# Electronic Supplementary Material (ESI) for ChemComm.
# 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. 
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data_cd214584
_database_code_depnum_ccdc_archive 'CCDC 1534422'
_audit_update_record             
;
2017-02-23 deposited with the CCDC.
2017-06-13 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2013
_chemical_name_systematic        
; 
 ? 
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C20 H18 O3'
_chemical_formula_weight         306.34

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'

_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_H-M_alt        'C 2/c'
_space_group_name_Hall           '-C 2yc'

_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+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'

_cell_length_a                   27.179(3)
_cell_length_b                   6.7881(7)
_cell_length_c                   20.759(2)
_cell_angle_alpha                90
_cell_angle_beta                 127.703(2)
_cell_angle_gamma                90
_cell_volume                     3030.2(5)
_cell_formula_units_Z            8
_cell_measurement_temperature    293(2)
_cell_measurement_reflns_used    3434
_cell_measurement_theta_min      4.960
_cell_measurement_theta_max      56.595

_exptl_crystal_description       prismatic
_exptl_crystal_colour            colorless
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_F_000             1296
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.211
_exptl_crystal_size_mid          0.165
_exptl_crystal_size_min          0.123
_exptl_absorpt_coefficient_mu    0.089
_shelx_estimated_absorpt_T_min   ?
_shelx_estimated_absorpt_T_max   ?
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.6484
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_process_details   sadabs

_exptl_special_details           
; 
 ? 
;

_diffrn_ambient_temperature      293(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   ?
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            8734
_diffrn_reflns_av_unetI/netI     0.0289
_diffrn_reflns_av_R_equivalents  0.0307
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_theta_min         1.998
_diffrn_reflns_theta_max         25.991
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measured_fraction_theta_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_point_group_measured_fraction_full 1.000
_reflns_number_total             2978
_reflns_number_gt                2536
_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       'Bruker SMART'
_computing_cell_refinement       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'

