# Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry.
# This journal is © The Royal Society of Chemistry 2018

####################################################################### 
# 
# 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. 
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#######################################################################

data_mo_SNRKA532
_database_code_depnum_ccdc_archive 'CCDC 1834617'
_audit_update_record             
;
2018-04-03 deposited with the CCDC.
2018-06-22 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            'C26 H32 O4 Si'
_chemical_formula_weight         436.60

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/c'
_space_group_name_Hall           '-P 2ybc'

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

_cell_length_a                   11.660(14)
_cell_length_b                   12.070(9)
_cell_length_c                   18.027(13)
_cell_angle_alpha                90
_cell_angle_beta                 100.58(7)
_cell_angle_gamma                90
_cell_volume                     2494(4)
_cell_formula_units_Z            4
_cell_measurement_temperature    290(2)
_cell_measurement_reflns_used    19390
_cell_measurement_theta_min      2.842
_cell_measurement_theta_max      24.860

_exptl_crystal_description       needle
_exptl_crystal_colour            colorless
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_F_000             936
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.13
_exptl_absorpt_coefficient_mu    0.122
_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   sadabs
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      290(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   ?
_diffrn_measurement_device_type  'Bruker APEX-3 CCD'
_diffrn_measurement_method       hemispehere
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            19390
_diffrn_reflns_av_unetI/netI     0.0617
_diffrn_reflns_av_R_equivalents  0.0649
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_theta_min         2.842
_diffrn_reflns_theta_max         24.860
_diffrn_reflns_theta_full        24.860
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measured_fraction_theta_full 0.991
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_Laue_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_point_group_measured_fraction_full 0.991
_reflns_number_total             4284
_reflns_number_gt                2513
_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+0.3911P] 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         4284
_refine_ls_number_parameters     285
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1092
_refine_ls_R_factor_gt           0.0499
_refine_ls_wR_factor_ref         0.1623
