# Electronic Supplementary Material (ESI) for RSC Advances.
# This journal is © The Royal Society of Chemistry 2015

####################################################################### 
# 
# 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_s8
_database_code_depnum_ccdc_archive 'CCDC 1400318'
_audit_update_record             
;
2015-05-11 deposited with the CCDC.
2015-07-23 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2013
_chemical_name_systematic        
;
 ?
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         'C15 H22 N2 O4 S Si'
_chemical_formula_sum            'C15 H22 N2 O4 S Si'
_chemical_formula_weight         354.49

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'
N N 0.0061 0.0033 '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'
S S 0.1246 0.1234 '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                   11.5580(10)
_cell_length_b                   7.3752(7)
_cell_length_c                   19.4783(17)
_cell_angle_alpha                90
_cell_angle_beta                 93.613(3)
_cell_angle_gamma                90
_cell_volume                     1657.1(3)
_cell_formula_units_Z            4
_cell_measurement_temperature    170(2)
_cell_measurement_reflns_used    ?
_cell_measurement_theta_min      ?
_cell_measurement_theta_max      ?

_exptl_crystal_description       plates
_exptl_crystal_colour            yellow
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.421
_exptl_crystal_F_000             752
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.09
_exptl_absorpt_coefficient_mu    0.289
_shelx_estimated_absorpt_T_min   ?
_shelx_estimated_absorpt_T_max   ?
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.954
_exptl_absorpt_correction_T_max  0.975
_exptl_absorpt_process_details   'SADABS (Sheldrick 2014)'
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      170(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   'fine-focus sealed tube'
_diffrn_measurement_device_type  'Bruker APEX II CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            27042
_diffrn_reflns_av_unetI/netI     0.0545
_diffrn_reflns_av_R_equivalents  0.0713
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_theta_min         1.995
_diffrn_reflns_theta_max         28.370
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measured_fraction_theta_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_point_group_measured_fraction_full 0.995
_reflns_number_total             4117
_reflns_number_gt                2944
_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       'APEX2 (Bruker, 2013)'
_computing_cell_refinement       'APEX2 (Bruker, 2013)'
_computing_data_reduction        'APEX2 (Bruker, 2013)'
_computing_structure_solution    'SHELXT-2014/6 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_molecular_graphics    'SHELXP-2014/6 (Sheldrick, 2014)'
_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)+(0.0370P)²+0.6626P] 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         4117
_refine_ls_number_parameters     208
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0713
_refine_ls_R_factor_gt           0.0409
_refine_ls_wR_factor_ref         0.0978
_refine_ls_wR_factor_gt          0.0870
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_restrained_S_all      1.018
_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 0.49193(4) 0.80120(7) 0.21902(3) 0.01966(13) Uani 1 1 d . . . . .
S1 S 0.46854(4) 0.16222(7) 0.37603(3) 0.02775(13) Uani 1 1 d . . . . .
O1 O 0.59241(14) 0.3814(2) 0.45760(8) 0.0406(4) Uani 1 1 d . . . . .
C1 C 0.57530(17) 0.2254(3) 0.43937(10) 0.0244(4) Uani 1 1 d . . . . .
C2 C 0.64718(16) 0.0734(3) 0.47007(10) 0.0211(4) Uani 1 1 d . . . . .
C3 C 0.64344(18) -0.1023(3) 0.44467(10) 0.0259(4) Uani 1 1 d . . . . .
H3 H 0.5926 -0.1335 0.4063 0.031 Uiso 1 1 calc R U . . .
C4 C 0.71569(18) -0.2313(3) 0.47661(11) 0.0302(5) Uani 1 1 d . . . . .
H4 H 0.7119 -0.3516 0.4592 0.036 Uiso 1 1 calc R U . . .
N1 N 0.79030(15) -0.1973(3) 0.53034(9) 0.0322(4) Uani 1 1 d . . . . .
C5 C 0.79131(18) -0.0273(3) 0.55459(11) 0.0306(5) Uani 1 1 d . . . . .
H5 H 0.8427 0.0001 0.5932 0.037 Uiso 1 1 calc R U . . .
C6 C 0.72248(17) 0.1100(3) 0.52702(10) 0.0269(4) Uani 1 1 d . . . . .
H6 H 0.7263 0.2280 0.5465 0.032 Uiso 1 1 calc R U . . .
C7 C 0.40357(17) 0.3801(3) 0.35530(11) 0.0274(5) Uani 1 1 d . . . . .
H7A H 0.3236 0.3611 0.3353 0.033 Uiso 1 1 calc R U . . .
H7B H 0.3987 0.4511 0.3982 0.033 Uiso 1 1 calc R U . . .
C8 C 0.47107(17) 0.4883(3) 0.30500(11) 0.0270(5) Uani 1 1 d . . . . .
H8A H 0.4835 0.4117 0.2644 0.032 Uiso 1 1 calc R U . . .
H8B H 0.5481 0.5185 0.3271 0.032 Uiso 1 1 calc R U . . .
C9 C 0.41074(16) 0.6634(3) 0.28096(10) 0.0236(4) Uani 1 1 d . . . . .
H9A H 0.3979 0.7390 0.3218 0.028 Uiso 1 1 calc R U . . .
H9B H 0.3338 0.6325 0.2589 0.028 Uiso 1 1 calc R U . . .
C11 C 0.51924(17) 1.1398(3) 0.13963(11) 0.0277(5) Uani 1 1 d . . . . .
H11A H 0.5246 1.1958 0.0938 0.033 Uiso 1 1 calc R U . . .
H11B H 0.5501 1.2263 0.1751 0.033 Uiso 1 1 calc R U . . .
C12 C 0.39424(18) 1.0910(3) 0.15148(11) 0.0308(5) Uani 1 1 d . . . . .
H12A H 0.3510 1.2012 0.1636 0.037 Uiso 1 1 calc R U . . .
H12B H 0.3562 1.0386 0.1090 0.037 Uiso 1 1 calc R U . . .
O11 O 0.39361(11) 0.96361(19) 0.20573(7) 0.0288(3) Uani 1 1 d . . . . .
C21 C 0.57506(18) 0.8601(3) 0.08075(10) 0.0255(4) Uani 1 1 d . . . . .
H21A H 0.6405 0.8865 0.0518 0.031 Uiso 1 1 calc R U . . .
H21B H 0.5016 0.8874 0.0539 0.031 Uiso 1 1 calc R U . . .
C22 C 0.57789(18) 0.6631(3) 0.10336(10) 0.0271(4) Uani 1 1 d . . . . .
H22A H 0.5493 0.5845 0.0647 0.033 Uiso 1 1 calc R U . . .
H22B H 0.6585 0.6270 0.1173 0.033 Uiso 1 1 calc R U . . .
O21 O 0.50687(11) 0.64189(18) 0.15940(7) 0.0251(3) Uani 1 1 d . . . . .
C31 C 0.70306(16) 0.9861(3) 0.17587(10) 0.0261(4) Uani 1 1 d . . . . .
H31A H 0.7382 1.1021 0.1623 0.031 Uiso 1 1 calc R U . . .
H31B H 0.7523 0.8852 0.1612 0.031 Uiso 1 1 calc R U . . .
N2 N 0.58469(13) 0.9688(2) 0.14410(8) 0.0222(4) Uani 1 1 d . . . . .
C32 C 0.69240(17) 0.9802(3) 0.25305(10) 0.0276(5) Uani 1 1 d . . . . .
H32A H 0.7689 0.9533 0.2766 0.033 Uiso 1 1 calc R U . . .
H32B H 0.6660 1.0994 0.2694 0.033 Uiso 1 1 calc R U . . .
O31 O 0.61156(11) 0.84394(18) 0.26872(7) 0.0243(3) Uani 1 1 d . . . . .


