#------------------------------------------------------------------------------
#$Date: 2019-11-07 23:59:27 +0200 (Thu, 07 Nov 2019) $
#$Revision: 224155 $
#$URL: file:///home/coder/svn-repositories/cod/cif/7/04/83/7048301.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_7048301
loop_
_publ_author_name
'Sato, Naoto'
'Tochigi, Kazuma'
'Kuroda, Yoshiyuki'
'Wada, Hiroaki'
'Shimojima, Atsushi'
'Kuroda, Kazuyuki'
_publ_section_title
;
 Synthesis and crystal structure of double-three ring (D3R)-type cage
 siloxanes modified with dimethylsilanol groups.
;
_journal_issue                   6
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1969
_journal_page_last               1975
_journal_paper_doi               10.1039/c8dt04244f
_journal_volume                  48
_journal_year                    2019
_chemical_formula_moiety         'C15 H48 O18 Si12'
_chemical_formula_sum            'C15 H48 O18 Si12'
_chemical_formula_weight         853.56
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_update_record
;
2018-10-24 deposited with the CCDC.
2018-12-03 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 101.415(7)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   19.8884(4)
_cell_length_b                   14.1218(3)
_cell_length_c                   16.2519(3)
_cell_measurement_reflns_used    21099
_cell_measurement_temperature    123
_cell_measurement_theta_max      68.38
_cell_measurement_theta_min      3.87
_cell_volume                     4474.22(19)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO (Rigaku, ????)'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'CrystalStructure 4.2.4'
_computing_publication_material  'CrystalStructure 4.2.4 (Rigaku, 2016)'
_computing_structure_refinement  'SHELXL Version 2014/6 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT Version 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      123
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       ω
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0746
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            25058
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        67.687
_diffrn_reflns_theta_max         68.243
_diffrn_reflns_theta_min         3.865
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.802
_exptl_absorpt_correction_T_max  0.467
_exptl_absorpt_correction_T_min  0.293
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'NUMABS (Rigaku, 1999)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.267
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1800.00
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.74
_refine_diff_density_min         -0.50
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.098
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     232
_refine_ls_number_reflns         4061
_refine_ls_number_restraints     384
_refine_ls_R_factor_all          0.1058
_refine_ls_R_factor_gt           0.0831
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[σ²(Fo²)+(0.0949P)²+27.5000P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2268
_refine_ls_wR_factor_ref         0.2426
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3019
_reflns_number_total             4061
_reflns_threshold_expression     F²>2.0σ(F²)
_cod_data_source_file            c8dt04244f2.cif
_cod_data_source_block           6
_cod_depositor_comments
'Adding full bibliography for 7048300--7048301.cif.'
_cod_original_cell_volume        4474.2(2)
_cod_database_code               7048301
_shelxl_version_number           2014/6
loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x, y, -z+1/2'
'x+1/2, y+1/2, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y, z-1/2'
'-x+1/2, -y+1/2, -z'
'x+1/2, -y+1/2, z-1/2'
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 0.43857(8) 0.40831(12) 0.67331(9) 0.0476(4) Uani 1 1 d . U . . .
Si2 Si 0.48842(9) 0.22549(12) 0.61414(10) 0.0542(5) Uani 1 1 d . U . . .
Si3 Si 0.34409(8) 0.49650(14) 0.51867(10) 0.0575(5) Uani 1 1 d . U . . .
Si4 Si 0.61128(9) 0.22706(14) 0.76552(11) 0.0601(5) Uani 1 1 d . U . . .
Si5 Si 0.55122(12) 0.19666(16) 0.45883(13) 0.0768(6) Uani 1 1 d . U . . .
O7 O 0.5568(2) 0.1968(3) 0.6810(3) 0.0599(11) Uani 1 1 d . U . . .
O8 O 0.3900(2) 0.4798(3) 0.6122(2) 0.0633(11) Uani 1 1 d . U . . .
O9 O 0.4980(2) 0.1960(3) 0.5216(3) 0.0678(12) Uani 1 1 d . U . . .
O10 O 0.3080(2) 0.6008(4) 0.5191(3) 0.0797(14) Uani 1 1 d . U . . .
H10 H 0.2849 0.6026 0.5570 0.119 Uiso 1 1 calc R U . . .
