# Electronic Supplementary Material (ESI) for Chemical Science.
# This journal is © The Royal Society of Chemistry 2016

####################################################################### 
# 
# 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_exp_800
_database_code_depnum_ccdc_archive 'CCDC 1470541'
_audit_update_record             
;
2016-03-24 deposited with the CCDC.
2016-05-27 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            'C5 H20 S2 Si5'
_chemical_formula_weight         284.78

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 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'
Si Si 0.2541 0.3302 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
S S 0.3331 0.5567 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_H-M_alt        'P -1'
_space_group_name_Hall           '-P 1'

_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, -y, -z'

_cell_length_a                   9.1567(3)
_cell_length_b                   10.4987(3)
_cell_length_c                   16.4783(4)
_cell_angle_alpha                74.597(2)
_cell_angle_beta                 82.414(2)
_cell_angle_gamma                81.243(2)
_cell_volume                     1502.42(7)
_cell_formula_units_Z            7
_cell_measurement_temperature    293(2)
_cell_measurement_reflns_used    ?
_cell_measurement_theta_min      ?
_cell_measurement_theta_max      ?

_exptl_crystal_description       ?
_exptl_crystal_colour            white
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    2.203
_exptl_crystal_F_000             1064
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          ?
_exptl_crystal_size_mid          ?
_exptl_crystal_size_min          ?
_exptl_absorpt_coefficient_mu    11.766
_shelx_estimated_absorpt_T_min   ?
_shelx_estimated_absorpt_T_max   ?
_exptl_absorpt_correction_type   ?
_exptl_absorpt_correction_T_min  ?
_exptl_absorpt_correction_T_max  ?
_exptl_absorpt_process_details   ?
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      293(2)
_diffrn_radiation_wavelength     1.54184
_diffrn_radiation_type           CuK\a
_diffrn_source                   ?
_diffrn_measurement_device_type  ?
_diffrn_measurement_method       ?
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            46706
_diffrn_reflns_av_unetI/netI     0.0813
_diffrn_reflns_av_R_equivalents  0.1535
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_theta_min         4.401
_diffrn_reflns_theta_max         88.160
_diffrn_reflns_theta_full        67.684
_diffrn_measured_fraction_theta_max 0.861
_diffrn_measured_fraction_theta_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.861