_refine_ls_wR_factor_gt          0.1272
_refine_ls_goodness_of_fit_ref   0.894
_refine_ls_restrained_S_all      0.894
_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 0.39111(7) 0.50572(6) 0.65281(4) 0.0403(3) Uani 1 1 d . . . . .
O3 O 0.27305(15) 0.24087(15) 0.49065(10) 0.0409(5) Uani 1 1 d . . . . .
O4 O 0.36389(16) 0.38230(15) 0.61716(10) 0.0471(5) Uani 1 1 d . . . . .
O2 O 0.16838(18) 0.07730(17) 0.46907(12) 0.0571(6) Uani 1 1 d . . . . .
O1 O 0.0479(2) -0.0123(2) 0.37859(15) 0.0883(9) Uani 1 1 d . . . . .
C8 C 0.3731(2) 0.2123(2) 0.54962(15) 0.0385(7) Uani 1 1 d . . . . .
C21 C 0.3327(2) 0.6098(2) 0.57912(15) 0.0420(7) Uani 1 1 d . . . . .
C15 C 0.5530(3) 0.5230(2) 0.68318(15) 0.0421(7) Uani 1 1 d . . . . .
C10 C 0.4333(2) 0.3186(2) 0.57578(16) 0.0425(7) Uani 1 1 d . . . . .
H10A H 0.5081 0.3026 0.6075 0.051 Uiso 1 1 calc R U . . .
H10B H 0.4474 0.3607 0.5325 0.051 Uiso 1 1 calc R U . . .
C5 C 0.1738(2) 0.1870(2) 0.50368(16) 0.0457(7) Uani 1 1 d . . . . .
C20 C 0.6146(3) 0.6102(3) 0.65884(16) 0.0513(8) Uani 1 1 d . . . . .
H20 H 0.5742 0.6635 0.6271 0.062 Uiso 1 1 calc R U . . .
C11 C 0.3092(3) 0.5111(2) 0.73404(16) 0.0519(8) Uani 1 1 d . . . . .
C22 C 0.3239(3) 0.7229(3) 0.59403(18) 0.0563(9) Uani 1 1 d . . . . .
H22 H 0.3537 0.7492 0.6422 0.068 Uiso 1 1 calc R U . . .
C7 C 0.3196(3) 0.1530(2) 0.60975(16) 0.0510(8) Uani 1 1 d . . . . .
H7A H 0.3365 0.0743 0.6101 0.061 Uiso 1 1 calc R U . . .
H7B H 0.3496 0.1832 0.6594 0.061 Uiso 1 1 calc R U . . .
C26 C 0.2894(3) 0.5762(3) 0.50523(17) 0.0548(8) Uani 1 1 d . . . . .
H26 H 0.2934 0.5018 0.4926 0.066 Uiso 1 1 calc R U . . .
C16 C 0.6191(3) 0.4451(3) 0.72921(17) 0.0544(8) Uani 1 1 d . . . . .
H16 H 0.5818 0.3846 0.7461 0.065 Uiso 1 1 calc R U . . .
C9 C 0.4539(3) 0.1393(3) 0.51389(18) 0.0567(9) Uani 1 1 d . . . . .
H9A H 0.4121 0.0749 0.4924 0.085 Uiso 1 1 calc R U . . .
H9B H 0.5189 0.1168 0.5517 0.085 Uiso 1 1 calc R U . . .
H9C H 0.4817 0.1798 0.4750 0.085 Uiso 1 1 calc R U . . .
C6 C 0.1894(3) 0.1736(3) 0.58777(17) 0.0575(9) Uani 1 1 d . . . . .
H6A H 0.1448 0.1112 0.6012 0.069 Uiso 1 1 calc R U . . .
H6B H 0.1664 0.2401 0.6115 0.069 Uiso 1 1 calc R U . . .
C1 C 0.0711(3) 0.0709(3) 0.4147(2) 0.0640(10) Uani 1 1 d . . . . .
C19 C 0.7342(3) 0.6200(3) 0.68033(18) 0.0606(9) Uani 1 1 d . . . . .
H19 H 0.7729 0.6794 0.6631 0.073 Uiso 1 1 calc R U . . .
C3 C 0.0676(3) 0.2441(3) 0.46232(19) 0.0583(9) Uani 1 1 d . . . . .
C17 C 0.7381(3) 0.4549(3) 0.75050(19) 0.0647(10) Uani 1 1 d . . . . .
H17 H 0.7797 0.4013 0.7814 0.078 Uiso 1 1 calc R U . . .
C18 C 0.7955(3) 0.5427(3) 0.72665(19) 0.0639(10) Uani 1 1 d . . . . .
H18 H 0.8758 0.5499 0.7419 0.077 Uiso 1 1 calc R U . . .
C23 C 0.2727(3) 0.7961(3) 0.5398(2) 0.0683(10) Uani 1 1 d . . . . .
