# Electronic Supplementary Material (ESI) for Organic Chemistry Frontiers.
# This journal is © the Partner Organisations 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. 
# 
#######################################################################

data_1
_database_code_depnum_ccdc_archive 'CCDC 1831764'
_audit_update_record             
;
2018-03-22 deposited with the CCDC.
2018-08-28 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            'C18 H18 O2'
_chemical_formula_weight         266.32

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           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                   9.0575(17)
_cell_length_b                   12.288(2)
_cell_length_c                   12.993(3)
_cell_angle_alpha                90
_cell_angle_beta                 94.793(2)
_cell_angle_gamma                90
_cell_volume                     1441.1(5)
_cell_formula_units_Z            4
_cell_measurement_temperature    293(2)
_cell_measurement_reflns_used    2014
_cell_measurement_theta_min      2.2850
_cell_measurement_theta_max      23.2580

_exptl_crystal_description       block
_exptl_crystal_colour            colorless
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.228
_exptl_crystal_F_000             568
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.450
_exptl_crystal_size_mid          0.330
_exptl_crystal_size_min          0.300
_exptl_absorpt_coefficient_mu    0.079
_shelx_estimated_absorpt_T_min   0.965
_shelx_estimated_absorpt_T_max   0.977
_exptl_absorpt_correction_type   multi-scan
_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     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   'fine-focus sealed tube'
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            7950
_diffrn_reflns_av_unetI/netI     0.0392
_diffrn_reflns_av_R_equivalents  0.0388
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_theta_min         2.641
_diffrn_reflns_theta_max         24.997
_diffrn_reflns_theta_full        24.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measured_fraction_theta_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_point_group_measured_fraction_full 0.997
_reflns_number_total             2537
_reflns_number_gt                1818
_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 SAINT'
_computing_structure_solution    'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_molecular_graphics    'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_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)+(0.0786P)²+0.1985P] 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         2537
_refine_ls_number_parameters     181
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0735
_refine_ls_R_factor_gt           0.0518
_refine_ls_wR_factor_ref         0.1550
_refine_ls_wR_factor_gt          0.1412
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_restrained_S_all      1.095
_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 0.24768(17) 0.93906(15) 0.99441(12) 0.0648(5) Uani 1 1 d . . . . .
O2 O -0.22845(15) 0.87719(12) 0.78784(14) 0.0683(5) Uani 1 1 d . . . . .
C1 C 0.11489(19) 0.87371(14) 0.83944(14) 0.0366(5) Uani 1 1 d . . . . .
C2 C 0.2541(2) 0.91845(16) 0.90325(16) 0.0433(5) Uani 1 1 d . . . . .
C3 C 0.3888(2) 0.93817(17) 0.85262(18) 0.0494(5) Uani 1 1 d . . . . .
H3 H 0.4696 0.9701 0.8898 0.059 Uiso 1 1 calc R U . . .
C4 C 0.3987(2) 0.91152(17) 0.75465(18) 0.0497(6) Uani 1 1 d . . . . .
H4 H 0.4864 0.9273 0.7253 0.060 Uiso 1 1 calc R U . . .
C5 C 0.2803(2) 0.85907(15) 0.69057(15) 0.0403(5) Uani 1 1 d . . . . .
C6 C 0.3031(2) 0.82636(19) 0.59002(17) 0.0544(6) Uani 1 1 d . . . . .
H6 H 0.3917 0.8440 0.5627 0.065 Uiso 1 1 calc R U . . .
C7 C 0.1979(3) 0.7690(2) 0.53101(18) 0.0631(7) Uani 1 1 d . . . . .
H7 H 0.2152 0.7469 0.4646 0.076 Uiso 1 1 calc R U . . .
C8 C 0.0661(3) 0.7444(2) 0.57111(19) 0.0648(7) Uani 1 1 d . . . . .
H8 H -0.0056 0.7048 0.5318 0.078 Uiso 1 1 calc R U . . .
C9 C 0.0396(2) 0.77807(18) 0.66931(17) 0.0529(6) Uani 1 1 d . . . . .
H9 H -0.0508 0.7616 0.6947 0.063 Uiso 1 1 calc R U . . .
C10 C 0.1451(2) 0.83620(14) 0.73127(14) 0.0366(5) Uani 1 1 d . . . . .
C11 C 0.00574(19) 0.97205(14) 0.83415(15) 0.0389(5) Uani 1 1 d . . . . .
H11 H -0.0048 0.9929 0.9060 0.047 Uiso 1 1 calc R U . . .
C12 C 0.0581(2) 1.07461(16) 0.78110(19) 0.0530(6) Uani 1 1 d . . . . .
H12A H 0.1330 1.1124 0.8253 0.064 Uiso 1 1 calc R U . . .
H12B H 0.0988 1.0566 0.7165 0.064 Uiso 1 1 calc R U . . .
C13 C -0.0802(3) 1.14355(18) 0.7622(2) 0.0624(7) Uani 1 1 d . . . . .
H13A H -0.1013 1.1826 0.8242 0.075 Uiso 1 1 calc R U . . .
H13B H -0.0701 1.1954 0.7070 0.075 Uiso 1 1 calc R U . . .
C14 C -0.1999(3) 1.0610(2) 0.7321(2) 0.0755(8) Uani 1 1 d . . . . .
H14A H -0.2941 1.0848 0.7547 0.091 Uiso 1 1 calc R U . . .
H14B H -0.2108 1.0514 0.6578 0.091 Uiso 1 1 calc R U . . .
C15 C -0.1517(2) 0.95657(16) 0.78463(17) 0.0474(5) Uani 1 1 d . . . . .
C16 C 0.0538(2) 0.77838(16) 0.90224(17) 0.0486(5) Uani 1 1 d . . . . .
H16A H 0.0407 0.8037 0.9716 0.058 Uiso 1 1 calc R U . . .
H16B H -0.0428 0.7576 0.8704 0.058 Uiso 1 1 calc R U . . .
C17 C 0.1520(3) 0.6802(2) 0.9089(2) 0.0676(7) Uani 1 1 d . . . . .
H17 H 0.1695 0.6487 0.8460 0.081 Uiso 1 1 calc R U . . .
C18 C 0.2141(4) 0.6345(2) 0.9875(3) 0.0920(10) Uani 1 1 d . . . . .
H18A H 0.2014 0.6617 1.0529 0.110 Uiso 1 1 calc R U . . .
H18B H 0.2728 0.5733 0.9802 0.110 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 C2 1.217(2) . ?
O2 C15 1.200(2) . ?
C1 C10 1.525(3) . ?
C1 C2 1.550(3) . ?
C1 C16 1.556(3) . ?
C1 C11 1.559(2) . ?
C2 C3 1.454(3) . ?
C3 C4 1.325(3) . ?
C3 H3 0.9300 . ?
C4 C5 1.452(3) . ?
C4 H4 0.9300 . ?
C5 C6 1.399(3) . ?
C5 C10 1.402(3) . ?
C6 C7 1.368(3) . ?
C6 H6 0.9300 . ?
C7 C8 1.375(3) . ?
C7 H7 0.9300 . ?
C8 C9 1.381(3) . ?
C8 H8 0.9300 . ?
C9 C10 1.394(3) . ?
C9 H9 0.9300 . ?
C11 C15 1.527(3) . ?
C11 C12 1.531(3) . ?
C11 H11 0.9800 . ?
C12 C13 1.515(3) . ?
C12 H12A 0.9700 . ?
C12 H12B 0.9700 . ?
C13 C14 1.512(3) . ?
C13 H13A 0.9700 . ?
C13 H13B 0.9700 . ?
C14 C15 1.502(3) . ?
C14 H14A 0.9700 . ?
C14 H14B 0.9700 . ?
C16 C17 1.497(3) . ?
C16 H16A 0.9700 . ?
C16 H16B 0.9700 . ?
C17 C18 1.257(4) . ?
C17 H17 0.9300 . ?
C18 H18A 0.9300 . ?
C18 H18B 0.9300 . ?

