# Electronic Supplementary Material (ESI) for RSC Advances.
# This journal is © The Royal Society of Chemistry 2016

####################################################################### 
# 
# 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_exp_6821
_database_code_depnum_ccdc_archive 'CCDC 1484028'
_audit_update_record             
;
2016-06-08 deposited with the CCDC.
2016-08-15 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
; 
 ? 
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C27 H22 O3'
_chemical_formula_weight         394.45

loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0181 0.0091 '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 0.0492 0.0322 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   C2/c

loop_
_symmetry_equiv_pos_as_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                   15.5095(11)
_cell_length_b                   14.4666(10)
_cell_length_c                   18.4758(15)
_cell_angle_alpha                90.00
_cell_angle_beta                 99.080(7)
_cell_angle_gamma                90.00
_cell_volume                     4093.5(5)
_cell_formula_units_Z            8
_cell_measurement_temperature    293(2)
_cell_measurement_reflns_used    3047
_cell_measurement_theta_min      4.1810
_cell_measurement_theta_max      70.8990

_exptl_crystal_description       block
_exptl_crystal_colour            colorless
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.07
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.280
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1664
_exptl_absorpt_coefficient_mu    0.655
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.9494
_exptl_absorpt_correction_T_max  0.9556
_exptl_absorpt_process_details   sadabs

_exptl_special_details           
; 
 ? 
;

_diffrn_ambient_temperature      293(2)
_diffrn_radiation_wavelength     1.54184
_diffrn_radiation_type           CuK\a
_diffrn_radiation_source         'Enhance (Cu) X-ray Source'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini'
_diffrn_measurement_method       ?
_diffrn_detector_area_resol_mean ?
_diffrn_standards_number         ?
_diffrn_standards_interval_count ?
_diffrn_standards_interval_time  ?
_diffrn_standards_decay_%        ?
_diffrn_reflns_number            12352
_diffrn_reflns_av_R_equivalents  0.0471
_diffrn_reflns_av_sigmaI/netI    0.0427
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_theta_min         4.20
_diffrn_reflns_theta_max         67.23
_reflns_number_total             3686
_reflns_number_gt                2465
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       ?
_computing_cell_refinement       ?
_computing_data_reduction        ?
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics    ?
_computing_publication_material  ?

_refine_special_details          
; 
 Refinement of F² against ALL reflections.  The weighted R-factor wR and 
 goodness of fit S are based on F², conventional R-factors R are based 
 on F, with F set to zero for negative F². The threshold expression of 
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is 
 not relevant to the choice of reflections for refinement.  R-factors based 
 on F² are statistically about twice as large as those based on F, and R- 
 factors based on ALL data will be even larger. 
;