H23 H 0.2663 0.8705 0.5518 0.082 Uiso 1 1 calc R U . . .
C24 C 0.2310(3) 0.7601(4) 0.4682(2) 0.0772(12) Uani 1 1 d . . . . .
H24 H 0.1960 0.8099 0.4316 0.093 Uiso 1 1 calc R U . . .
C25 C 0.2407(3) 0.6511(4) 0.4503(2) 0.0757(11) Uani 1 1 d . . . . .
H25 H 0.2145 0.6271 0.4011 0.091 Uiso 1 1 calc R U . . .
C2 C 0.0108(3) 0.1754(3) 0.4124(2) 0.0739(11) Uani 1 1 d . . . . .
H2 H -0.0588 0.1917 0.3799 0.089 Uiso 1 1 calc R U . . .
C14 C 0.3281(4) 0.6203(3) 0.7765(2) 0.0943(14) Uani 1 1 d . . . . .
H14A H 0.2988 0.6146 0.8228 0.141 Uiso 1 1 calc R U . . .
H14B H 0.2875 0.6783 0.7460 0.141 Uiso 1 1 calc R U . . .
H14C H 0.4100 0.6370 0.7876 0.141 Uiso 1 1 calc R U . . .
C4 C 0.0414(3) 0.3603(3) 0.4793(3) 0.0915(13) Uani 1 1 d . . . . .
H4A H 0.0945 0.4088 0.4602 0.137 Uiso 1 1 calc R U . . .
H4B H 0.0500 0.3697 0.5329 0.137 Uiso 1 1 calc R U . . .
H4C H -0.0372 0.3778 0.4558 0.137 Uiso 1 1 calc R U . . .
C12 C 0.1800(3) 0.4962(4) 0.7046(2) 0.1014(15) Uani 1 1 d . . . . .
H12A H 0.1667 0.4258 0.6797 0.152 Uiso 1 1 calc R U . . .
H12B H 0.1527 0.5543 0.6694 0.152 Uiso 1 1 calc R U . . .
H12C H 0.1386 0.4991 0.7459 0.152 Uiso 1 1 calc R U . . .
C13 C 0.3506(4) 0.4189(3) 0.7902(2) 0.0999(15) Uani 1 1 d . . . . .
H13A H 0.3060 0.4203 0.8299 0.150 Uiso 1 1 calc R U . . .
H13B H 0.4317 0.4295 0.8112 0.150 Uiso 1 1 calc R U . . .
H13C H 0.3404 0.3486 0.7649 0.150 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 O4 1.630(2) . ?
Si1 C21 1.864(3) . ?
Si1 C15 1.878(4) . ?
Si1 C11 1.890(3) . ?
O3 C5 1.384(3) . ?
O3 C8 1.468(3) . ?
O4 C10 1.423(3) . ?
O2 C1 1.358(4) . ?
O2 C5 1.460(3) . ?
O1 C1 1.201(4) . ?
C8 C10 1.496(4) . ?
C8 C9 1.517(4) . ?
C8 C7 1.525(4) . ?
C21 C26 1.395(4) . ?
C21 C22 1.399(4) . ?
C15 C20 1.390(4) . ?
C15 C16 1.390(4) . ?
C10 H10A 0.9700 . ?
C10 H10B 0.9700 . ?
C5 C3 1.492(4) . ?
C5 C6 1.502(4) . ?
C20 C19 1.382(5) . ?
C20 H20 0.9300 . ?
C11 C12 1.514(5) . ?
C11 C14 1.520(4) . ?
C11 C13 1.522(4) . ?
C22 C23 1.372(4) . ?
C22 H22 0.9300 . ?
C7 C6 1.517(4) . ?
C7 H7A 0.9700 . ?
C7 H7B 0.9700 . ?
C26 C25 1.383(5) . ?
C26 H26 0.9300 . ?
C16 C17 1.375(5) . ?
C16 H16 0.9300 . ?
C9 H9A 0.9600 . ?
C9 H9B 0.9600 . ?
C9 H9C 0.9600 . ?
C6 H6A 0.9700 . ?
C6 H6B 0.9700 . ?
C1 C2 1.441(5) . ?
C19 C18 1.363(4) . ?
C19 H19 0.9300 . ?
C3 C2 1.311(4) . ?
C3 C4 1.479(5) . ?
C17 C18 1.365(5) . ?
C17 H17 0.9300 . ?
C18 H18 0.9300 . ?
C23 C24 1.363(5) . ?
C23 H23 0.9300 . ?
C24 C25 1.364(5) . ?
C24 H24 0.9300 . ?
C25 H25 0.9300 . ?
C2 H2 0.9300 . ?
C14 H14A 0.9600 . ?
C14 H14B 0.9600 . ?
C14 H14C 0.9600 . ?
C4 H4A 0.9600 . ?
C4 H4B 0.9600 . ?
C4 H4C 0.9600 . ?
C12 H12A 0.9600 . ?
C12 H12B 0.9600 . ?
C12 H12C 0.9600 . ?
C13 H13A 0.9600 . ?
C13 H13B 0.9600 . ?
C13 H13C 0.9600 . ?