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
C10 C1 C2 113.54(15) . . ?
C10 C1 C16 110.78(15) . . ?
C2 C1 C16 107.19(16) . . ?
C10 C1 C11 110.82(15) . . ?
C2 C1 C11 103.47(14) . . ?
C16 C1 C11 110.78(14) . . ?
O1 C2 C3 121.02(19) . . ?
O1 C2 C1 119.44(18) . . ?
C3 C2 C1 119.52(18) . . ?
C4 C3 C2 121.35(19) . . ?
C4 C3 H3 119.3 . . ?
C2 C3 H3 119.3 . . ?
C3 C4 C5 123.68(19) . . ?
C3 C4 H4 118.2 . . ?
C5 C4 H4 118.2 . . ?
C6 C5 C10 119.77(19) . . ?
C6 C5 C4 120.23(18) . . ?
C10 C5 C4 119.93(18) . . ?
C7 C6 C5 121.4(2) . . ?
C7 C6 H6 119.3 . . ?
C5 C6 H6 119.3 . . ?
C6 C7 C8 119.1(2) . . ?
C6 C7 H7 120.4 . . ?
C8 C7 H7 120.4 . . ?
C7 C8 C9 120.5(2) . . ?
C7 C8 H8 119.7 . . ?
C9 C8 H8 119.7 . . ?
C8 C9 C10 121.5(2) . . ?
C8 C9 H9 119.2 . . ?
C10 C9 H9 119.2 . . ?
C9 C10 C5 117.58(18) . . ?
C9 C10 C1 121.34(16) . . ?
C5 C10 C1 121.09(17) . . ?
C15 C11 C12 103.09(16) . . ?
C15 C11 C1 119.25(15) . . ?
C12 C11 C1 116.02(15) . . ?
C15 C11 H11 105.8 . . ?
C12 C11 H11 105.8 . . ?
C1 C11 H11 105.8 . . ?
C13 C12 C11 104.49(16) . . ?
C13 C12 H12A 110.9 . . ?
C11 C12 H12A 110.9 . . ?
C13 C12 H12B 110.9 . . ?
C11 C12 H12B 110.9 . . ?
H12A C12 H12B 108.9 . . ?
C14 C13 C12 103.45(18) . . ?
C14 C13 H13A 111.1 . . ?
C12 C13 H13A 111.1 . . ?
C14 C13 H13B 111.1 . . ?
C12 C13 H13B 111.1 . . ?
H13A C13 H13B 109.0 . . ?
C15 C14 C13 106.29(19) . . ?
C15 C14 H14A 110.5 . . ?
C13 C14 H14A 110.5 . . ?
C15 C14 H14B 110.5 . . ?
C13 C14 H14B 110.5 . . ?
H14A C14 H14B 108.7 . . ?
O2 C15 C14 124.28(19) . . ?
O2 C15 C11 127.57(19) . . ?
C14 C15 C11 108.13(17) . . ?
C17 C16 C1 113.67(16) . . ?
C17 C16 H16A 108.8 . . ?
C1 C16 H16A 108.8 . . ?
C17 C16 H16B 108.8 . . ?
C1 C16 H16B 108.8 . . ?
H16A C16 H16B 107.7 . . ?
C18 C17 C16 129.1(3) . . ?
C18 C17 H17 115.4 . . ?
C16 C17 H17 115.4 . . ?
C17 C18 H18A 120.0 . . ?
C17 C18 H18B 120.0 . . ?
H18A C18 H18B 120.0 . . ?