_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'calc w=1/[σ²(Fo²)+(0.0487P)²+0.6741P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    constr
_refine_ls_extinction_method     SHELXL
_refine_ls_extinction_coef       0.00075(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^
_refine_ls_number_reflns         3686
_refine_ls_number_parameters     274
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0735
_refine_ls_R_factor_gt           0.0449
_refine_ls_wR_factor_ref         0.1247
_refine_ls_wR_factor_gt          0.1044
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_restrained_S_all      1.032
_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_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
O1 O 0.60969(11) 0.17993(10) 0.78208(9) 0.0642(5) Uani 1 1 d . . .
O2 O 1.04386(11) 0.14194(12) 0.92698(10) 0.0826(6) Uani 1 1 d . . .
O3 O 0.85276(13) 0.57111(12) 0.55452(9) 0.0804(6) Uani 1 1 d . . .
C1 C 0.63658(13) 0.16086(14) 0.71605(12) 0.0502(5) Uani 1 1 d . . .
C2 C 0.59573(15) 0.08761(15) 0.67616(14) 0.0642(6) Uani 1 1 d . . .
H2 H 0.5530 0.0537 0.6944 0.077 Uiso 1 1 calc R . .
C3 C 0.61881(15) 0.06546(15) 0.60957(14) 0.0636(6) Uani 1 1 d . . .
H3 H 0.5916 0.0164 0.5825 0.076 Uiso 1 1 calc R . .
C4 C 0.68238(16) 0.11591(15) 0.58275(13) 0.0620(6) Uani 1 1 d . . .
H4 H 0.6984 0.1008 0.5378 0.074 Uiso 1 1 calc R . .
C5 C 0.72213(14) 0.18904(14) 0.62326(12) 0.0553(6) Uani 1 1 d . . .
H5 H 0.7646 0.2230 0.6047 0.066 Uiso 1 1 calc R . .
C6 C 0.70044(12) 0.21316(13) 0.69069(11) 0.0445(5) Uani 1 1 d . . .
C7 C 0.74725(12) 0.28977(12) 0.73896(11) 0.0428(5) Uani 1 1 d . . .
C8 C 0.68235(12) 0.32775(13) 0.78587(11) 0.0433(5) Uani 1 1 d . . .
C9 C 0.61898(13) 0.27011(14) 0.80670(11) 0.0493(5) Uani 1 1 d . . .
C10 C 0.56241(15) 0.29916(17) 0.85293(13) 0.0644(6) Uani 1 1 d . . .
H10 H 0.5208 0.2588 0.8661 0.077 Uiso 1 1 calc R . .
C11 C 0.56819(15) 0.38760(17) 0.87903(14) 0.0676(7) Uani 1 1 d . . .
H11 H 0.5308 0.4073 0.9106 0.081 Uiso 1 1 calc R . .
C12 C 0.62912(15) 0.44794(15) 0.85897(13) 0.0611(6) Uani 1 1 d . . .
H12 H 0.6323 0.5084 0.8763 0.073 Uiso 1 1 calc R . .
C13 C 0.68528(14) 0.41809(14) 0.81307(12) 0.0517(5) Uani 1 1 d . . .
H13 H 0.7262 0.4591 0.7998 0.062 Uiso 1 1 calc R . .
C14 C 0.82650(12) 0.24832(13) 0.79076(11) 0.0449(5) Uani 1 1 d . . .
C15 C 0.86693(14) 0.29880(14) 0.84991(12) 0.0578(6) Uani 1 1 d . . .
H15 H 0.8446 0.3566 0.8590 0.069 Uiso 1 1 calc R . .
C16 C 0.93940(14) 0.26658(15) 0.89609(13) 0.0609(6) Uani 1 1 d . . .
H16 H 0.9653 0.3026 0.9352 0.073 Uiso 1 1 calc R . .
C17 C 0.97320(14) 0.18101(15) 0.88406(13) 0.0574(6) Uani 1 1 d . . .
C18 C 0.93315(16) 0.12935(16) 0.82588(14) 0.0714(8) Uani 1 1 d . . .
H18 H 0.9550 0.0711 0.8174 0.086 Uiso 1 1 calc R . .
C19 C 0.86116(15) 0.16257(15) 0.77994(13) 0.0613(6) Uani 1 1 d . . .
H19 H 0.8354 0.1264 0.7408 0.074 Uiso 1 1 calc R . .
C20 C 1.08966(16) 0.19576(19) 0.98406(14) 0.0789(8) Uani 1 1 d . . .
H20A H 1.1088 0.2521 0.9642 0.118 Uiso 1 1 calc R . .
H20B H 1.1394 0.1619 1.0078 0.118 Uiso 1 1 calc R . .
H20C H 1.0520 0.2099 1.0191 0.118 Uiso 1 1 calc R . .
C21 C 0.77678(13) 0.36571(13) 0.69002(11) 0.0456(5) Uani 1 1 d . . .
C22 C 0.71509(14) 0.42432(15) 0.65157(12) 0.0571(6) Uani 1 1 d . . .
H22 H 0.6567 0.4171 0.6565 0.068 Uiso 1 1 calc R . .
C23 C 0.73771(16) 0.49322(15) 0.60610(13) 0.0626(6) Uani 1 1 d . . .
H23 H 0.6950 0.5320 0.5815 0.075 Uiso 1 1 calc R . .
C24 C 0.82361(16) 0.50399(15) 0.59753(12) 0.0586(6) Uani 1 1 d . . .
C25 C 0.88572(16) 0.44489(16) 0.63324(13) 0.0637(6) Uani 1 1 d . . .
H25 H 0.9436 0.4507 0.6264 0.076 Uiso 1 1 calc R . .
C26 C 0.86281(14) 0.37679(14) 0.67931(12) 0.0547(6) Uani 1 1 d . . .
H26 H 0.9057 0.3379 0.7034 0.066 Uiso 1 1 calc R . .
C27 C 0.7929(2) 0.64259(18) 0.52740(16) 0.0945(10) Uani 1 1 d . . .
H27A H 0.7473 0.6173 0.4917 0.142 Uiso 1 1 calc R . .
H27B H 0.8232 0.6899 0.5050 0.142 Uiso 1 1 calc R . .
H27C H 0.7681 0.6687 0.5672 0.142 Uiso 1 1 calc R . .