_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)+(0.0650P)²+0.9670P] 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         2978
_refine_ls_number_parameters     210
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0482
_refine_ls_R_factor_gt           0.0414
_refine_ls_wR_factor_ref         0.1145
_refine_ls_wR_factor_gt          0.1083
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_restrained_S_all      1.042
_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
O1 O 0.24092(5) 0.80853(16) 0.22210(6) 0.0487(3) Uani 1 1 d . . . . .
O2 O 0.31917(5) 0.63579(16) 0.51906(6) 0.0518(3) Uani 1 1 d . . . . .
O3 O 0.38212(5) 0.94732(16) 0.59764(6) 0.0469(3) Uani 1 1 d . . . . .
C1 C 0.28563(6) 0.72924(19) 0.23263(8) 0.0348(3) Uani 1 1 d . . . . .
C2 C 0.27810(7) 0.6009(2) 0.17114(8) 0.0421(3) Uani 1 1 d . . . . .
H2 H 0.2387 0.5841 0.1220 0.050 Uiso 1 1 calc R U . . .
C3 C 0.32599(7) 0.5067(2) 0.18309(8) 0.0427(3) Uani 1 1 d . . . . .
H3 H 0.3190 0.4306 0.1410 0.051 Uiso 1 1 calc R U . . .
C4 C 0.38854(6) 0.51755(19) 0.25896(8) 0.0363(3) Uani 1 1 d . . . . .
C5 C 0.43595(8) 0.4036(2) 0.27014(10) 0.0478(4) Uani 1 1 d . . . . .
H5 H 0.4279 0.3285 0.2272 0.057 Uiso 1 1 calc R U . . .
C6 C 0.49436(8) 0.4006(2) 0.34368(11) 0.0518(4) Uani 1 1 d . . . . .
H6 H 0.5258 0.3255 0.3502 0.062 Uiso 1 1 calc R U . . .
C7 C 0.50604(7) 0.5096(2) 0.40761(10) 0.0478(4) Uani 1 1 d . . . . .
H7 H 0.5451 0.5046 0.4580 0.057 Uiso 1 1 calc R U . . .
C8 C 0.45988(6) 0.6268(2) 0.39734(9) 0.0397(3) Uani 1 1 d . . . . .
H8 H 0.4686 0.7008 0.4409 0.048 Uiso 1 1 calc R U . . .
C9 C 0.40088(6) 0.63534(18) 0.32304(8) 0.0322(3) Uani 1 1 d . . . . .
C10 C 0.35140(6) 0.77689(18) 0.30838(7) 0.0314(3) Uani 1 1 d . . . . .
C11 C 0.36682(7) 0.99149(19) 0.29612(8) 0.0381(3) Uani 1 1 d . . . . .
H11A H 0.3893 0.9862 0.2737 0.046 Uiso 1 1 calc R U . . .
H11B H 0.3289 1.0663 0.2594 0.046 Uiso 1 1 calc R U . . .
C12 C 0.40684(7) 1.0862(2) 0.38046(8) 0.0416(3) Uani 1 1 d . . . . .
H12A H 0.4508 1.0673 0.4070 0.050 Uiso 1 1 calc R U . . .
H12B H 0.3983 1.2261 0.3773 0.050 Uiso 1 1 calc R U . . .
C13 C 0.38721(6) 0.97790(19) 0.42464(8) 0.0339(3) Uani 1 1 d . . . . .
C14 C 0.35528(6) 0.80807(18) 0.38408(7) 0.0303(3) Uani 1 1 d . . . . .
C15 C 0.33192(6) 0.68719(18) 0.41374(7) 0.0329(3) Uani 1 1 d . . . . .
H15 H 0.3106 0.5723 0.3863 0.040 Uiso 1 1 calc R U . . .
C16 C 0.34079(6) 0.73977(19) 0.48448(8) 0.0341(3) Uani 1 1 d . . . . .
C17 C 0.37461(6) 0.9112(2) 0.52704(7) 0.0341(3) Uani 1 1 d . . . . .
C18 C 0.39776(6) 1.0290(2) 0.49709(8) 0.0364(3) Uani 1 1 d . . . . .
H18 H 0.4203 1.1419 0.5251 0.044 Uiso 1 1 calc R U . . .
C19 C 0.27442(9) 0.4890(3) 0.47053(11) 0.0659(5) Uani 1 1 d . . . . .
H19A H 0.2416 0.5435 0.4185 0.099 Uiso 1 1 calc R U . . .
H19B H 0.2575 0.4416 0.4969 0.099 Uiso 1 1 calc R U . . .
H19C H 0.2936 0.3819 0.4632 0.099 Uiso 1 1 calc R U . . .
C20 C 0.41588(10) 1.1203(3) 0.64149(11) 0.0666(5) Uani 1 1 d . . . . .
H20A H 0.4567 1.1145 0.6554 0.100 Uiso 1 1 calc R U . . .