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
C10 C1 C2 O1 -171.58(17) . . . . ?
C16 C1 C2 O1 -48.9(2) . . . . ?
C11 C1 C2 O1 68.2(2) . . . . ?
C10 C1 C2 C3 10.2(2) . . . . ?
C16 C1 C2 C3 132.90(18) . . . . ?
C11 C1 C2 C3 -109.98(18) . . . . ?
O1 C2 C3 C4 177.0(2) . . . . ?
C1 C2 C3 C4 -4.8(3) . . . . ?
C2 C3 C4 C5 -1.5(3) . . . . ?
C3 C4 C5 C6 -175.3(2) . . . . ?
C3 C4 C5 C10 1.5(3) . . . . ?
C10 C5 C6 C7 -2.2(3) . . . . ?
C4 C5 C6 C7 174.6(2) . . . . ?
C5 C6 C7 C8 0.9(4) . . . . ?
C6 C7 C8 C9 0.6(4) . . . . ?
C7 C8 C9 C10 -0.9(4) . . . . ?
C8 C9 C10 C5 -0.3(3) . . . . ?
C8 C9 C10 C1 179.7(2) . . . . ?
C6 C5 C10 C9 1.8(3) . . . . ?
C4 C5 C10 C9 -174.98(18) . . . . ?
C6 C5 C10 C1 -178.14(17) . . . . ?
C4 C5 C10 C1 5.0(3) . . . . ?
C2 C1 C10 C9 169.65(17) . . . . ?
C16 C1 C10 C9 49.0(2) . . . . ?
C11 C1 C10 C9 -74.4(2) . . . . ?
C2 C1 C10 C5 -10.4(2) . . . . ?
C16 C1 C10 C5 -131.04(18) . . . . ?
C11 C1 C10 C5 105.58(19) . . . . ?
C10 C1 C11 C15 63.3(2) . . . . ?
C2 C1 C11 C15 -174.67(16) . . . . ?
C16 C1 C11 C15 -60.1(2) . . . . ?
C10 C1 C11 C12 -60.9(2) . . . . ?
C2 C1 C11 C12 61.1(2) . . . . ?
C16 C1 C11 C12 175.70(17) . . . . ?
C15 C11 C12 C13 33.6(2) . . . . ?
C1 C11 C12 C13 165.76(18) . . . . ?
C11 C12 C13 C14 -38.6(2) . . . . ?
C12 C13 C14 C15 28.3(3) . . . . ?
C13 C14 C15 O2 170.7(2) . . . . ?
C13 C14 C15 C11 -7.5(3) . . . . ?
C12 C11 C15 O2 165.9(2) . . . . ?
C1 C11 C15 O2 35.6(3) . . . . ?
C12 C11 C15 C14 -16.0(2) . . . . ?
C1 C11 C15 C14 -146.3(2) . . . . ?
C10 C1 C16 C17 55.6(2) . . . . ?
C2 C1 C16 C17 -68.8(2) . . . . ?
C11 C1 C16 C17 178.98(19) . . . . ?
C1 C16 C17 C18 120.0(3) . . . . ?

_refine_diff_density_max         0.318
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.041