_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 O11 1.6601(14) . ?
Si1 O31 1.6673(14) . ?
Si1 O21 1.6685(14) . ?
Si1 C9 1.8739(19) . ?
Si1 N2 2.2371(17) . ?
S1 C1 1.752(2) . ?
S1 C7 1.809(2) . ?
O1 C1 1.216(2) . ?
C1 C2 1.498(3) . ?
C2 C3 1.387(3) . ?
C2 C6 1.392(3) . ?
C3 C4 1.387(3) . ?
C4 N1 1.337(3) . ?
N1 C5 1.339(3) . ?
C5 C6 1.376(3) . ?
C7 C8 1.517(3) . ?
C8 C9 1.527(3) . ?
C11 N2 1.470(2) . ?
C11 C12 1.520(3) . ?
C12 O11 1.414(2) . ?
C21 N2 1.470(2) . ?
C21 C22 1.518(3) . ?
C22 O21 1.415(2) . ?
C31 N2 1.471(2) . ?
C31 C32 1.517(3) . ?
C32 O31 1.418(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
O11 Si1 O31 119.25(8) . . ?
O11 Si1 O21 119.96(8) . . ?
O31 Si1 O21 114.76(7) . . ?
O11 Si1 C9 97.25(8) . . ?
O31 Si1 C9 99.17(8) . . ?
O21 Si1 C9 98.29(8) . . ?
O11 Si1 N2 81.43(6) . . ?
O31 Si1 N2 81.97(6) . . ?
O21 Si1 N2 81.97(6) . . ?
C9 Si1 N2 178.58(8) . . ?
C1 S1 C7 100.65(10) . . ?
O1 C1 C2 121.03(19) . . ?
O1 C1 S1 123.48(16) . . ?
C2 C1 S1 115.49(14) . . ?
C3 C2 C6 117.98(18) . . ?
C3 C2 C1 123.58(18) . . ?
C6 C2 C1 118.44(18) . . ?
C2 C3 C4 118.5(2) . . ?
N1 C4 C3 124.2(2) . . ?
C4 N1 C5 116.27(18) . . ?
N1 C5 C6 124.0(2) . . ?
C5 C6 C2 119.03(19) . . ?
C8 C7 S1 112.84(14) . . ?
C7 C8 C9 113.53(16) . . ?
C8 C9 Si1 114.75(13) . . ?
N2 C11 C12 106.18(16) . . ?
O11 C12 C11 108.66(16) . . ?
C12 O11 Si1 124.08(12) . . ?
N2 C21 C22 106.22(16) . . ?
O21 C22 C21 109.07(16) . . ?
C22 O21 Si1 123.33(12) . . ?
N2 C31 C32 106.44(15) . . ?
C21 N2 C11 113.99(16) . . ?
C21 N2 C31 114.81(15) . . ?
C11 N2 C31 114.33(16) . . ?
C21 N2 Si1 103.43(11) . . ?
C11 N2 Si1 104.27(11) . . ?
C31 N2 Si1 104.16(11) . . ?
O31 C32 C31 109.23(16) . . ?
C32 O31 Si1 122.85(12) . . ?

_refine_diff_density_max         0.300
_refine_diff_density_min         -0.379
_refine_diff_density_rms         0.059

_shelxl_version_number           2013-3

