# Electronic Supplementary Material (ESI) for Polymer Chemistry.
# 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. 
# 
#######################################################################

data_16yzl2h_twin5
_audit_block_doi                 10.5517/ccdc.csd.cc1mpn87
_database_code_depnum_ccdc_archive 'CCDC 1510359'
loop_
_citation_id
_citation_doi
_citation_year
1 10.1039/C7PY01177F 2017
_audit_update_record             
;
2016-10-18 deposited with the CCDC.
2017-11-06 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            'C8 H24 O6 Si5'
_chemical_formula_weight         356.72

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'

_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_H-M_alt        'P 21/n'
_space_group_name_Hall           '-P 2yn'

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

_cell_length_a                   10.043(5)
_cell_length_b                   18.838(9)
_cell_length_c                   11.150(5)
_cell_angle_alpha                90
_cell_angle_beta                 113.174(6)
_cell_angle_gamma                90
_cell_volume                     1939.3(15)
_cell_formula_units_Z            4
_cell_measurement_temperature    200(2)
_cell_measurement_reflns_used    2090
_cell_measurement_theta_min      2.46
_cell_measurement_theta_max      19.52

_exptl_crystal_description       needle
_exptl_crystal_colour            colourless
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.222
_exptl_crystal_F_000             760
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.500
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.050
_exptl_absorpt_coefficient_mu    0.382
_shelx_estimated_absorpt_T_min   0.832
_shelx_estimated_absorpt_T_max   0.981
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.737632
_exptl_absorpt_correction_T_max  0.861817
_exptl_absorpt_process_details   TWINABS
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      200(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'ω scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            13172
_diffrn_reflns_av_unetI/netI     0.1237
_diffrn_reflns_av_R_equivalents  ?
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_theta_min         2.162
_diffrn_reflns_theta_max         22.047
_diffrn_reflns_theta_full        22.047
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measured_fraction_theta_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_point_group_measured_fraction_full 0.999
_reflns_number_total             13172
_reflns_number_gt                7398
_reflns_threshold_expression     'I > 2σ(I)'
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_max     .
_reflns_Friedel_fraction_full    .

