0.6119(4) 1.0547(2) 0.64883(12) 0.0199(7) Uani 1 1 d . . .
H2A H 0.6243 0.9839 0.6465 0.024 Uiso 1 1 calc R . .
H2B H 0.7267 1.0839 0.6395 0.024 Uiso 1 1 calc R . .
C3 C 0.4725(4) 1.0888(2) 0.60672(12) 0.0185(7) Uani 1 1 d . . .
H3A H 0.4671 1.1600 0.6071 0.022 Uiso 1 1 calc R . .
H3B H 0.5068 1.0682 0.5686 0.022 Uiso 1 1 calc R . .
C4 C 0.2930(4) 1.0485(2) 0.62045(12) 0.0167(6) Uani 1 1 d . . .
H4A H 0.2582 1.0720 0.6579 0.020 Uiso 1 1 calc R . .
H4B H 0.3024 0.9775 0.6227 0.020 Uiso 1 1 calc R . .
C5 C 0.1484(4) 1.0735(2) 0.57938(11) 0.0171(6) Uani 1 1 d . . .
H5 H 0.0401 1.0378 0.5907 0.021 Uiso 1 1 calc R . .
C6 C 0.1022(4) 1.1803(2) 0.57520(12) 0.0189(7) Uani 1 1 d . . .
H6 H 0.2091 1.2153 0.5619 0.023 Uiso 1 1 calc R . .
C7 C 0.0501(4) 1.2227(2) 0.63264(12) 0.0188(7) Uani 1 1 d . . .
H7A H -0.0452 1.2701 0.6266 0.023 Uiso 1 1 calc R . .
H7B H 0.0012 1.1701 0.6558 0.023 Uiso 1 1 calc R . .
C8 C 0.1942(4) 1.2715(2) 0.66581(13) 0.0153(7) Uani 1 1 d . . .
C9 C 0.2332(4) 1.2462(2) 0.71780(13) 0.0169(7) Uani 1 1 d . . .
H9 H 0.1659 1.1956 0.7337 0.020 Uiso 1 1 calc R . .
C10 C 0.3728(4) 1.2894(2) 0.75399(13) 0.0179(7) Uani 1 1 d . . .
H10A H 0.3188 1.3122 0.7892 0.022 Uiso 1 1 calc R . .
H10B H 0.4236 1.3459 0.7347 0.022 Uiso 1 1 calc R . .
C11 C 0.5192(4) 1.2187(2) 0.76776(12) 0.0151(6) Uani 1 1 d . . .
H11 H 0.4693 1.1659 0.7913 0.018 Uiso 1 1 calc R . .
C12 C -0.0437(5) 1.1971(2) 0.53248(13) 0.0293(8) Uani 1 1 d . . .
H12A H -0.0105 1.1680 0.4967 0.044 Uiso 1 1 calc R . .
H12B H -0.0613 1.2664 0.5274 0.044 Uiso 1 1 calc R . .
H12C H -0.1528 1.1678 0.5459 0.044 Uiso 1 1 calc R . .
C13 C 0.2825(5) 1.3531(2) 0.63538(14) 0.0260(8) Uani 1 1 d . . .
H13A H 0.3163 1.4030 0.6623 0.039 Uiso 1 1 calc R . .
H13B H 0.2012 1.3804 0.6078 0.039 Uiso 1 1 calc R . .
H13C H 0.3875 1.3291 0.6162 0.039 Uiso 1 1 calc R . .
C14 C 0.6782(4) 1.2617(2) 0.79824(12) 0.0161(7) Uani 1 1 d . . .
H14 H 0.6337 1.2975 0.8316 0.019 Uiso 1 1 calc R . .
C15 C 0.7763(4) 1.3335(2) 0.76095(12) 0.0170(7) Uani 1 1 d . . .
H15A H 0.8235 1.2979 0.7284 0.020 Uiso 1 1 calc R . .
H15B H 0.6898 1.3805 0.7465 0.020 Uiso 1 1 calc R . .
C16 C 0.9248(4) 1.3887(2) 0.78706(14) 0.0200(7) Uani 1 1 d . . .
C17 C 1.0011(5) 1.4660(2) 0.75068(15) 0.0286(8) Uani 1 1 d . . .
H17A H 0.9201 1.5207 0.7492 0.043 Uiso 1 1 calc R . .