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
O4 Si1 C21 108.40(13) . . ?
O4 Si1 C15 109.21(11) . . ?
C21 Si1 C15 110.44(14) . . ?
O4 Si1 C11 104.30(12) . . ?
C21 Si1 C11 111.00(14) . . ?
C15 Si1 C11 113.20(15) . . ?
C5 O3 C8 110.2(2) . . ?
C10 O4 Si1 127.75(17) . . ?
C1 O2 C5 109.0(2) . . ?
O3 C8 C10 106.9(2) . . ?
O3 C8 C9 107.6(2) . . ?
C10 C8 C9 109.9(2) . . ?
O3 C8 C7 104.5(2) . . ?
C10 C8 C7 114.1(2) . . ?
C9 C8 C7 113.3(3) . . ?
C26 C21 C22 116.1(3) . . ?
C26 C21 Si1 120.4(2) . . ?
C22 C21 Si1 123.4(2) . . ?
C20 C15 C16 116.0(3) . . ?
C20 C15 Si1 122.8(2) . . ?
C16 C15 Si1 121.1(2) . . ?
O4 C10 C8 110.4(2) . . ?
O4 C10 H10A 109.6 . . ?
C8 C10 H10A 109.6 . . ?
O4 C10 H10B 109.6 . . ?
C8 C10 H10B 109.6 . . ?
H10A C10 H10B 108.1 . . ?
O3 C5 O2 109.0(2) . . ?
O3 C5 C3 110.0(3) . . ?
O2 C5 C3 103.8(2) . . ?
O3 C5 C6 105.8(2) . . ?
O2 C5 C6 108.7(2) . . ?
C3 C5 C6 119.3(3) . . ?
C19 C20 C15 122.0(3) . . ?
C19 C20 H20 119.0 . . ?
C15 C20 H20 119.0 . . ?
C12 C11 C14 108.8(3) . . ?
C12 C11 C13 108.7(3) . . ?
C14 C11 C13 107.5(3) . . ?
C12 C11 Si1 109.6(2) . . ?
C14 C11 Si1 111.9(2) . . ?
C13 C11 Si1 110.3(2) . . ?
C23 C22 C21 122.0(3) . . ?
C23 C22 H22 119.0 . . ?
C21 C22 H22 119.0 . . ?
C6 C7 C8 105.0(2) . . ?
C6 C7 H7A 110.8 . . ?
C8 C7 H7A 110.8 . . ?
C6 C7 H7B 110.8 . . ?
C8 C7 H7B 110.8 . . ?
H7A C7 H7B 108.8 . . ?
C25 C26 C21 121.5(3) . . ?
C25 C26 H26 119.2 . . ?
C21 C26 H26 119.2 . . ?
C17 C16 C15 122.0(3) . . ?
C17 C16 H16 119.0 . . ?
C15 C16 H16 119.0 . . ?
C8 C9 H9A 109.5 . . ?
C8 C9 H9B 109.5 . . ?
H9A C9 H9B 109.5 . . ?
C8 C9 H9C 109.5 . . ?
H9A C9 H9C 109.5 . . ?
H9B C9 H9C 109.5 . . ?
C5 C6 C7 102.2(2) . . ?
C5 C6 H6A 111.3 . . ?
C7 C6 H6A 111.3 . . ?
C5 C6 H6B 111.3 . . ?
C7 C6 H6B 111.3 . . ?
H6A C6 H6B 109.2 . . ?
O1 C1 O2 120.9(4) . . ?
O1 C1 C2 131.0(3) . . ?
O2 C1 C2 108.1(3) . . ?
C18 C19 C20 120.1(3) . . ?
C18 C19 H19 119.9 . . ?
C20 C19 H19 119.9 . . ?
C2 C3 C4 130.2(3) . . ?
C2 C3 C5 108.6(3) . . ?
C4 C3 C5 121.2(3) . . ?
C18 C17 C16 120.5(3) . . ?
C18 C17 H17 119.8 . . ?
C16 C17 H17 119.8 . . ?
C19 C18 C17 119.4(3) . . ?
C19 C18 H18 120.3 . . ?
C17 C18 H18 120.3 . . ?
C24 C23 C22 120.1(4) . . ?
C24 C23 H23 119.9 . . ?
C22 C23 H23 119.9 . . ?
C23 C24 C25 120.1(3) . . ?
C23 C24 H24 120.0 . . ?
C25 C24 H24 120.0 . . ?
C24 C25 C26 120.1(3) . . ?
C24 C25 H25 120.0 . . ?
C26 C25 H25 120.0 . . ?
C3 C2 C1 110.6(3) . . ?
C3 C2 H2 124.7 . . ?
C1 C2 H2 124.7 . . ?
C11 C14 H14A 109.5 . . ?
C11 C14 H14B 109.5 . . ?
H14A C14 H14B 109.5 . . ?
C11 C14 H14C 109.5 . . ?
H14A C14 H14C 109.5 . . ?
H14B C14 H14C 109.5 . . ?
C3 C4 H4A 109.5 . . ?
C3 C4 H4B 109.5 . . ?
H4A C4 H4B 109.5 . . ?
C3 C4 H4C 109.5 . . ?
H4A C4 H4C 109.5 . . ?
H4B C4 H4C 109.5 . . ?
C11 C12 H12A 109.5 . . ?
C11 C12 H12B 109.5 . . ?
H12A C12 H12B 109.5 . . ?
C11 C12 H12C 109.5 . . ?
H12A C12 H12C 109.5 . . ?
H12B C12 H12C 109.5 . . ?
C11 C13 H13A 109.5 . . ?
C11 C13 H13B 109.5 . . ?
H13A C13 H13B 109.5 . . ?
C11 C13 H13C 109.5 . . ?
H13A C13 H13C 109.5 . . ?
H13B C13 H13C 109.5 . . ?

_refine_diff_density_max         0.197
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.042

