# Electronic Supplementary Material (ESI) for ChemComm.
# 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. 
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data_a50409a
_database_code_depnum_ccdc_archive 'CCDC 1420849'
_audit_update_record             
;
2015-08-27 deposited with the CCDC.
2015-09-17 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2013
_chemical_name_systematic        
; 
 ? 
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C25 H18 O2'
_chemical_formula_weight         350.39

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      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                   9.284(8)
_cell_length_b                   9.320(8)
_cell_length_c                   11.404(9)
_cell_angle_alpha                77.278(10)
_cell_angle_beta                 70.928(9)
_cell_angle_gamma                88.102(9)
_cell_volume                     908.9(13)
_cell_formula_units_Z            2
_cell_measurement_temperature    293(2)
_cell_measurement_reflns_used    1537
_cell_measurement_theta_min      2.62
_cell_measurement_theta_max      25.25

_exptl_crystal_description       prism
_exptl_crystal_colour            colourless
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.280
_exptl_crystal_F_000             368
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.080
_exptl_absorpt_coefficient_mu    0.080
_shelx_estimated_absorpt_T_min   0.969
_shelx_estimated_absorpt_T_max   0.994
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.604
_exptl_absorpt_correction_T_max  0.745
_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  'Bruker APEX-II CCD'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            4264
_diffrn_reflns_av_unetI/netI     0.0365
_diffrn_reflns_av_R_equivalents  0.0168
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_theta_min         1.938
_diffrn_reflns_theta_max         25.097
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 0.962
_diffrn_measured_fraction_theta_full 0.946
_diffrn_reflns_Laue_measured_fraction_max 0.962
_diffrn_reflns_Laue_measured_fraction_full 0.946
_diffrn_reflns_point_group_measured_fraction_max 0.962
_diffrn_reflns_point_group_measured_fraction_full 0.946
_reflns_number_total             3119
_reflns_number_gt                2171
_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 APEX2'
_computing_cell_refinement       'Bruker SAINT'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_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)+(0.0937P)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     SHELXL
_refine_ls_extinction_coef       0.020(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^
_refine_ls_number_reflns         3119
_refine_ls_number_parameters     245
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0660
_refine_ls_R_factor_gt           0.0441
_refine_ls_wR_factor_ref         0.1499
_refine_ls_wR_factor_gt          0.1293
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_restrained_S_all      1.039
_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 0.9287(2) 0.8539(2) 0.44335(15) 0.0984(6) Uani 1 1 d . . . . .
O2 O 0.77170(16) 0.90676(15) 0.61737(13) 0.0629(4) Uani 1 1 d . . . . .
C1 C 0.8951(2) 0.8358(3) 0.5559(2) 0.0649(6) Uani 1 1 d . . . . .
C2 C 0.9811(2) 0.7435(3) 0.6331(2) 0.0685(6) Uani 1 1 d . . . . .
H2A H 1.0002 0.8004 0.6886 0.082 Uiso 1 1 calc R U . . .
H2B H 1.0794 0.7251 0.5756 0.082 Uiso 1 1 calc R U . . .
C3 C 0.9052(2) 0.5943(3) 0.7156(2) 0.0669(6) Uani 1 1 d . . . . .
H3A H 0.9734 0.5177 0.6896 0.080 Uiso 1 1 calc R U . . .
H3B H 0.8958 0.5926 0.8031 0.080 Uiso 1 1 calc R U . . .
C4 C 0.74937(19) 0.5550(2) 0.71224(17) 0.0489(5) Uani 1 1 d . . . . .
C5 C 0.7295(2) 0.4395(2) 0.66217(19) 0.0553(5) Uani 1 1 d . . . . .
H5 H 0.8136 0.3860 0.6290 0.066 Uiso 1 1 calc R U . . .
C6 C 0.5857(2) 0.39833(19) 0.65901(17) 0.0501(5) Uani 1 1 d . . . . .
C7 C 0.5645(3) 0.2798(2) 0.6046(2) 0.0643(6) Uani 1 1 d . . . . .
H7 H 0.6471 0.2244 0.5721 0.077 Uiso 1 1 calc R U . . .
C8 C 0.4250(3) 0.2467(2) 0.5995(2) 0.0691(6) Uani 1 1 d . . . . .
H8 H 0.4135 0.1700 0.5627 0.083 Uiso 1 1 calc R U . . .
C9 C 0.2987(3) 0.3282(2) 0.6498(2) 0.0641(6) Uani 1 1 d . . . . .
H9 H 0.2039 0.3047 0.6462 0.077 Uiso 1 1 calc R U . . .
C10 C 0.3133(2) 0.4401(2) 0.70315(19) 0.0546(5) Uani 1 1 d . . . . .
H10 H 0.2280 0.4925 0.7355 0.066 Uiso 1 1 calc R U . . .
C11 C 0.45672(19) 0.48036(18) 0.71136(16) 0.0434(4) Uani 1 1 d . . . . .
C12 C 0.47614(18) 0.59881(17) 0.76608(16) 0.0408(4) Uani 1 1 d . . . . .
C13 C 0.61965(18) 0.63567(18) 0.76683(16) 0.0421(4) Uani 1 1 d . . . . .
C14 C 0.64331(18) 0.75616(18) 0.82658(17) 0.0446(5) Uani 1 1 d . . . . .
C15 C 0.7248(2) 0.8860(2) 0.75179(17) 0.0481(5) Uani 1 1 d . . . . .
C16 C 0.7537(2) 0.9982(2) 0.8033(2) 0.0579(5) Uani 1 1 d . . . . .
H16 H 0.8068 1.0841 0.7508 0.069 Uiso 1 1 calc R U . . .
C17 C 0.7029(2) 0.9813(2) 0.9337(2) 0.0609(6) Uani 1 1 d . . . . .
H17 H 0.7215 1.0562 0.9695 0.073 Uiso 1 1 calc R U . . .
C18 C 0.6238(2) 0.8528(2) 1.0115(2) 0.0573(5) Uani 1 1 d . . . . .
H18 H 0.5916 0.8407 1.0994 0.069 Uiso 1 1 calc R U . . .
C19 C 0.5932(2) 0.7434(2) 0.95859(17) 0.0485(5) Uani 1 1 d . . . . .
H19 H 0.5379 0.6588 1.0117 0.058 Uiso 1 1 calc R U . . .
C20 C 0.34001(19) 0.68374(18) 0.82154(17) 0.0433(4) Uani 1 1 d . . . . .
C21 C 0.3222(2) 0.8263(2) 0.7599(2) 0.0552(5) Uani 1 1 d . . . . .
H21 H 0.3982 0.8718 0.6857 0.066 Uiso 1 1 calc R U . . .
C22 C 0.1925(3) 0.9011(2) 0.8079(2) 0.0667(6) Uani 1 1 d . . . . .
H22 H 0.1819 0.9964 0.7660 0.080 Uiso 1 1 calc R U . . .
C23 C 0.0788(2) 0.8345(2) 0.9178(2) 0.0657(6) Uani 1 1 d . . . . .
H23 H -0.0085 0.8846 0.9499 0.079 Uiso 1 1 calc R U . . .
C24 C 0.0950(2) 0.6948(3) 0.9792(2) 0.0736(7) Uani 1 1 d . . . . .
H24 H 0.0187 0.6498 1.0533 0.088 Uiso 1 1 calc R U . . .
C25 C 0.2247(2) 0.6198(2) 0.9314(2) 0.0652(6) Uani 1 1 d . . . . .
H25 H 0.2343 0.5246 0.9742 0.078 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 1.191(3) . ?
O2 C1 1.368(3) . ?
O2 C15 1.420(2) . ?
C1 C2 1.495(3) . ?
C2 C3 1.539(3) . ?
C3 C4 1.518(3) . ?
C4 C5 1.368(3) . ?
C4 C13 1.435(2) . ?
C5 C6 1.415(3) . ?
C6 C7 1.428(3) . ?
C6 C11 1.431(3) . ?
C7 C8 1.364(3) . ?
C8 C9 1.405(3) . ?
C9 C10 1.349(3) . ?
C10 C11 1.433(3) . ?
C11 C12 1.425(3) . ?
C12 C13 1.390(3) . ?
C12 C20 1.502(2) . ?
C13 C14 1.492(3) . ?
C14 C15 1.396(3) . ?
C14 C19 1.401(3) . ?
C15 C16 1.380(3) . ?
C16 C17 1.379(3) . ?
C17 C18 1.387(3) . ?
C18 C19 1.373(3) . ?
C20 C25 1.382(3) . ?
C20 C21 1.392(3) . ?
C21 C22 1.385(3) . ?
C22 C23 1.381(3) . ?
C23 C24 1.365(3) . ?
C24 C25 1.385(3) . ?