_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 1.378(2) . ?
O1 C9 1.382(2) . ?
O2 C17 1.369(2) . ?
O2 C20 1.409(3) . ?
O3 C24 1.376(2) . ?
O3 C27 1.426(3) . ?
C1 C6 1.385(3) . ?
C1 C2 1.386(3) . ?
C2 C3 1.372(3) . ?
C3 C4 1.380(3) . ?
C4 C5 1.384(3) . ?
C5 C6 1.385(3) . ?
C6 C7 1.532(2) . ?
C7 C8 1.530(3) . ?
C7 C21 1.538(3) . ?
C7 C14 1.554(3) . ?
C8 C9 1.389(3) . ?
C8 C13 1.398(3) . ?
C9 C10 1.383(3) . ?
C10 C11 1.365(3) . ?
C11 C12 1.380(3) . ?
C12 C13 1.377(3) . ?
C14 C19 1.379(3) . ?
C14 C15 1.380(3) . ?
C15 C16 1.380(3) . ?
C16 C17 1.376(3) . ?
C17 C18 1.375(3) . ?
C18 C19 1.378(3) . ?
C21 C22 1.387(3) . ?
C21 C26 1.389(3) . ?
C22 C23 1.384(3) . ?
C23 C24 1.375(3) . ?
C24 C25 1.376(3) . ?
C25 C26 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 O1 C9 116.75(16) . . ?
C17 O2 C20 117.91(19) . . ?
C24 O3 C27 117.4(2) . . ?
O1 C1 C6 121.50(18) . . ?
O1 C1 C2 116.56(19) . . ?
C6 C1 C2 121.9(2) . . ?
C3 C2 C1 119.6(2) . . ?
C2 C3 C4 120.0(2) . . ?
C3 C4 C5 119.5(2) . . ?
C4 C5 C6 121.9(2) . . ?
C5 C6 C1 117.05(19) . . ?
C5 C6 C7 123.07(18) . . ?
C1 C6 C7 119.78(18) . . ?
C8 C7 C6 107.21(15) . . ?
C8 C7 C21 111.11(15) . . ?
C6 C7 C21 109.41(16) . . ?
C8 C7 C14 108.47(16) . . ?
C6 C7 C14 109.60(15) . . ?
C21 C7 C14 110.96(15) . . ?
C9 C8 C13 116.47(19) . . ?
C9 C8 C7 119.93(17) . . ?
C13 C8 C7 123.52(17) . . ?
O1 C9 C10 116.55(19) . . ?
O1 C9 C8 121.15(18) . . ?
C10 C9 C8 122.3(2) . . ?
C11 C10 C9 119.4(2) . . ?
C10 C11 C12 120.5(2) . . ?
C13 C12 C11 119.6(2) . . ?
C12 C13 C8 121.8(2) . . ?
C19 C14 C15 116.87(19) . . ?
C19 C14 C7 123.12(18) . . ?
C15 C14 C7 119.99(18) . . ?
C14 C15 C16 122.3(2) . . ?
C17 C16 C15 119.9(2) . . ?
O2 C17 C18 116.8(2) . . ?
O2 C17 C16 124.6(2) . . ?
C18 C17 C16 118.6(2) . . ?
C17 C18 C19 121.0(2) . . ?
C18 C19 C14 121.4(2) . . ?
C22 C21 C26 117.2(2) . . ?
C22 C21 C7 119.50(18) . . ?
C26 C21 C7 123.25(19) . . ?
C23 C22 C21 122.0(2) . . ?
C24 C23 C22 119.6(2) . . ?
C23 C24 O3 124.0(2) . . ?
C23 C24 C25 119.5(2) . . ?
O3 C24 C25 116.5(2) . . ?
C24 C25 C26 120.6(2) . . ?
C25 C26 C21 121.0(2) . . ?

_diffrn_measured_fraction_theta_max 1.000
_diffrn_reflns_theta_full        67.23
_diffrn_measured_fraction_theta_full 1.000
_refine_diff_density_max         0.161
_refine_diff_density_min         -0.124
_refine_diff_density_rms         0.032