O11 O 0.6247(3) 0.2429(4) 0.5076(3) 0.0814(14) Uani 1 1 d . U . . .
H11 H 0.6176 0.2969 0.5260 0.122 Uiso 1 1 calc R U . . .
O12 O 0.6874(2) 0.1994(4) 0.7547(3) 0.0833(15) Uani 1 1 d . U . . .
O13 O 0.7163(3) 0.1433(5) 0.6118(3) 0.107(2) Uani 1 1 d . U . . .
H13A H 0.6799 0.1749 0.5993 0.161 Uiso 0.657(10) 1 calc R U P A 1
H13B H 0.6753 0.1599 0.5948 0.161 Uiso 0.343(10) 1 calc R U P A 2
O14 O 0.39182(18) 0.3415(3) 0.7209(2) 0.0526(10) Uani 1 1 d . U . . .
O15 O 0.47758(18) 0.3398(3) 0.6176(2) 0.0474(9) Uani 1 1 d . U . . .
C16 C 0.4135(4) 0.1696(5) 0.6431(4) 0.0646(17) Uani 1 1 d . U . . .
H16A H 0.4237 0.1020 0.6562 0.078 Uiso 1 1 calc R U . . .
H16B H 0.3744 0.1726 0.5948 0.078 Uiso 1 1 calc R U . . .
C17 C 0.4004(4) 0.4988(6) 0.4421(4) 0.075(2) Uani 1 1 d . U . . .
H17A H 0.3729 0.5089 0.3857 0.113 Uiso 1 1 calc R U . . .
H17B H 0.4337 0.5504 0.4559 0.113 Uiso 1 1 calc R U . . .
H17C H 0.4249 0.4384 0.4437 0.113 Uiso 1 1 calc R U . . .
C18 C 0.2778(4) 0.4069(7) 0.4991(5) 0.099(3) Uani 1 1 d . U . . .
H18A H 0.2496 0.4161 0.4430 0.149 Uiso 1 1 calc R U . . .
H18B H 0.2989 0.3440 0.5026 0.149 Uiso 1 1 calc R U . . .
H18C H 0.2488 0.4122 0.5412 0.149 Uiso 1 1 calc R U . . .
C19 C 0.5170(5) 0.2771(7) 0.3717(5) 0.105(3) Uani 1 1 d . U . . .
H19A H 0.5484 0.2790 0.3323 0.157 Uiso 1 1 calc R U . . .
H19B H 0.4720 0.2544 0.3426 0.157 Uiso 1 1 calc R U . . .
H19C H 0.5123 0.3408 0.3938 0.157 Uiso 1 1 calc R U . . .
C21 C 0.5658(7) 0.0769(8) 0.4301(8) 0.148(4) Uani 1 1 d . U . . .
H21A H 0.5981 0.0763 0.3918 0.223 Uiso 1 1 calc R U . . .
H21B H 0.5848 0.0404 0.4806 0.223 Uiso 1 1 calc R U . . .
H21C H 0.5222 0.0485 0.4021 0.223 Uiso 1 1 calc R U . . .
C23 C 0.5000 0.4755(6) 0.7500 0.0508(18) Uani 1 2 d S TU P . .
H23A H 0.4737 0.5171 0.7812 0.061 Uiso 0.5 1 calc R U P . .
H23B H 0.5263 0.5171 0.7188 0.061 Uiso 0.5 1 calc R U P . .