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
C1 O2 C15 119.73(15) . . ?
O1 C1 O2 117.6(2) . . ?
O1 C1 C2 124.1(2) . . ?
O2 C1 C2 118.25(18) . . ?
C1 C2 C3 116.83(17) . . ?
C4 C3 C2 117.22(17) . . ?
C5 C4 C13 119.24(17) . . ?
C5 C4 C3 120.82(17) . . ?
C13 C4 C3 119.89(18) . . ?
C4 C5 C6 122.42(17) . . ?
C5 C6 C7 122.78(18) . . ?
C5 C6 C11 118.38(18) . . ?
C7 C6 C11 118.84(19) . . ?
C8 C7 C6 121.0(2) . . ?
C7 C8 C9 120.1(2) . . ?
C10 C9 C8 120.8(2) . . ?
C9 C10 C11 121.77(19) . . ?
C12 C11 C6 119.45(17) . . ?
C12 C11 C10 123.11(16) . . ?
C6 C11 C10 117.42(18) . . ?
C13 C12 C11 120.22(15) . . ?
C13 C12 C20 120.67(16) . . ?
C11 C12 C20 119.11(15) . . ?
C12 C13 C4 120.27(16) . . ?
C12 C13 C14 121.63(14) . . ?
C4 C13 C14 118.08(15) . . ?
C15 C14 C19 116.61(17) . . ?
C15 C14 C13 120.57(17) . . ?
C19 C14 C13 122.74(16) . . ?
C16 C15 C14 122.51(18) . . ?
C16 C15 O2 118.80(17) . . ?
C14 C15 O2 118.57(17) . . ?
C17 C16 C15 119.11(19) . . ?
C16 C17 C18 120.2(2) . . ?
C19 C18 C17 120.0(2) . . ?
C18 C19 C14 121.57(18) . . ?
C25 C20 C21 118.01(17) . . ?
C25 C20 C12 120.98(15) . . ?
C21 C20 C12 120.92(16) . . ?
C22 C21 C20 120.63(19) . . ?
C23 C22 C21 120.18(19) . . ?
C24 C23 C22 119.69(19) . . ?
C23 C24 C25 120.3(2) . . ?
C20 C25 C24 121.23(19) . . ?

