# Electronic Supplementary Material (ESI) for Polymer Chemistry.
# 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_ting1cult
_audit_block_doi                 10.5517/cc1418q5
_database_code_depnum_ccdc_archive 'CCDC 1043916'
_audit_update_record             
;
2015-01-16 deposited with the CCDC.
2016-02-26 downloaded from the CCDC.
;
_audit_creation_date             2014-10-24
_audit_creation_method           
;
  Olex2 1.2-beta
  (compiled May  9 2012 12:37:22, GUI svn.r4230)
;
_chemical_name_common            'Methyl model compound'
_chemical_name_systematic        
4-(4-methoxyphenyl)-6-methyl-3-phenyl-1H-isochromen-1-one
_chemical_formula_moiety         'C23 H18 O3'
_chemical_formula_sum            'C23 H18 O3'
_chemical_formula_weight         342.37
_chemical_absolute_configuration ad
_chemical_melting_point          ?

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   Pc

_space_group_IT_number           7

_space_group_name_Hall           'P -2yc'
loop_
_space_group_symop_id
_space_group_symop_operation_xyz
1 'x, y, z'
2 'x, -y, z+1/2'

_cell_length_a                   5.82646(9)
_cell_length_b                   9.44106(13)
_cell_length_c                   15.6160(3)
_cell_angle_alpha                90.00
_cell_angle_beta                 100.1098(15)
_cell_angle_gamma                90.00
_cell_volume                     845.67(2)
_cell_formula_units_Z            2
_cell_measurement_reflns_used    3805
_cell_measurement_temperature    99.9(4)
_cell_measurement_theta_max      74.9550
_cell_measurement_theta_min      5.4850
_exptl_absorpt_coefficient_mu    0.707
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.87146
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless

_exptl_crystal_density_diffrn    1.345
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.05
_exptl_special_details           
;
 ? 
;
_diffrn_reflns_av_R_equivalents  0.0120
_diffrn_reflns_av_unetI/netI     0.0155
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            4507
_diffrn_reflns_theta_full        66.50
_diffrn_reflns_theta_max         67.47
_diffrn_reflns_theta_min         4.68
_diffrn_ambient_temperature      99.9(4)
_diffrn_detector_area_resol_mean 10.3587
_diffrn_measured_fraction_theta_full 0.9963
_diffrn_measured_fraction_theta_max 0.9796
_diffrn_measurement_details      
;
#__ type_ start__ end____ width___ exp.time_
  1 omega   43.00  115.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703 -111.0000  150.0000 72

#__ type_ start__ end____ width___ exp.time_
  2 omega -119.00  -11.00   1.0000    2.5000
omega____ theta____ kappa____ phi______ frames
    -      -40.8203  -77.0000  -30.0000 108

#__ type_ start__ end____ width___ exp.time_
  3 omega  -49.00   27.00   1.0000    2.5000
omega____ theta____ kappa____ phi______ frames
    -      -40.8203   57.0000   90.0000 76

#__ type_ start__ end____ width___ exp.time_
  4 omega -111.00  -13.00   1.0000    2.5000
omega____ theta____ kappa____ phi______ frames
    -      -40.8203  -57.0000 -150.0000 98

#__ type_ start__ end____ width___ exp.time_
  5 omega   24.00   92.00   1.0000    2.5000
omega____ theta____ kappa____ phi______ frames
    -       40.8203 -125.0000 -180.0000 68

#__ type_ start__ end____ width___ exp.time_
  6 omega   34.00   90.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703  -30.0000  -60.0000 56

#__ type_ start__ end____ width___ exp.time_
  7 omega   33.00   85.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703  -30.0000   60.0000 52

#__ type_ start__ end____ width___ exp.time_
  8 omega   37.00   98.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703  -45.0000 -150.0000 61

#__ type_ start__ end____ width___ exp.time_
  9 omega   43.00   86.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703  -45.0000  120.0000 43

#__ type_ start__ end____ width___ exp.time_
 10 omega   45.00   87.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703  -30.0000  150.0000 42

#__ type_ start__ end____ width___ exp.time_
 11 omega   52.00  108.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703  -94.0000 -120.0000 56

#__ type_ start__ end____ width___ exp.time_
 12 omega   36.00  136.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703  -77.0000  -30.0000 100

#__ type_ start__ end____ width___ exp.time_
 13 omega   80.00  172.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703   30.0000   90.0000 92