Si6A Si 0.7370(2) 0.1306(4) 0.7144(2) 0.0821(17) Uani 0.657(10) 1 d . U P A 1
C20A C 0.8262(7) 0.1760(13) 0.7525(12) 0.100(4) Uani 0.657(10) 1 d . U P A 1
H20A H 0.8587 0.1365 0.7297 0.150 Uiso 0.657(10) 1 calc R U P A 1
H20B H 0.8293 0.2415 0.7337 0.150 Uiso 0.657(10) 1 calc R U P A 1
H20C H 0.8373 0.1737 0.8139 0.150 Uiso 0.657(10) 1 calc R U P A 1
C22A C 0.7244(8) 0.0066(11) 0.7424(8) 0.106(4) Uani 0.657(10) 1 d . U P A 1
H22A H 0.7549 -0.0342 0.7175 0.159 Uiso 0.657(10) 1 calc R U P A 1
H22B H 0.7351 -0.0003 0.8036 0.159 Uiso 0.657(10) 1 calc R U P A 1
H22C H 0.6766 -0.0117 0.7210 0.159 Uiso 0.657(10) 1 calc R U P A 1
Si6B Si 0.7501(4) 0.2028(13) 0.7047(6) 0.113(3) Uani 0.343(10) 1 d . U P A 2
C20B C 0.8182(17) 0.119(3) 0.752(2) 0.115(9) Uani 0.343(10) 1 d . U P A 2
H20D H 0.8558 0.1216 0.7208 0.173 Uiso 0.343(10) 1 calc R U P A 2
H20E H 0.8355 0.1357 0.8105 0.173 Uiso 0.343(10) 1 calc R U P A 2
H20F H 0.7994 0.0544 0.7485 0.173 Uiso 0.343(10) 1 calc R U P A 2
C22B C 0.7749(17) 0.324(3) 0.693(2) 0.148(9) Uani 0.343(10) 1 d . U P A 2
H22D H 0.8129 0.3261 0.6632 0.222 Uiso 0.343(10) 1 calc R U P A 2
H22E H 0.7358 0.3595 0.6619 0.222 Uiso 0.343(10) 1 calc R U P A 2
H22F H 0.7896 0.3525 0.7491 0.222 Uiso 0.343(10) 1 calc R U P A 2
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0181 0.0091
;
International Tables for Crystallography
(Vol. C, Tables 4.2.6.8 and 6.1.1.4)
;
H H 0.0000 0.0000
;
International Tables for Crystallography
(Vol. C, Table 6.1.1.4)
;
O O 0.0492 0.0322
;
International Tables for Crystallography
(Vol. C, Tables 4.2.6.8 and 6.1.1.4)
;
Si Si 0.2541 0.3302
;
International Tables for Crystallography
(Vol. C, Tables 4.2.6.8 and 6.1.1.4)
;
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
O8 Si1 O15 109.0(2) . .
O8 Si1 O14 109.3(2) . .
O15 Si1 O14 107.5(2) . .
O8 Si1 C23 109.6(3) . .
O15 Si1 C23 111.16(19) . .
O14 Si1 C23 110.20(19) . .
O9 Si2 O7 108.9(2) . .
O9 Si2 O15 109.3(2) . .
O7 Si2 O15 108.9(2) . .
O9 Si2 C16 112.5(3) . .
O7 Si2 C16 109.9(3) . .
O15 Si2 C16 107.4(3) . .
O8 Si3 O10 107.0(3) . .
O8 Si3 C18 108.5(3) . .
O10 Si3 C18 108.9(4) . .
O8 Si3 C17 109.3(3) . .
O10 Si3 C17 108.3(3) . .
C18 Si3 C17 114.6(4) . .
O12 Si4 O7 109.1(3) . .
O12 Si4 O14 108.5(3) . 2_656
O7 Si4 O14 109.7(2) . 2_656
O12 Si4 C16 112.9(3) . 2_656
O7 Si4 C16 109.0(3) . 2_656
O14 Si4 C16 107.7(3) 2_656 2_656
O9 Si5 O11 109.2(3) . .
O9 Si5 C21 108.6(4) . .
O11 Si5 C21 109.0(5) . .
O9 Si5 C19 107.6(4) . .
O11 Si5 C19 106.4(4) . .
C21 Si5 C19 115.9(6) . .
Si2 O7 Si4 146.3(3) . .
Si1 O8 Si3 146.1(3) . .
Si2 O9 Si5 143.7(3) . .
Si3 O10 H10 109.5 . .
Si5 O11 H11 109.5 . .
Si4 O12 Si6A 149.0(5) . .
Si4 O12 Si6B 152.2(5) . .
Si6A O13 H13A 109.5 . .
Si6B O13 H13B 109.5 . .
Si1 O14 Si4 132.8(2) . 2_656
Si1 O15 Si2 133.6(2) . .
Si2 C16 Si4 112.3(3) . 2_656
Si2 C16 H16A 109.2 . .
Si4 C16 H16A 109.2 2_656 .
Si2 C16 H16B 109.2 . .
Si4 C16 H16B 109.2 2_656 .