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
C15 O2 C1 O1 178.53(17) . . . . ?
C15 O2 C1 C2 -2.8(2) . . . . ?
O1 C1 C2 C3 -107.0(2) . . . . ?
O2 C1 C2 C3 74.5(2) . . . . ?
C1 C2 C3 C4 -0.6(3) . . . . ?
C2 C3 C4 C5 114.1(2) . . . . ?
C2 C3 C4 C13 -68.5(3) . . . . ?
C13 C4 C5 C6 1.7(3) . . . . ?
C3 C4 C5 C6 179.12(17) . . . . ?
C4 C5 C6 C7 178.67(17) . . . . ?
C4 C5 C6 C11 -0.6(3) . . . . ?
C5 C6 C7 C8 -177.76(19) . . . . ?
C11 C6 C7 C8 1.5(3) . . . . ?
C6 C7 C8 C9 -0.9(3) . . . . ?
C7 C8 C9 C10 0.2(3) . . . . ?
C8 C9 C10 C11 -0.2(3) . . . . ?
C5 C6 C11 C12 -0.8(2) . . . . ?
C7 C6 C11 C12 179.95(16) . . . . ?
C5 C6 C11 C10 177.87(16) . . . . ?
C7 C6 C11 C10 -1.4(2) . . . . ?
C9 C10 C11 C12 179.39(17) . . . . ?
C9 C10 C11 C6 0.8(3) . . . . ?
C6 C11 C12 C13 1.0(2) . . . . ?
C10 C11 C12 C13 -177.61(15) . . . . ?
C6 C11 C12 C20 -179.63(14) . . . . ?
C10 C11 C12 C20 1.8(3) . . . . ?
C11 C12 C13 C4 0.2(2) . . . . ?
C20 C12 C13 C4 -179.25(15) . . . . ?
C11 C12 C13 C14 -178.23(14) . . . . ?
C20 C12 C13 C14 2.4(2) . . . . ?
C5 C4 C13 C12 -1.5(3) . . . . ?
C3 C4 C13 C12 -178.94(16) . . . . ?
C5 C4 C13 C14 176.96(16) . . . . ?
C3 C4 C13 C14 -0.5(2) . . . . ?
C12 C13 C14 C15 -111.87(19) . . . . ?
C4 C13 C14 C15 69.7(2) . . . . ?
C12 C13 C14 C19 71.5(2) . . . . ?
C4 C13 C14 C19 -106.94(18) . . . . ?
C19 C14 C15 C16 -1.0(2) . . . . ?
C13 C14 C15 C16 -177.82(16) . . . . ?
C19 C14 C15 O2 -177.09(14) . . . . ?
C13 C14 C15 O2 6.1(2) . . . . ?
C1 O2 C15 C16 106.2(2) . . . . ?
C1 O2 C15 C14 -77.5(2) . . . . ?
C14 C15 C16 C17 1.2(3) . . . . ?
O2 C15 C16 C17 177.27(16) . . . . ?
C15 C16 C17 C18 0.1(3) . . . . ?
C16 C17 C18 C19 -1.4(3) . . . . ?
C17 C18 C19 C14 1.6(3) . . . . ?
C15 C14 C19 C18 -0.4(2) . . . . ?
C13 C14 C19 C18 176.34(16) . . . . ?
C13 C12 C20 C25 -111.5(2) . . . . ?
C11 C12 C20 C25 69.1(2) . . . . ?
C13 C12 C20 C21 72.2(2) . . . . ?
C11 C12 C20 C21 -107.2(2) . . . . ?
C25 C20 C21 C22 0.0(3) . . . . ?
C12 C20 C21 C22 176.48(18) . . . . ?
C20 C21 C22 C23 -0.1(3) . . . . ?
C21 C22 C23 C24 0.2(3) . . . . ?
C22 C23 C24 C25 -0.2(4) . . . . ?
C21 C20 C25 C24 0.0(3) . . . . ?
C12 C20 C25 C24 -176.4(2) . . . . ?
C23 C24 C25 C20 0.0(4) . . . . ?

_refine_diff_density_max         0.191
_refine_diff_density_min         -0.203
_refine_diff_density_rms         0.051

_shelxl_version_number           2013-2