H17B H 1.0192 1.4407 0.7129 0.043 Uiso 1 1 calc R . .
H17C H 1.1138 1.4870 0.7662 0.043 Uiso 1 1 calc R . .
C18 C 0.7967(4) 1.1808(2) 0.81910(14) 0.0259(8) Uani 1 1 d . . .
H18A H 0.8415 1.1442 0.7871 0.039 Uiso 1 1 calc R . .
H18B H 0.7294 1.1380 0.8436 0.039 Uiso 1 1 calc R . .
H18C H 0.8955 1.2083 0.8400 0.039 Uiso 1 1 calc R . .
C19 C 0.2159(6) 0.8330(3) 0.54075(15) 0.0456(11) Uani 1 1 d . . .
H19A H 0.3440 0.8346 0.5447 0.068 Uiso 1 1 calc R . .
H19B H 0.1808 0.7726 0.5227 0.068 Uiso 1 1 calc R . .
H19C H 0.1614 0.8372 0.5778 0.068 Uiso 1 1 calc R . .
C20 C -0.1004(4) 0.9306(3) 0.49036(17) 0.0449(11) Uani 1 1 d . . .
H20A H -0.1536 0.9250 0.5275 0.067 Uiso 1 1 calc R . .
H20B H -0.1330 0.8746 0.4677 0.067 Uiso 1 1 calc R . .
H20C H -0.1426 0.9893 0.4721 0.067 Uiso 1 1 calc R . .
C21 C 0.2542(4) 0.9333(2) 0.42752(13) 0.0234(7) Uani 1 1 d . . .
C22 C 0.4500(5) 0.9544(3) 0.43457(15) 0.0360(9) Uani 1 1 d . . .
H22A H 0.5033 0.9051 0.4585 0.054 Uiso 1 1 calc R . .
H22B H 0.4651 1.0178 0.4519 0.054 Uiso 1 1 calc R . .
H22C H 0.5072 0.9539 0.3979 0.054 Uiso 1 1 calc R . .
C23 C 0.2330(5) 0.8344(3) 0.40014(14) 0.0329(9) Uani 1 1 d . . .
H23A H 0.2856 0.8355 0.3627 0.049 Uiso 1 1 calc R . .
H23B H 0.1079 0.8188 0.3971 0.049 Uiso 1 1 calc R . .
H23C H 0.2920 0.7857 0.4230 0.049 Uiso 1 1 calc R . .
C24 C 0.1735(6) 1.0099(3) 0.38916(15) 0.0426(11) Uani 1 1 d . . .
H24A H 0.2317 1.0080 0.3526 0.064 Uiso 1 1 calc R . .
H24B H 0.1893 1.0736 0.4059 0.064 Uiso 1 1 calc R . .
H24C H 0.0479 0.9970 0.3844 0.064 Uiso 1 1 calc R . .
O1 O 0.5064(3) 1.02764(15) 0.74223(9) 0.0283(6) Uani 1 1 d . . .
O2 O 0.5820(3) 1.17736(14) 0.71538(8) 0.0152(5) Uani 1 1 d . . .
O3 O 0.9793(3) 1.37518(17) 0.83357(9) 0.0272(5) Uani 1 1 d . . .
O4 O 0.1993(3) 1.04035(14) 0.52462(8) 0.0179(5) Uani 1 1 d . . .
Si1 Si 0.14325(12) 0.93591(6) 0.49733(4) 0.0215(2) Uani 1 1 d . . .

loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_23
_atom_site_aniso_U_13
_atom_site_aniso_U_12
C1 0.0090(15) 0.0122(16) 0.0258(17) -0.0035(13) -0.0047(13) 0.0019(12)
C2 0.0168(16) 0.0157(16) 0.0273(17) -0.0071(14) -0.0022(13) 0.0001(14)
C3 0.0161(16) 0.0189(17) 0.0205(16) -0.0021(13) 0.0001(13) 0.0001(13)
C4 0.0192(15) 0.0128(16) 0.0182(15) 0.0009(13) -0.0030(13) 0.0006(13)
C5 0.0165(15) 0.0176(16) 0.0172(15) -0.0032(13) 0.0003(13) -0.0008(14)
C6 0.0169(17) 0.0179(16) 0.0220(16) 0.0003(14) -0.0007(13) 0.0000(13)
C7 0.0129(16) 0.0204(17) 0.0231(17) -0.0007(13) -0.0020(13) 0.0018(13)
C8 0.0111(15) 0.0098(15) 0.0250(16) -0.0032(13) 0.0051(13) 0.0052(12)
C9 0.0129(15) 0.0125(15) 0.0252(17) -0.0028(13) 0.0012(13) -0.0034(13)
C10 0.0161(16) 0.0126(15) 0.0251(17) -0.0057(13) 0.0002(14) 0.0008(13)
C11 0.0179(15) 0.0138(15) 0.0136(14) -0.0034(12) 0.0000(12) 0.0007(13)
C12 0.035(2) 0.0268(19) 0.0264(19) -0.0048(15) -0.0081(16) 0.0082(17)
C13 0.0282(19) 0.0208(18) 0.0291(19) 0.0026(15) -0.0006(16) 0.0013(15)
C14 0.0153(16) 0.0159(16) 0.0172(15) -0.0008(12) -0.0012(12) 0.0004(13)
C15 0.0168(16) 0.0138(16) 0.0205(15) -0.0009(13) -0.0033(13) 0.0005(13)
C16 0.0176(17) 0.0152(17) 0.0271(18) -0.0032(14) 0.0016(14) 0.0059(13)
C17 0.0240(18) 0.0201(18) 0.042(2) 0.0024(15) -0.0008(16) -0.0042(15)
C18 0.0266(19) 0.0194(18) 0.0318(19) 0.0019(15) -0.0046(16) 0.0041(15)
C19 0.086(3) 0.026(2) 0.0247(19) 0.0007(17) -0.003(2) 0.001(2)
C20 0.028(2) 0.046(2) 0.061(3) -0.026(2) 0.0088(19) -0.0145(19)
C21 0.0220(17) 0.0246(18) 0.0235(16) -0.0046(15) -0.0019(14) 0.0072(16)
C22 0.033(2) 0.039(2) 0.036(2) -0.0176(18) 0.0117(17) -0.0052(18)
C23 0.028(2) 0.042(2) 0.0282(19) -0.0152(17) -0.0056(16) 0.0052(18)
C24 0.057(3) 0.044(2) 0.027(2) 0.0082(17) 0.0030(19) 0.017(2)
O1 0.0439(15) 0.0136(11) 0.0274(13) 0.0006(10) 0.0023(12) -0.0016(11)
O2 0.0184(11) 0.0101(10) 0.0172(10) -0.0036(9) 0.0022(9) -0.0010(9)
O3 0.0229(13) 0.0322(13) 0.0264(13) -0.0031(11) -0.0041(11) -0.0048(11)
O4 0.0188(11) 0.0203(12) 0.0146(10) -0.0035(9) 0.0019(9) -0.0002(9)
Si1 0.0236(4) 0.0185(4) 0.0224(4) -0.0052(4) 0.0008(4) -0.0006(4)

_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
C1 O1 1.204(4) . ?
C1 O2 1.341(3) . ?
C1 C2 1.504(4) . ?
C2 C3 1.538(4) . ?
C2 H2A 0.9900 . ?
C2 H2B 0.9900 . ?
C3 C4 1.513(4) . ?
C3 H3A 0.9900 . ?
C3 H3B 0.9900 . ?
C4 C5 1.516(4) . ?
C4 H4A 0.9900 . ?
C4 H4B 0.9900 . ?
C5 O4 1.441(3) . ?
C5 C6 1.528(4) . ?
C5 H5 1.0000 . ?
C6 C12 1.527(4) . ?
C6 C7 1.547(4) . ?
C6 H6 1.0000 . ?
C7 C8 1.514(4) . ?
C7 H7A 0.9900 . ?
C7 H7B 0.9900 . ?
C8 C9 1.326(4) . ?
C8 C13 1.507(4) . ?
C9 C10 1.496(4) . ?
C9 H9 0.9500 . ?
C10 C11 1.522(4) . ?
C10 H10A 0.9900 . ?
C10 H10B 0.9900 . ?
C11 O2 1.459(3) . ?
C11 C14 1.534(4) . ?
C11 H11 1.0000 . ?
C12 H12A 0.9800 . ?