_reflns_special_details          
;
 _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    'SHELXT (Sheldrick 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_molecular_graphics    ?
_computing_publication_material  ?
_refine_special_details          
;
 Refined as a 5-component twin.
;
_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.0995P)²] 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         13172
_refine_ls_number_parameters     184
_refine_ls_number_restraints     12
_refine_ls_R_factor_all          0.1533
_refine_ls_R_factor_gt           0.0823
_refine_ls_wR_factor_ref         0.2127
_refine_ls_wR_factor_gt          0.1789
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_restrained_S_all      1.027
_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_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 0.5260(2) 0.37870(15) 0.2522(3) 0.0512(8) Uani 1 1 d . . . . .
Si2 Si 0.3261(3) 0.41333(14) 0.3810(3) 0.0569(9) Uani 1 1 d . . . . .
Si3 Si 0.2513(3) 0.29841(16) 0.1820(3) 0.0545(8) Uani 1 1 d . . . . .
Si4 Si 0.7125(3) 0.44265(15) 0.1298(3) 0.0523(8) Uani 1 1 d . . . . .
Si5 Si 0.8328(3) 0.33398(15) 0.3391(3) 0.0573(9) Uani 1 1 d . . . . .
O1 O 0.4674(6) 0.4239(3) 0.3431(6) 0.0625(19) Uani 1 1 d . . . . .
O2 O 0.4017(6) 0.3237(3) 0.1690(6) 0.0604(19) Uani 1 1 d . . . . .
O3 O 0.5644(6) 0.4307(3) 0.1553(6) 0.0584(18) Uani 1 1 d . . . . .
O4 O 0.6709(6) 0.3373(3) 0.3412(6) 0.0564(18) Uani 1 1 d . . . . .
O5 O 0.2451(6) 0.3416(3) 0.3054(6) 0.0629(18) Uani 1 1 d . . . . .
O6 O 0.8342(6) 0.3917(3) 0.2330(6) 0.066(2) Uani 1 1 d . . . . .
C1 C 0.2067(12) 0.4904(6) 0.3238(14) 0.105(5) Uani 1 1 d . . . . .
H1A H 0.2592 0.5334 0.3660 0.157 Uiso 1 1 calc R U . . .
H1B H 0.1220 0.4842 0.3457 0.157 Uiso 1 1 calc R U . . .
H1C H 0.1750 0.4948 0.2290 0.157 Uiso 1 1 calc R U . . .
C2 C 0.3882(11) 0.4002(6) 0.5566(10) 0.086(4) Uani 1 1 d . . . . .
H2A H 0.3046 0.3925 0.5795 0.129 Uiso 1 1 calc R U . . .
H2B H 0.4416 0.4423 0.6022 0.129 Uiso 1 1 calc R U . . .
H2C H 0.4519 0.3586 0.5825 0.129 Uiso 1 1 calc R U . . .
C3 C 0.0976(11) 0.3209(7) 0.0317(11) 0.094(4) Uani 1 1 d . . . . .
H3A H 0.1100 0.2985 -0.0426 0.141 Uiso 1 1 calc R U . . .
H3B H 0.0924 0.3726 0.0201 0.141 Uiso 1 1 calc R U . . .
H3C H 0.0079 0.3037 0.0369 0.141 Uiso 1 1 calc R U . . .
C4 C 0.2592(11) 0.2031(5) 0.2137(11) 0.076(3) Uani 1 1 d . . . . .
H4A H 0.2396 0.1772 0.1323 0.114 Uiso 1 1 calc R U . . .
H4B H 0.1865 0.1905 0.2483 0.114 Uiso 1 1 calc R U . . .
H4C H 0.3558 0.1906 0.2775 0.114 Uiso 1 1 calc R U . . .
C5 C 0.6794(12) 0.4150(7) -0.0361(11) 0.090(4) Uani 1 1 d . . . . .
H5A H 0.6017 0.4440 -0.0981 0.135 Uiso 1 1 calc R U . . .
H5B H 0.6506 0.3649 -0.0475 0.135 Uiso 1 1 calc R U . . .
H5C H 0.7680 0.4211 -0.0520 0.135 Uiso 1 1 calc R U . . .
C6 C 0.7654(11) 0.5358(6) 0.1600(11) 0.083(4) Uani 1 1 d . . . . .
H6A H 0.8573 0.5431 0.1505 0.124 Uiso 1 1 calc R U . . .
H6B H 0.7768 0.5486 0.2488 0.124 Uiso 1 1 calc R U . . .
H6C H 0.6903 0.5657 0.0971 0.124 Uiso 1 1 calc R U . . .
C7 C 0.8613(15) 0.2459(7) 0.2882(16) 0.139(6) Uani 1 1 d . U . . .
H7A H 0.7949 0.2381 0.1973 0.208 Uiso 1 1 calc R U . . .
H7B H 0.8428 0.2104 0.3440 0.208 Uiso 1 1 calc R U . . .
H7C H 0.9615 0.2415 0.2956 0.208 Uiso 1 1 calc R U . . .