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.861
_diffrn_reflns_point_group_measured_fraction_full 1.000
_reflns_number_total             5903
_reflns_number_gt                5196
_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       ?
_computing_cell_refinement       ?
_computing_data_reduction        ?
_computing_structure_solution    ?
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_molecular_graphics    ?
_computing_publication_material  ?
_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)+(0.1000P)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         5903
_refine_ls_number_parameters     240
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0986
_refine_ls_R_factor_gt           0.0781
_refine_ls_wR_factor_ref         0.2270
_refine_ls_wR_factor_gt          0.1947
_refine_ls_goodness_of_fit_ref   1.729
_refine_ls_restrained_S_all      1.729
_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 0.16619(9) 0.25632(8) 0.27756(5) 0.0139(2) Uani 1 1 d . . . . .
S1A S -0.0162(8) 0.4482(3) 0.1442(5) 0.0217(10) Uiso 0.56(4) 1 d . . P A 1
S1B S -0.0383(9) 0.4430(3) 0.1571(5) 0.0158(14) Uiso 0.44(4) 1 d . . P A 2
Si2 Si 0.22188(10) 0.02727(8) 0.33778(5) 0.0146(3) Uani 1 1 d . . . . .
Si4 Si 0.46400(10) 0.13732(8) 0.13424(5) 0.0161(3) Uani 1 1 d . . . . .
Si3 Si 0.37138(9) -0.05196(8) 0.22855(5) 0.0136(3) Uani 1 1 d . . . . .
S3A S 0.1028(5) -0.0386(4) 0.1245(4) 0.0183(9) Uiso 0.50(2) 1 d . . P B 1
S3B S 0.0857(4) -0.0516(3) 0.1432(4) 0.0151(10) Uiso 0.50(2) 1 d . . P B 2
Si5 Si 0.39445(10) 0.31089(8) 0.20261(5) 0.0148(3) Uani 1 1 d . . . . .
C11 C 0.0235(4) 0.2721(3) 0.1994(2) 0.0187(7) Uani 1 1 d . . . . .
H11A H 0.0624 0.2201 0.1589 0.022 Uiso 1 1 calc R U . A 1
H11B H -0.0669 0.2386 0.2293 0.022 Uiso 1 1 calc R U . A 1
Si11 Si 0.06642(10) 0.38281(9) 0.37401(5) 0.0171(3) Uani 1 1 d . . . . .
C12 C -0.1543(5) 0.4383(5) 0.0784(3) 0.0300(8) Uani 1 1 d . . . . .
H12A H -0.1110 0.3863 0.0394 0.045 Uiso 1 1 calc R U . A 1
H12B H -0.1901 0.5263 0.0475 0.045 Uiso 1 1 calc R U . A 1
H12C H -0.2354 0.3970 0.1132 0.045 Uiso 1 1 calc R U . A 1
C22 C 0.0511(5) -0.0595(4) 0.3743(3) 0.0289(8) Uani 1 1 d . . . . .
H22A H 0.0796 -0.1537 0.3926 0.043 Uiso 1 1 calc R U . . .
H22B H -0.0100 -0.0411 0.3285 0.043 Uiso 1 1 calc R U . . .
H22C H -0.0035 -0.0280 0.4205 0.043 Uiso 1 1 calc R U . . .
C21 C 0.3304(5) -0.0005(4) 0.4322(2) 0.0248(7) Uani 1 1 d . . . . .
H21A H 0.2664 0.0250 0.4778 0.037 Uiso 1 1 calc R U . . .
H21B H 0.4114 0.0522 0.4171 0.037 Uiso 1 1 calc R U . . .
H21C H 0.3685 -0.0930 0.4498 0.037 Uiso 1 1 calc R U . . .
Si31 Si 0.55865(10) -0.21778(9) 0.28570(6) 0.0175(3) Uani 1 1 d . . . . .