H16A C16 H16B 107.9 . .
Si3 C17 H17A 109.5 . .
Si3 C17 H17B 109.5 . .
H17A C17 H17B 109.5 . .
Si3 C17 H17C 109.5 . .
H17A C17 H17C 109.5 . .
H17B C17 H17C 109.5 . .
Si3 C18 H18A 109.5 . .
Si3 C18 H18B 109.5 . .
H18A C18 H18B 109.5 . .
Si3 C18 H18C 109.5 . .
H18A C18 H18C 109.5 . .
H18B C18 H18C 109.5 . .
Si5 C19 H19A 109.5 . .
Si5 C19 H19B 109.5 . .
H19A C19 H19B 109.5 . .
Si5 C19 H19C 109.5 . .
H19A C19 H19C 109.5 . .
H19B C19 H19C 109.5 . .
Si5 C21 H21A 109.5 . .
Si5 C21 H21B 109.5 . .
H21A C21 H21B 109.5 . .
Si5 C21 H21C 109.5 . .
H21A C21 H21C 109.5 . .
H21B C21 H21C 109.5 . .
Si1 C23 Si1 117.5(4) . 2_656
Si1 C23 H23A 107.9 . .
Si1 C23 H23A 107.9 2_656 .
Si1 C23 H23B 107.9 . .
Si1 C23 H23B 107.9 2_656 .
H23A C23 H23B 107.2 . .
O12 Si6A O13 107.2(3) . .
O12 Si6A C22A 110.4(6) . .
O13 Si6A C22A 109.6(6) . .
O12 Si6A C20A 106.0(7) . .
O13 Si6A C20A 109.2(7) . .
C22A Si6A C20A 114.2(7) . .
Si6A C20A H20A 109.5 . .
Si6A C20A H20B 109.5 . .
H20A C20A H20B 109.5 . .
Si6A C20A H20C 109.5 . .
H20A C20A H20C 109.5 . .
H20B C20A H20C 109.5 . .
Si6A C22A H22A 109.5 . .
Si6A C22A H22B 109.5 . .
H22A C22A H22B 109.5 . .
Si6A C22A H22C 109.5 . .
H22A C22A H22C 109.5 . .
H22B C22A H22C 109.5 . .
O12 Si6B O13 102.5(7) . .
O12 Si6B C22B 109.5(13) . .
O13 Si6B C22B 115.9(14) . .
O12 Si6B C20B 110.4(14) . .
O13 Si6B C20B 100.0(15) . .
C22B Si6B C20B 117.3(19) . .
Si6B C20B H20D 109.5 . .
Si6B C20B H20E 109.5 . .
H20D C20B H20E 109.5 . .
Si6B C20B H20F 109.5 . .
H20D C20B H20F 109.5 . .
H20E C20B H20F 109.5 . .
Si6B C22B H22D 109.5 . .
Si6B C22B H22E 109.5 . .
H22D C22B H22E 109.5 . .
Si6B C22B H22F 109.5 . .
H22D C22B H22F 109.5 . .
H22E C22B H22F 109.5 . .
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Si1 O8 1.599(4) .
Si1 O15 1.624(4) .
Si1 O14 1.624(4) .
Si1 C23 1.829(5) .
Si2 O9 1.608(4) .
Si2 O7 1.615(5) .
Si2 O15 1.631(4) .
Si2 C16 1.829(6) .
Si3 O8 1.628(4) .
Si3 O10 1.639(5) .
Si3 C18 1.810(8) .
Si3 C17 1.833(6) .
Si4 O12 1.606(4) .
Si4 O7 1.629(5) .
Si4 O14 1.634(5) 2_656
Si4 C16 1.843(6) 2_656
Si5 O9 1.609(4) .
Si5 O11 1.654(6) .
Si5 C21 1.794(10) .
Si5 C19 1.837(9) .
O10 H10 0.8400 .
O11 H11 0.8400 .
O12 Si6A 1.612(5) .
O12 Si6B 1.619(9) .
O13 Si6A 1.646(6) .
O13 Si6B 1.743(14) .
O13 H13A 0.8400 .
O13 H13B 0.8400 .
O14 Si4 1.634(5) 2_656
C16 Si4 1.843(6) 2_656
C16 H16A 0.9900 .