#__ type_ start__ end____ width___ exp.time_
 14 omega   90.00  178.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -      110.5703   45.0000  -30.0000 88
;
_diffrn_measurement_device       'kappa diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       'ω scans'
_diffrn_orient_matrix_UB_11      -0.0027525000
_diffrn_orient_matrix_UB_12      0.1275298000
_diffrn_orient_matrix_UB_13      -0.0616980000
_diffrn_orient_matrix_UB_21      0.0443017000
_diffrn_orient_matrix_UB_22      -0.1001570000
_diffrn_orient_matrix_UB_23      -0.0732645000
_diffrn_orient_matrix_UB_31      -0.2648754000
_diffrn_orient_matrix_UB_32      -0.0182161000
_diffrn_orient_matrix_UB_33      -0.0294814000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.5418
_diffrn_source                   'sealed X-ray tube'
_diffrn_source_current           0.80
_diffrn_source_power             0.040
_diffrn_source_target            Cu
_diffrn_source_voltage           50
_diffrn_standards_decay_%        ?
_diffrn_standards_interval_count ?
_diffrn_standards_interval_time  ?
_diffrn_standards_number         ?
_reflns_number_gt                2170
_reflns_number_total             2180
_reflns_odcompleteness_completeness 99.63
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     68.13
_reflns_threshold_expression     >2sigma(I)
_computing_cell_refinement       
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
;
_computing_data_collection       
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
;
_computing_data_reduction        
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
;
_computing_molecular_graphics    
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material  
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement  
;
XL, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution    'J. Appl. Cryst. (2007) 40, 786-790'
_refine_diff_density_max         0.104
_refine_diff_density_min         -0.131
_refine_diff_density_rms         0.027
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.09(14)
_refine_ls_extinction_coef       ?
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         2180
_refine_ls_number_restraints     2
_refine_ls_R_factor_all          0.0222
_refine_ls_R_factor_gt           0.0221
_refine_ls_restrained_S_all      1.001
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     
'calc w=1/[σ²(Fo²)+(0.0349P)²+0.1239P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0557
_refine_ls_wR_factor_ref         0.0558
_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. 
;
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_atom_sites_solution_secondary   difmap
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 0.43775(19) 0.01097(10) 0.33327(7) 0.0302(3) Uani 1 1 d . . .
O2 O 0.36661(18) 0.23629(9) 0.35601(7) 0.0246(2) Uani 1 1 d . . .
O3 O 0.67017(19) 0.83918(10) 0.70035(7) 0.0270(2) Uani 1 1 d . . .
C1 C 0.5047(3) 0.11713(14) 0.37281(10) 0.0253(3) Uani 1 1 d . . .
C2 C 0.7176(3) 0.13254(14) 0.43623(10) 0.0242(3) Uani 1 1 d . . .
C3 C 0.8820(3) 0.02233(15) 0.44738(10) 0.0272(3) Uani 1 1 d . . .
H3 H 0.8544 -0.0608 0.4129 0.033 Uiso 1 1 calc R . .
C4 C 1.0822(3) 0.03435(16) 0.50787(10) 0.0293(3) Uani 1 1 d . . .
H4 H 1.1967 -0.0382 0.5123 0.035 Uiso 1 1 calc R . .
C5 C 1.1205(3) 0.15228(16) 0.56335(10) 0.0255(3) Uani 1 1 d . . .
C6 C 0.9556(3) 0.25994(14) 0.55320(10) 0.0233(3) Uani 1 1 d . . .
H6 H 0.9780 0.3388 0.5916 0.028 Uiso 1 1 calc R . .
C7 C 0.7563(3) 0.25564(14) 0.48769(9) 0.0217(3) Uani 1 1 d . . .
C8 C 0.5892(2) 0.37227(14) 0.47071(9) 0.0212(3) Uani 1 1 d . . .
C9 C 0.4098(3) 0.36054(13) 0.40383(10) 0.0217(3) Uani 1 1 d . . .
C10 C 1.3331(3) 0.15840(16) 0.63340(11) 0.0304(3) Uani 1 1 d . . .
H10A H 1.4719 0.1723 0.6069 0.046 Uiso 1 1 calc R . .
H10B H 1.3479 0.0694 0.6663 0.046 Uiso 1 1 calc R . .
H10C H 1.3182 0.2374 0.6728 0.046 Uiso 1 1 calc R . .
C11 C 0.6166(3) 0.49896(13) 0.52859(9) 0.0204(3) Uani 1 1 d . . .
C12 C 0.8062(2) 0.59003(14) 0.53437(9) 0.0209(3) Uani 1 1 d . . .
H12 H 0.9221 0.5724 0.4998 0.025 Uiso 1 1 calc R . .
C13 C 0.8295(2) 0.70685(14) 0.58989(9) 0.0205(3) Uani 1 1 d . . .
H13 H 0.9598 0.7683 0.5930 0.025 Uiso 1 1 calc R . .
C14 C 0.6601(2) 0.73255(14) 0.64069(9) 0.0216(3) Uani 1 1 d . . .
C15 C 0.4669(2) 0.64460(14) 0.63417(9) 0.0214(3) Uani 1 1 d . . .
H15 H 0.3489 0.6636 0.6676 0.026 Uiso 1 1 calc R . .
C16 C 0.4470(2) 0.52885(14) 0.57865(9) 0.0207(3) Uani 1 1 d . . .
H16 H 0.3149 0.4687 0.5747 0.025 Uiso 1 1 calc R . .
C17 C 0.8623(3) 0.93467(15) 0.70837(10) 0.0302(3) Uani 1 1 d . . .
H17A H 0.8620 0.9823 0.6526 0.045 Uiso 1 1 calc R . .
H17B H 1.0082 0.8819 0.7249 0.045 Uiso 1 1 calc R . .
H17C H 0.8486 1.0055 0.7531 0.045 Uiso 1 1 calc R . .
C18 C 0.2341(2) 0.46904(14) 0.36881(9) 0.0214(3) Uani 1 1 d . . .
C19 C 0.2911(3) 0.61362(15) 0.36936(10) 0.0241(3) Uani 1 1 d . . .
H19 H 0.4449 0.6433 0.3932 0.029 Uiso 1 1 calc R . .
C20 C 0.1255(3) 0.71338(15) 0.33543(10) 0.0265(3) Uani 1 1 d . . .
H20 H 0.1662 0.8109 0.3361 0.032 Uiso 1 1 calc R . .
C21 C -0.0996(3) 0.67146(15) 0.30051(10) 0.0276(3) Uani 1 1 d . . .
H21 H -0.2139 0.7399 0.2780 0.033 Uiso 1 1 calc R . .
C22 C -0.1565(3) 0.52838(16) 0.29875(10) 0.0268(3) Uani 1 1 d . . .
H22 H -0.3103 0.4992 0.2746 0.032 Uiso 1 1 calc R . .
C23 C 0.0089(2) 0.42785(15) 0.33183(9) 0.0238(3) Uani 1 1 d . . .
H23 H -0.0315 0.3303 0.3293 0.029 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 1.2056(17) . ?
O2 C1 1.3812(18) . ?
O2 C9 1.3896(16) . ?
O3 C14 1.3659(17) . ?
O3 C17 1.4254(18) . ?
C1 C2 1.452(2) . ?
C2 C3 1.404(2) . ?
C2 C7 1.4084(19) . ?
C3 C4 1.371(2) . ?
C4 C5 1.404(2) . ?
C5 C6 1.388(2) . ?
C5 C10 1.503(2) . ?
C6 C7 1.407(2) . ?
C7 C8 1.4629(19) . ?
C8 C9 1.346(2) . ?
C8 C11 1.4907(18) . ?
C9 C18 1.483(2) . ?
C11 C12 1.390(2) . ?
C11 C16 1.392(2) . ?
C12 C13 1.3948(19) . ?
C13 C14 1.392(2) . ?
C14 C15 1.388(2) . ?
C15 C16 1.387(2) . ?
C18 C19 1.4045(19) . ?
C18 C23 1.393(2) . ?
C19 C20 1.386(2) . ?
C20 C21 1.387(2) . ?
C21 C22 1.390(2) . ?
C22 C23 1.386(2) . ?