C31 C 0.2633(4) -0.1397(3) 0.1720(2) 0.0185(7) Uani 1 1 d . . . . .
H31A H 0.3301 -0.1696 0.1281 0.022 Uiso 1 1 calc R U . B 1
H31B H 0.2306 -0.2181 0.2123 0.022 Uiso 1 1 calc R U . B 1
C41 C 0.6705(5) 0.1113(4) 0.1046(3) 0.0321(9) Uani 1 1 d . . . . .
H41A H 0.6948 0.0338 0.0827 0.048 Uiso 1 1 calc R U . . .
H41B H 0.7219 0.0990 0.1538 0.048 Uiso 1 1 calc R U . . .
H41C H 0.6998 0.1877 0.0623 0.048 Uiso 1 1 calc R U . . .
C32 C 0.0254(4) -0.1616(4) 0.0903(2) 0.0243(7) Uani 1 1 d . . . . .
H32A H 0.0938 -0.1919 0.0480 0.036 Uiso 1 1 calc R U . B 1
H32B H -0.0666 -0.1227 0.0670 0.036 Uiso 1 1 calc R U . B 1
H32C H 0.0079 -0.2355 0.1377 0.036 Uiso 1 1 calc R U . B 1
C42 C 0.3753(5) 0.1832(4) 0.0318(2) 0.0305(8) Uani 1 1 d . . . . .
H42A H 0.4158 0.2590 -0.0057 0.046 Uiso 1 1 calc R U . . .
H42B H 0.2701 0.2044 0.0429 0.046 Uiso 1 1 calc R U . . .
H42C H 0.3949 0.1095 0.0062 0.046 Uiso 1 1 calc R U . . .
C51 C 0.5331(4) 0.3057(4) 0.2795(2) 0.0253(7) Uani 1 1 d . . . . .
H51A H 0.6270 0.3254 0.2488 0.038 Uiso 1 1 calc R U . . .
H51B H 0.5450 0.2186 0.3174 0.038 Uiso 1 1 calc R U . . .
H51C H 0.4977 0.3705 0.3114 0.038 Uiso 1 1 calc R U . . .
C52 C 0.3825(4) 0.4796(4) 0.1241(2) 0.0231(7) Uani 1 1 d . . . . .
H52A H 0.3543 0.5481 0.1539 0.035 Uiso 1 1 calc R U . . .
H52B H 0.3098 0.4846 0.0861 0.035 Uiso 1 1 calc R U . . .
H52C H 0.4775 0.4918 0.0926 0.035 Uiso 1 1 calc R U . . .
C111 C 0.0696(5) 0.5657(4) 0.3247(3) 0.0278(8) Uani 1 1 d . . . . .
H11C H 0.0436 0.6138 0.3676 0.042 Uiso 1 1 calc R U . . .
H11D H -0.0005 0.5954 0.2830 0.042 Uiso 1 1 calc R U . . .
H11E H 0.1674 0.5812 0.2982 0.042 Uiso 1 1 calc R U . . .
C112 C -0.1304(5) 0.3482(4) 0.4107(3) 0.0318(9) Uani 1 1 d . . . . .
H11F H -0.1326 0.2540 0.4323 0.048 Uiso 1 1 calc R U . . .
H11G H -0.1902 0.3806 0.3641 0.048 Uiso 1 1 calc R U . . .
H11H H -0.1690 0.3924 0.4546 0.048 Uiso 1 1 calc R U . . .
C113 C 0.1804(5) 0.3382(4) 0.4663(2) 0.0288(8) Uani 1 1 d . . . . .
H11I H 0.1391 0.3904 0.5055 0.043 Uiso 1 1 calc R U . . .
H11J H 0.2806 0.3560 0.4467 0.043 Uiso 1 1 calc R U . . .
H11K H 0.1800 0.2454 0.4939 0.043 Uiso 1 1 calc R U . . .
C311 C 0.4793(5) -0.3456(4) 0.3773(3) 0.0304(8) Uani 1 1 d . . . . .
H31C H 0.5581 -0.4108 0.4008 0.046 Uiso 1 1 calc R U . . .
H31D H 0.4100 -0.3884 0.3580 0.046 Uiso 1 1 calc R U . . .
H31E H 0.4294 -0.3028 0.4198 0.046 Uiso 1 1 calc R U . . .
C312 C 0.6478(4) -0.3064(4) 0.2029(3) 0.0287(8) Uani 1 1 d . . . . .
H31F H 0.6939 -0.2445 0.1563 0.043 Uiso 1 1 calc R U . . .
H31G H 0.5735 -0.3431 0.1831 0.043 Uiso 1 1 calc R U . . .
H31H H 0.7215 -0.3768 0.2269 0.043 Uiso 1 1 calc R U . . .