C12 H12B 0.9800 . ?
C12 H12C 0.9800 . ?
C13 H13A 0.9800 . ?
C13 H13B 0.9800 . ?
C13 H13C 0.9800 . ?
C14 C18 1.525(4) . ?
C14 C15 1.533(4) . ?
C14 H14 1.0000 . ?
C15 C16 1.503(4) . ?
C15 H15A 0.9900 . ?
C15 H15B 0.9900 . ?
C16 O3 1.202(4) . ?
C16 C17 1.499(4) . ?
C17 H17A 0.9800 . ?
C17 H17B 0.9800 . ?
C17 H17C 0.9800 . ?
C18 H18A 0.9800 . ?
C18 H18B 0.9800 . ?
C18 H18C 0.9800 . ?
C19 Si1 1.852(4) . ?
C19 H19A 0.9800 . ?
C19 H19B 0.9800 . ?
C19 H19C 0.9800 . ?
C20 Si1 1.864(4) . ?
C20 H20A 0.9800 . ?
C20 H20B 0.9800 . ?
C20 H20C 0.9800 . ?
C21 C22 1.529(5) . ?
C21 C23 1.531(5) . ?
C21 C24 1.534(5) . ?
C21 Si1 1.871(3) . ?
C22 H22A 0.9800 . ?
C22 H22B 0.9800 . ?
C22 H22C 0.9800 . ?
C23 H23A 0.9800 . ?
C23 H23B 0.9800 . ?
C23 H23C 0.9800 . ?
C24 H24A 0.9800 . ?
C24 H24B 0.9800 . ?
C24 H24C 0.9800 . ?
O4 Si1 1.648(2) . ?

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
O1 C1 O2 124.5(3) . . ?
O1 C1 C2 124.7(3) . . ?
O2 C1 C2 110.8(3) . . ?
C1 C2 C3 110.5(2) . . ?
C1 C2 H2A 109.6 . . ?
C3 C2 H2A 109.6 . . ?
C1 C2 H2B 109.6 . . ?
C3 C2 H2B 109.6 . . ?
H2A C2 H2B 108.1 . . ?
C4 C3 C2 111.5(2) . . ?
C4 C3 H3A 109.3 . . ?
C2 C3 H3A 109.3 . . ?
C4 C3 H3B 109.3 . . ?
C2 C3 H3B 109.3 . . ?
H3A C3 H3B 108.0 . . ?
C3 C4 C5 115.5(2) . . ?
C3 C4 H4A 108.4 . . ?
C5 C4 H4A 108.4 . . ?
C3 C4 H4B 108.4 . . ?
C5 C4 H4B 108.4 . . ?
H4A C4 H4B 107.5 . . ?
O4 C5 C4 108.6(2) . . ?
O4 C5 C6 108.3(2) . . ?
C4 C5 C6 115.6(2) . . ?
O4 C5 H5 108.0 . . ?
C4 C5 H5 108.0 . . ?
C6 C5 H5 108.0 . . ?
C12 C6 C5 111.1(2) . . ?
C12 C6 C7 110.4(2) . . ?
C5 C6 C7 111.8(2) . . ?
C12 C6 H6 107.8 . . ?
C5 C6 H6 107.8 . . ?
C7 C6 H6 107.8 . . ?
C8 C7 C6 116.8(3) . . ?
C8 C7 H7A 108.1 . . ?
C6 C7 H7A 108.1 . . ?
C8 C7 H7B 108.1 . . ?
C6 C7 H7B 108.1 . . ?
H7A C7 H7B 107.3 . . ?
C9 C8 C13 123.5(3) . . ?
C9 C8 C7 122.4(3) . . ?
C13 C8 C7 114.1(3) . . ?
C8 C9 C10 126.5(3) . . ?
C8 C9 H9 116.7 . . ?
C10 C9 H9 116.7 . . ?
C9 C10 C11 112.7(2) . . ?
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 . . ?
O2 C11 C10 108.0(2) . . ?
O2 C11 C14 107.6(2) . . ?
C10 C11 C14 115.4(2) . . ?
O2 C11 H11 108.5 . . ?
C10 C11 H11 108.5 . . ?
C14 C11 H11 108.5 . . ?
C6 C12 H12A 109.5 . . ?