H20B H 0.4194 1.1287 0.6903 0.100 Uiso 1 1 calc R U . . .
H20C H 0.3944 1.2341 0.6083 0.100 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
O1 C1 1.2201(16) . ?
O2 C16 1.3693(15) . ?
O2 C19 1.4101(19) . ?
O3 C17 1.3723(15) . ?
O3 C20 1.424(2) . ?
C1 C2 1.4529(19) . ?
C1 C10 1.5279(18) . ?
C2 C3 1.330(2) . ?
C2 H2 0.9300 . ?
C3 C4 1.449(2) . ?
C3 H3 0.9300 . ?
C4 C5 1.395(2) . ?
C4 C9 1.4056(18) . ?
C5 C6 1.374(2) . ?
C5 H5 0.9300 . ?
C6 C7 1.376(2) . ?
C6 H6 0.9300 . ?
C7 C8 1.387(2) . ?
C7 H7 0.9300 . ?
C8 C9 1.3888(19) . ?
C8 H8 0.9300 . ?
C9 C10 1.5244(17) . ?
C10 C14 1.5241(16) . ?
C10 C11 1.5789(17) . ?
C11 C12 1.5274(19) . ?
C11 H11A 0.9700 . ?
C11 H11B 0.9700 . ?
C12 C13 1.5048(17) . ?
C12 H12A 0.9700 . ?
C12 H12B 0.9700 . ?
C13 C14 1.3775(18) . ?
C13 C18 1.3918(18) . ?
C14 C15 1.3905(17) . ?
C15 C16 1.3817(17) . ?
C15 H15 0.9300 . ?
C16 C17 1.4095(19) . ?
C17 C18 1.3787(19) . ?
C18 H18 0.9300 . ?
C19 H19A 0.9600 . ?
C19 H19B 0.9600 . ?
C19 H19C 0.9600 . ?
C20 H20A 0.9600 . ?
C20 H20B 0.9600 . ?
C20 H20C 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
C16 O2 C19 116.67(11) . . ?
C17 O3 C20 116.54(11) . . ?
O1 C1 C2 121.15(13) . . ?
O1 C1 C10 120.08(12) . . ?
C2 C1 C10 118.59(12) . . ?
C3 C2 C1 121.90(13) . . ?
C3 C2 H2 119.0 . . ?
C1 C2 H2 119.0 . . ?
C2 C3 C4 122.80(12) . . ?
C2 C3 H3 118.6 . . ?
C4 C3 H3 118.6 . . ?
C5 C4 C9 119.76(13) . . ?
C5 C4 C3 120.17(13) . . ?
C9 C4 C3 119.98(12) . . ?
C6 C5 C4 121.00(14) . . ?
C6 C5 H5 119.5 . . ?
C4 C5 H5 119.5 . . ?
C5 C6 C7 119.48(14) . . ?
C5 C6 H6 120.3 . . ?
C7 C6 H6 120.3 . . ?
C6 C7 C8 120.42(14) . . ?
C6 C7 H7 119.8 . . ?
C8 C7 H7 119.8 . . ?
C7 C8 C9 121.07(13) . . ?
C7 C8 H8 119.5 . . ?
C9 C8 H8 119.5 . . ?
C8 C9 C4 118.19(12) . . ?
C8 C9 C10 121.78(11) . . ?
C4 C9 C10 119.93(12) . . ?
C14 C10 C9 112.67(10) . . ?
C14 C10 C1 112.96(10) . . ?
C9 C10 C1 113.96(10) . . ?
C14 C10 C11 100.39(10) . . ?
C9 C10 C11 108.96(10) . . ?
C1 C10 C11 106.76(10) . . ?
C12 C11 C10 106.07(10) . . ?
C12 C11 H11A 110.5 . . ?
C10 C11 H11A 110.5 . . ?
C12 C11 H11B 110.5 . . ?
C10 C11 H11B 110.5 . . ?
H11A C11 H11B 108.7 . . ?
C13 C12 C11 102.92(10) . . ?
C13 C12 H12A 111.2 . . ?
C11 C12 H12A 111.2 . . ?
C13 C12 H12B 111.2 . . ?
C11 C12 H12B 111.2 . . ?
H12A C12 H12B 109.1 . . ?
C14 C13 C18 120.37(11) . . ?
C14 C13 C12 111.23(11) . . ?
C18 C13 C12 128.40(12) . . ?
C13 C14 C15 120.72(11) . . ?
C13 C14 C10 111.52(10) . . ?
C15 C14 C10 127.75(11) . . ?
C16 C15 C14 119.21(11) . . ?
C16 C15 H15 120.4 . . ?
C14 C15 H15 120.4 . . ?
O2 C16 C15 124.91(12) . . ?
O2 C16 C17 114.92(11) . . ?
C15 C16 C17 120.17(11) . . ?
O3 C17 C18 124.56(12) . . ?
O3 C17 C16 115.53(11) . . ?
C18 C17 C16 119.91(11) . . ?
C17 C18 C13 119.58(12) . . ?
C17 C18 H18 120.2 . . ?
C13 C18 H18 120.2 . . ?
O2 C19 H19A 109.5 . . ?
O2 C19 H19B 109.5 . . ?
H19A C19 H19B 109.5 . . ?
O2 C19 H19C 109.5 . . ?
H19A C19 H19C 109.5 . . ?
H19B C19 H19C 109.5 . . ?
O3 C20 H20A 109.5 . . ?
O3 C20 H20B 109.5 . . ?
H20A C20 H20B 109.5 . . ?
O3 C20 H20C 109.5 . . ?
H20A C20 H20C 109.5 . . ?
H20B C20 H20C 109.5 . . ?