C16 H16B 0.9900 .
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 H19A 0.9800 .
C19 H19B 0.9800 .
C19 H19C 0.9800 .
C21 H21A 0.9800 .
C21 H21B 0.9800 .
C21 H21C 0.9800 .
C23 Si1 1.829(5) 2_656
C23 H23A 0.9900 .
C23 H23B 0.9900 .
Si6A C22A 1.839(16) .
Si6A C20A 1.872(18) .
C20A H20A 0.9800 .
C20A H20B 0.9800 .
C20A H20C 0.9800 .
C22A H22A 0.9800 .
C22A H22B 0.9800 .
C22A H22C 0.9800 .
Si6B C22B 1.80(4) .
Si6B C20B 1.85(4) .
C20B H20D 0.9800 .
C20B H20E 0.9800 .
C20B H20F 0.9800 .
C22B H22D 0.9800 .
C22B H22E 0.9800 .
C22B H22F 0.9800 .
loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_site_symmetry_A
_geom_hbond_distance_DA
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_angle_DHA
_geom_hbond_publ_flag
O10 H10 O13 3_455 2.654(8) 0.840 1.861 157.0 no
O11 H11 O10 5_666 2.660(8) 0.840 2.289 107.1 no
O13 H13A O11 . 2.635(7) 0.840 1.924 141.7 no
O13 H13B O11 . 2.635(7) 0.840 1.958 137.0 no
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_4
O9 Si2 O7 Si4 140.6(5) . .
O15 Si2 O7 Si4 21.5(6) . .
C16 Si2 O7 Si4 -95.8(5) . .
O12 Si4 O7 Si2 -140.0(5) . .
O14 Si4 O7 Si2 -21.3(6) 2_656 .
C16 Si4 O7 Si2 96.3(5) 2_656 .
O15 Si1 O8 Si3 28.8(6) . .
O14 Si1 O8 Si3 -88.5(6) . .
C23 Si1 O8 Si3 150.6(5) . .
O10 Si3 O8 Si1 177.2(5) . .
C18 Si3 O8 Si1 59.8(7) . .
C17 Si3 O8 Si1 -65.7(6) . .
O7 Si2 O9 Si5 -43.6(6) . .
O15 Si2 O9 Si5 75.3(6) . .
C16 Si2 O9 Si5 -165.6(5) . .
O11 Si5 O9 Si2 1.9(7) . .
C21 Si5 O9 Si2 120.6(7) . .
C19 Si5 O9 Si2 -113.2(6) . .
O7 Si4 O12 Si6A -30.0(8) . .
O14 Si4 O12 Si6A -149.4(7) 2_656 .
C16 Si4 O12 Si6A 91.4(8) 2_656 .
O7 Si4 O12 Si6B 54.7(15) . .
O14 Si4 O12 Si6B -64.7(15) 2_656 .
C16 Si4 O12 Si6B 176.1(15) 2_656 .
O8 Si1 O14 Si4 130.4(3) . 2_656
O15 Si1 O14 Si4 12.2(4) . 2_656
C23 Si1 O14 Si4 -109.0(4) . 2_656
O8 Si1 O15 Si2 -130.7(3) . .
O14 Si1 O15 Si2 -12.3(4) . .
C23 Si1 O15 Si2 108.4(4) . .
O9 Si2 O15 Si1 152.6(3) . .
O7 Si2 O15 Si1 -88.5(4) . .
C16 Si2 O15 Si1 30.4(4) . .
O9 Si2 C16 Si4 -164.3(3) . 2_656
O7 Si2 C16 Si4 74.2(4) . 2_656
O15 Si2 C16 Si4 -44.0(5) . 2_656
O8 Si1 C23 Si1 -179.74(19) . 2_656
O15 Si1 C23 Si1 -59.16(17) . 2_656
O14 Si1 C23 Si1 59.94(17) . 2_656
Si4 O12 Si6A O13 63.4(9) . .
Si4 O12 Si6A C22A -55.9(9) . .
Si4 O12 Si6A C20A 179.9(8) . .
Si4 O12 Si6B O13 -65.5(19) . .
Si4 O12 Si6B C22B 58(2) . .
Si4 O12 Si6B C20B -171.2(16) . .