C6 C12 H12B 109.5 . . ?
H12A C12 H12B 109.5 . . ?
C6 C12 H12C 109.5 . . ?
H12A C12 H12C 109.5 . . ?
H12B C12 H12C 109.5 . . ?
C8 C13 H13A 109.5 . . ?
C8 C13 H13B 109.5 . . ?
H13A C13 H13B 109.5 . . ?
C8 C13 H13C 109.5 . . ?
H13A C13 H13C 109.5 . . ?
H13B C13 H13C 109.5 . . ?
C18 C14 C15 112.4(2) . . ?
C18 C14 C11 109.6(2) . . ?
C15 C14 C11 111.2(2) . . ?
C18 C14 H14 107.8 . . ?
C15 C14 H14 107.8 . . ?
C11 C14 H14 107.8 . . ?
C16 C15 C14 117.2(3) . . ?
C16 C15 H15A 108.0 . . ?
C14 C15 H15A 108.0 . . ?
C16 C15 H15B 108.0 . . ?
C14 C15 H15B 108.0 . . ?
H15A C15 H15B 107.2 . . ?
O3 C16 C17 121.0(3) . . ?
O3 C16 C15 124.4(3) . . ?
C17 C16 C15 114.6(3) . . ?
C16 C17 H17A 109.5 . . ?
C16 C17 H17B 109.5 . . ?
H17A C17 H17B 109.5 . . ?
C16 C17 H17C 109.5 . . ?
H17A C17 H17C 109.5 . . ?
H17B C17 H17C 109.5 . . ?
C14 C18 H18A 109.5 . . ?
C14 C18 H18B 109.5 . . ?
H18A C18 H18B 109.5 . . ?
C14 C18 H18C 109.5 . . ?
H18A C18 H18C 109.5 . . ?
H18B C18 H18C 109.5 . . ?
Si1 C19 H19A 109.5 . . ?
Si1 C19 H19B 109.5 . . ?
H19A C19 H19B 109.5 . . ?
Si1 C19 H19C 109.5 . . ?
H19A C19 H19C 109.5 . . ?
H19B C19 H19C 109.5 . . ?
Si1 C20 H20A 109.5 . . ?
Si1 C20 H20B 109.5 . . ?
H20A C20 H20B 109.5 . . ?
Si1 C20 H20C 109.5 . . ?
H20A C20 H20C 109.5 . . ?
H20B C20 H20C 109.5 . . ?
C22 C21 C23 108.8(3) . . ?
C22 C21 C24 108.9(3) . . ?
C23 C21 C24 109.0(3) . . ?
C22 C21 Si1 109.8(2) . . ?
C23 C21 Si1 110.6(2) . . ?
C24 C21 Si1 109.8(2) . . ?
C21 C22 H22A 109.5 . . ?
C21 C22 H22B 109.5 . . ?
H22A C22 H22B 109.5 . . ?
C21 C22 H22C 109.5 . . ?
H22A C22 H22C 109.5 . . ?
H22B C22 H22C 109.5 . . ?
C21 C23 H23A 109.5 . . ?
C21 C23 H23B 109.5 . . ?
H23A C23 H23B 109.5 . . ?
C21 C23 H23C 109.5 . . ?
H23A C23 H23C 109.5 . . ?
H23B C23 H23C 109.5 . . ?
C21 C24 H24A 109.5 . . ?
C21 C24 H24B 109.5 . . ?
H24A C24 H24B 109.5 . . ?
C21 C24 H24C 109.5 . . ?
H24A C24 H24C 109.5 . . ?
H24B C24 H24C 109.5 . . ?
C1 O2 C11 118.0(2) . . ?
C5 O4 Si1 124.88(19) . . ?
O4 Si1 C19 112.41(15) . . ?
O4 Si1 C20 109.16(15) . . ?
C19 Si1 C20 108.5(2) . . ?
O4 Si1 C21 104.68(13) . . ?
C19 Si1 C21 110.49(17) . . ?
C20 Si1 C21 111.64(17) . . ?

_diffrn_measured_fraction_theta_max 0.998
_diffrn_reflns_theta_full        25.00
_diffrn_measured_fraction_theta_full 0.998
_refine_diff_density_max         0.311
_refine_diff_density_min         -0.247
_refine_diff_density_rms         0.053