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 C9 122.75(12) . . ?
C14 O3 C17 117.73(11) . . ?
O1 C1 O2 117.04(14) . . ?
O1 C1 C2 126.39(14) . . ?
O2 C1 C2 116.57(12) . . ?
C3 C2 C1 119.52(13) . . ?
C3 C2 C7 120.22(14) . . ?
C7 C2 C1 120.24(12) . . ?
C4 C3 C2 120.23(14) . . ?
C3 C4 C5 120.99(13) . . ?
C4 C5 C10 120.07(13) . . ?
C6 C5 C4 118.55(14) . . ?
C6 C5 C10 121.35(14) . . ?
C5 C6 C7 121.88(13) . . ?
C2 C7 C8 118.88(13) . . ?
C6 C7 C2 117.88(13) . . ?
C6 C7 C8 123.24(13) . . ?
C7 C8 C11 119.80(12) . . ?
C9 C8 C7 118.69(12) . . ?
C9 C8 C11 121.50(12) . . ?
O2 C9 C18 109.67(12) . . ?
C8 C9 O2 121.94(12) . . ?
C8 C9 C18 128.38(12) . . ?
C12 C11 C8 122.35(12) . . ?
C12 C11 C16 118.19(12) . . ?
C16 C11 C8 119.46(13) . . ?
C11 C12 C13 121.26(13) . . ?
C14 C13 C12 119.40(13) . . ?
O3 C14 C13 124.56(12) . . ?
O3 C14 C15 115.36(12) . . ?
C15 C14 C13 120.06(12) . . ?
C16 C15 C14 119.66(13) . . ?
C15 C16 C11 121.40(13) . . ?
C19 C18 C9 121.43(13) . . ?
C23 C18 C9 119.94(12) . . ?
C23 C18 C19 118.60(13) . . ?
C20 C19 C18 120.65(13) . . ?
C19 C20 C21 120.24(13) . . ?
C20 C21 C22 119.39(14) . . ?
C23 C22 C21 120.69(14) . . ?
C22 C23 C18 120.40(13) . . ?