C8 C 0.9684(12) 0.3568(9) 0.4980(12) 0.123(5) Uani 1 1 d . U . . .
H8A H 1.0644 0.3565 0.4946 0.185 Uiso 1 1 calc R U . . .
H8B H 0.9661 0.3220 0.5625 0.185 Uiso 1 1 calc R U . . .
H8C H 0.9482 0.4041 0.5230 0.185 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 O1 1.603(6) . ?
Si1 O4 1.604(6) . ?
Si1 O2 1.607(6) . ?
Si1 O3 1.613(6) . ?
Si2 O5 1.631(7) . ?
Si2 O1 1.644(6) . ?
Si2 C2 1.823(11) . ?
Si2 C1 1.830(11) . ?
Si3 O5 1.621(7) . ?
Si3 O2 1.644(6) . ?
Si3 C4 1.825(10) . ?
Si3 C3 1.827(10) . ?
Si4 O6 1.623(6) . ?
Si4 O3 1.637(6) . ?
Si4 C5 1.822(11) . ?
Si4 C6 1.826(11) . ?
Si5 O6 1.611(6) . ?
Si5 O4 1.637(6) . ?
Si5 C8 1.811(12) . ?
Si5 C7 1.813(13) . ?
C1 H1A 0.9800 . ?
C1 H1B 0.9800 . ?
C1 H1C 0.9800 . ?
C2 H2A 0.9800 . ?
C2 H2B 0.9800 . ?
C2 H2C 0.9800 . ?
C3 H3A 0.9800 . ?
C3 H3B 0.9800 . ?
C3 H3C 0.9800 . ?
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 H6A 0.9800 . ?
C6 H6B 0.9800 . ?
C6 H6C 0.9800 . ?
C7 H7A 0.9800 . ?
C7 H7B 0.9800 . ?
C7 H7C 0.9800 . ?
C8 H8A 0.9800 . ?
C8 H8B 0.9800 . ?
C8 H8C 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
O1 Si1 O4 109.6(4) . . ?
O1 Si1 O2 108.2(3) . . ?
O4 Si1 O2 110.7(4) . . ?
O1 Si1 O3 110.2(4) . . ?
O4 Si1 O3 108.2(3) . . ?
O2 Si1 O3 109.9(4) . . ?
O5 Si2 O1 105.8(3) . . ?
O5 Si2 C2 109.4(5) . . ?
O1 Si2 C2 109.1(4) . . ?
O5 Si2 C1 110.6(5) . . ?
O1 Si2 C1 109.2(5) . . ?
C2 Si2 C1 112.5(6) . . ?
O5 Si3 O2 105.9(3) . . ?
O5 Si3 C4 110.0(5) . . ?
O2 Si3 C4 109.3(4) . . ?
O5 Si3 C3 111.2(5) . . ?
O2 Si3 C3 109.0(4) . . ?
C4 Si3 C3 111.3(5) . . ?
O6 Si4 O3 106.1(3) . . ?
O6 Si4 C5 109.7(5) . . ?
O3 Si4 C5 108.8(4) . . ?
O6 Si4 C6 110.7(4) . . ?
O3 Si4 C6 108.5(4) . . ?
C5 Si4 C6 112.7(5) . . ?
O6 Si5 O4 106.3(3) . . ?
O6 Si5 C8 109.8(5) . . ?
O4 Si5 C8 110.3(5) . . ?
O6 Si5 C7 109.8(6) . . ?
O4 Si5 C7 108.6(5) . . ?
C8 Si5 C7 111.9(7) . . ?
Si1 O1 Si2 131.9(4) . . ?
Si1 O2 Si3 131.9(4) . . ?
Si1 O3 Si4 132.3(4) . . ?
Si1 O4 Si5 132.4(4) . . ?
Si3 O5 Si2 132.6(4) . . ?
Si5 O6 Si4 134.3(4) . . ?
Si2 C1 H1A 109.5 . . ?
Si2 C1 H1B 109.5 . . ?
H1A C1 H1B 109.5 . . ?
Si2 C1 H1C 109.5 . . ?
H1A C1 H1C 109.5 . . ?
H1B C1 H1C 109.5 . . ?
Si2 C2 H2A 109.5 . . ?
Si2 C2 H2B 109.5 . . ?
H2A C2 H2B 109.5 . . ?
Si2 C2 H2C 109.5 . . ?
H2A C2 H2C 109.5 . . ?
H2B C2 H2C 109.5 . . ?
Si3 C3 H3A 109.5 . . ?
Si3 C3 H3B 109.5 . . ?
H3A C3 H3B 109.5 . . ?
Si3 C3 H3C 109.5 . . ?
H3A C3 H3C 109.5 . . ?
H3B C3 H3C 109.5 . . ?
Si3 C4 H4A 109.5 . . ?
Si3 C4 H4B 109.5 . . ?
H4A C4 H4B 109.5 . . ?
Si3 C4 H4C 109.5 . . ?
H4A C4 H4C 109.5 . . ?
H4B C4 H4C 109.5 . . ?
Si4 C5 H5A 109.5 . . ?
Si4 C5 H5B 109.5 . . ?
H5A C5 H5B 109.5 . . ?
Si4 C5 H5C 109.5 . . ?
H5A C5 H5C 109.5 . . ?
H5B C5 H5C 109.5 . . ?
Si4 C6 H6A 109.5 . . ?
Si4 C6 H6B 109.5 . . ?
H6A C6 H6B 109.5 . . ?
Si4 C6 H6C 109.5 . . ?
H6A C6 H6C 109.5 . . ?
H6B C6 H6C 109.5 . . ?
Si5 C7 H7A 109.5 . . ?
Si5 C7 H7B 109.5 . . ?
H7A C7 H7B 109.5 . . ?
Si5 C7 H7C 109.5 . . ?
H7A C7 H7C 109.5 . . ?
H7B C7 H7C 109.5 . . ?
Si5 C8 H8A 109.5 . . ?
Si5 C8 H8B 109.5 . . ?
H8A C8 H8B 109.5 . . ?
Si5 C8 H8C 109.5 . . ?
H8A C8 H8C 109.5 . . ?
H8B C8 H8C 109.5 . . ?

_refine_diff_density_max         0.523
_refine_diff_density_min         -0.325
_refine_diff_density_rms         0.092