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_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
O1 C1 C2 C3 -177.08(13) . . . . ?
C10 C1 C2 C3 7.80(19) . . . . ?
C1 C2 C3 C4 2.7(2) . . . . ?
C2 C3 C4 C5 175.04(13) . . . . ?
C2 C3 C4 C9 -1.7(2) . . . . ?
C9 C4 C5 C6 1.7(2) . . . . ?
C3 C4 C5 C6 -175.06(13) . . . . ?
C4 C5 C6 C7 0.9(2) . . . . ?
C5 C6 C7 C8 -2.1(2) . . . . ?
C6 C7 C8 C9 0.7(2) . . . . ?
C7 C8 C9 C4 1.81(19) . . . . ?
C7 C8 C9 C10 -174.41(12) . . . . ?
C5 C4 C9 C8 -2.97(18) . . . . ?
C3 C4 C9 C8 173.75(12) . . . . ?
C5 C4 C9 C10 173.32(11) . . . . ?
C3 C4 C9 C10 -9.96(18) . . . . ?
C8 C9 C10 C14 -34.42(15) . . . . ?
C4 C9 C10 C14 149.43(11) . . . . ?
C8 C9 C10 C1 -164.82(11) . . . . ?
C4 C9 C10 C1 19.02(16) . . . . ?
C8 C9 C10 C11 76.08(14) . . . . ?
C4 C9 C10 C11 -100.08(13) . . . . ?
O1 C1 C10 C14 36.74(16) . . . . ?
C2 C1 C10 C14 -148.08(11) . . . . ?
O1 C1 C10 C9 167.00(11) . . . . ?
C2 C1 C10 C9 -17.82(16) . . . . ?
O1 C1 C10 C11 -72.66(14) . . . . ?
C2 C1 C10 C11 102.52(13) . . . . ?
C14 C10 C11 C12 27.01(13) . . . . ?
C9 C10 C11 C12 -91.50(12) . . . . ?
C1 C10 C11 C12 145.00(11) . . . . ?
C10 C11 C12 C13 -26.40(14) . . . . ?
C11 C12 C13 C14 15.67(15) . . . . ?
C11 C12 C13 C18 -164.62(14) . . . . ?
C18 C13 C14 C15 1.4(2) . . . . ?
C12 C13 C14 C15 -178.88(12) . . . . ?
C18 C13 C14 C10 -177.70(12) . . . . ?
C12 C13 C14 C10 2.04(15) . . . . ?
C9 C10 C14 C13 97.69(13) . . . . ?
C1 C10 C14 C13 -131.40(12) . . . . ?
C11 C10 C14 C13 -18.06(13) . . . . ?
C9 C10 C14 C15 -81.30(15) . . . . ?
C1 C10 C14 C15 49.61(17) . . . . ?
C11 C10 C14 C15 162.94(13) . . . . ?
C13 C14 C15 C16 0.34(19) . . . . ?
C10 C14 C15 C16 179.25(12) . . . . ?
C19 O2 C16 C15 -13.6(2) . . . . ?
C19 O2 C16 C17 166.83(15) . . . . ?
C14 C15 C16 O2 178.71(12) . . . . ?
C14 C15 C16 C17 -1.72(19) . . . . ?
C20 O3 C17 C18 0.6(2) . . . . ?
C20 O3 C17 C16 -179.71(14) . . . . ?
O2 C16 C17 O3 1.26(17) . . . . ?
C15 C16 C17 O3 -178.36(12) . . . . ?
O2 C16 C17 C18 -178.99(12) . . . . ?
C15 C16 C17 C18 1.4(2) . . . . ?
O3 C17 C18 C13 -179.95(12) . . . . ?
C16 C17 C18 C13 0.3(2) . . . . ?
C14 C13 C18 C17 -1.7(2) . . . . ?
C12 C13 C18 C17 178.61(13) . . . . ?

_refine_diff_density_max         0.192
_refine_diff_density_min         -0.221
_refine_diff_density_rms         0.055

_shelxl_version_number           2013-4