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 8.6(2) . . . . ?
O1 C1 C2 C7 -169.78(14) . . . . ?
O2 C1 C2 C3 -170.97(13) . . . . ?
O2 C1 C2 C7 10.61(19) . . . . ?
O2 C9 C18 C19 -146.30(13) . . . . ?
O2 C9 C18 C23 31.58(18) . . . . ?
O3 C14 C15 C16 -176.68(12) . . . . ?
C1 O2 C9 C8 -0.7(2) . . . . ?
C1 O2 C9 C18 178.91(12) . . . . ?
C1 C2 C3 C4 -179.02(14) . . . . ?
C1 C2 C7 C6 174.63(12) . . . . ?
C1 C2 C7 C8 -5.47(19) . . . . ?
C2 C3 C4 C5 4.0(2) . . . . ?
C2 C7 C8 C9 -3.00(19) . . . . ?
C2 C7 C8 C11 175.36(13) . . . . ?
C3 C2 C7 C6 -3.78(19) . . . . ?
C3 C2 C7 C8 176.11(13) . . . . ?
C3 C4 C5 C6 -2.8(2) . . . . ?
C3 C4 C5 C10 175.65(14) . . . . ?
C4 C5 C6 C7 -1.8(2) . . . . ?
C5 C6 C7 C2 5.0(2) . . . . ?
C5 C6 C7 C8 -174.86(13) . . . . ?
C6 C7 C8 C9 176.88(13) . . . . ?
C6 C7 C8 C11 -4.75(19) . . . . ?
C7 C2 C3 C4 -0.6(2) . . . . ?
C7 C8 C9 O2 6.2(2) . . . . ?
C7 C8 C9 C18 -173.29(13) . . . . ?
C7 C8 C11 C12 65.17(17) . . . . ?
C7 C8 C11 C16 -115.20(14) . . . . ?
C8 C9 C18 C19 33.3(2) . . . . ?
C8 C9 C18 C23 -148.85(14) . . . . ?
C8 C11 C12 C13 -179.14(13) . . . . ?
C8 C11 C16 C15 179.21(12) . . . . ?
C9 O2 C1 O1 172.62(12) . . . . ?
C9 O2 C1 C2 -7.73(19) . . . . ?
C9 C8 C11 C12 -116.51(15) . . . . ?
C9 C8 C11 C16 63.12(18) . . . . ?
C9 C18 C19 C20 179.23(13) . . . . ?
C9 C18 C23 C22 -179.87(13) . . . . ?
C10 C5 C6 C7 179.79(13) . . . . ?
C11 C8 C9 O2 -172.11(12) . . . . ?
C11 C8 C9 C18 8.4(2) . . . . ?
C11 C12 C13 C14 0.2(2) . . . . ?
C12 C11 C16 C15 -1.14(19) . . . . ?
C12 C13 C14 O3 176.62(13) . . . . ?
C12 C13 C14 C15 -1.7(2) . . . . ?
C13 C14 C15 C16 1.8(2) . . . . ?
C14 C15 C16 C11 -0.4(2) . . . . ?
C16 C11 C12 C13 1.23(19) . . . . ?
C17 O3 C14 C13 2.96(19) . . . . ?
C17 O3 C14 C15 -178.61(12) . . . . ?
C18 C19 C20 C21 0.1(2) . . . . ?
C19 C18 C23 C22 -1.9(2) . . . . ?
C19 C20 C21 C22 -0.9(2) . . . . ?
C20 C21 C22 C23 0.3(2) . . . . ?
C21 C22 C23 C18 1.1(2) . . . . ?
C23 C18 C19 C20 1.3(2) . . . . ?

_exptl_crystal_recrystallization_method 'Vapour Deposition'