C313 C 0.7040(5) -0.1437(5) 0.3216(3) 0.0318(9) Uani 1 1 d . . . . .
H31I H 0.6587 -0.0949 0.3620 0.048 Uiso 1 1 calc R U . . .
H31J H 0.7511 -0.0846 0.2739 0.048 Uiso 1 1 calc R U . . .
H31K H 0.7768 -0.2134 0.3473 0.048 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 C11 1.913(3) . ?
Si1 Si11 2.3437(11) . ?
Si1 Si2 2.3495(12) . ?
Si1 Si5 2.3515(12) . ?
S1A C12 1.803(5) . ?
S1A C11 1.835(5) . ?
S1B C11 1.777(5) . ?
S1B C12 1.796(5) . ?
Si2 C22 1.879(4) . ?
Si2 C21 1.890(4) . ?
Si2 Si3 2.3672(12) . ?
Si4 C42 1.884(4) . ?
Si4 C41 1.886(4) . ?
Si4 Si5 2.3544(11) . ?
Si4 Si3 2.3681(12) . ?
Si3 C31 1.917(3) . ?
Si3 Si31 2.3461(11) . ?
S3A C32 1.804(4) . ?
S3A C31 1.813(4) . ?
S3B C31 1.799(4) . ?
S3B C32 1.804(4) . ?
Si5 C52 1.893(4) . ?
Si5 C51 1.895(4) . ?
Si11 C113 1.874(4) . ?
Si11 C111 1.878(4) . ?
Si11 C112 1.882(4) . ?
Si31 C313 1.869(4) . ?
Si31 C311 1.881(4) . ?
Si31 C312 1.883(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
_geom_angle_publ_flag
C11 Si1 Si11 108.53(11) . . ?
C11 Si1 Si2 106.05(11) . . ?
Si11 Si1 Si2 114.95(5) . . ?
C11 Si1 Si5 109.46(12) . . ?
Si11 Si1 Si5 115.53(5) . . ?
Si2 Si1 Si5 101.78(4) . . ?
C12 S1A C11 100.4(3) . . ?
C11 S1B C12 102.9(2) . . ?
C22 Si2 C21 107.77(19) . . ?
C22 Si2 Si1 112.69(14) . . ?
C21 Si2 Si1 110.16(12) . . ?
C22 Si2 Si3 112.14(14) . . ?
C21 Si2 Si3 110.19(13) . . ?
Si1 Si2 Si3 103.89(4) . . ?
C42 Si4 C41 106.0(2) . . ?
C42 Si4 Si5 108.80(14) . . ?
C41 Si4 Si5 112.47(14) . . ?
C42 Si4 Si3 110.96(14) . . ?
C41 Si4 Si3 113.31(14) . . ?
Si5 Si4 Si3 105.31(4) . . ?
C31 Si3 Si31 103.94(11) . . ?
C31 Si3 Si2 112.48(11) . . ?
Si31 Si3 Si2 110.08(4) . . ?
C31 Si3 Si4 111.36(11) . . ?
Si31 Si3 Si4 113.39(5) . . ?
Si2 Si3 Si4 105.76(4) . . ?
C32 S3A C31 100.2(2) . . ?
C31 S3B C32 100.72(19) . . ?
C52 Si5 C51 108.70(18) . . ?
C52 Si5 Si1 114.15(12) . . ?
C51 Si5 Si1 109.74(12) . . ?
C52 Si5 Si4 111.53(12) . . ?
C51 Si5 Si4 110.43(13) . . ?
Si1 Si5 Si4 102.16(4) . . ?
S1B C11 Si1 109.5(2) . . ?
S1A C11 Si1 108.64(19) . . ?
C113 Si11 C111 107.02(19) . . ?
C113 Si11 C112 110.3(2) . . ?
C111 Si11 C112 109.6(2) . . ?
C113 Si11 Si1 109.85(13) . . ?
C111 Si11 Si1 111.27(13) . . ?
C112 Si11 Si1 108.80(13) . . ?
C313 Si31 C311 109.4(2) . . ?
C313 Si31 C312 108.9(2) . . ?
C311 Si31 C312 107.4(2) . . ?
C313 Si31 Si3 110.77(14) . . ?
C311 Si31 Si3 110.86(13) . . ?
C312 Si31 Si3 109.39(13) . . ?
S3B C31 Si3 114.62(19) . . ?
S3A C31 Si3 114.92(19) . . ?

_refine_diff_density_max         1.551
_refine_diff_density_min         -1.376
_refine_diff_density_rms         0.228



_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_solvent_exptl_crystal_recrystallization_method 'diethyl ether'
