Supplementary Material (ESI) for Journal of Materials Chemistry
This journal is © The Royal Society of Chemistry 2003

data_global
_journal_name_full               J.Mater.Chem.

_journal_coden_Cambridge         1145

loop_
_publ_author_name
'Fushun Liang'
'Jiangshan Chen'
'Xiabin Jing'
'Fushun Liang'
;
Dongge Ma
;
'Fosong Wang'
'Fushun Liang'
_publ_contact_author_address     
;
State Key Laboratory of Polymer Physics and Chemistry
Changchun Institute of Applied Chemistry
Remin road 159
Changchun
Jilin
130022
CHINA
;

_publ_contact_author_email       FSLIANG@CIAC.JL.CN

_publ_contact_author_name        'Dr Fushun Liang'

_publ_section_title              
;
Synthesis, structure characterization,
photoluminescent and electroluminescent properties of new conjugated
2,2'-(1,4-arylene divinylene)bis-8-substituted quinolines
;

data_lfs1a
_database_code_CSD               195035

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
; 
? 
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C28 H20 N2'
_chemical_formula_weight         384.46

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'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_symmetry_cell_setting           Triclinic
_symmetry_space_group_name_H-M   P-1

loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'

_cell_length_a                   4.05020(10)
_cell_length_b                   11.6459(6)
_cell_length_c                   20.9044(11)
_cell_angle_alpha                102.0590(10)
_cell_angle_beta                 90.274(5)
_cell_angle_gamma                91.559(5)
_cell_volume                     963.85(7)
_cell_formula_units_Z            2
_cell_measurement_temperature    223(2)
_cell_measurement_reflns_used    total
_cell_measurement_theta_min      1.00
_cell_measurement_theta_max      27.45

_exptl_crystal_description       block
_exptl_crystal_colour            yellow
_exptl_crystal_size_max          0.77
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.19
_exptl_crystal_density_meas      none
_exptl_crystal_density_diffrn    1.325
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             404
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.9425
_exptl_absorpt_correction_T_max  0.9851
_exptl_absorpt_process_details   
;
Higashi Progrom for Absorption Correcttion.
Rigaku Corporation£¬Tokyo£¬Japan.
;
_exptl_special_details           
; 
? 
;

_diffrn_ambient_temperature      223(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_radiation_source         'rotor x-ray tube'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       'oscillation '
_diffrn_detector_area_resol_mean 10.0
_diffrn_standards_number         none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_decay_%        none
_diffrn_reflns_number            5649
_diffrn_reflns_av_R_equivalents  0.0276
_diffrn_reflns_av_sigmaI/netI    0.0298
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_theta_min         1.79
_diffrn_reflns_theta_max         27.48
_reflns_number_total             3955
_reflns_number_gt                2837
_reflns_threshold_expression     >2sigma(I)

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

_refine_special_details          
; 
Refinement of F^2^ against ALL reflections.  The weighted R-factor wR and 
goodness of fit S are based on F^2^, conventional R-factors R are based 
on F, with F set to zero for negative F^2^. The threshold expression of 
F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is 
not relevant to the choice of reflections for refinement.  R-factors based 
on F^2^ 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/[\s^2^(Fo^2^)+(0.0844P)^2^+0.2941P] where P=(Fo^2^+2Fc^2^)/3'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    mixed
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       0
_refine_ls_number_reflns         3955
_refine_ls_number_parameters     351
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0733
_refine_ls_R_factor_gt           0.0541
_refine_ls_wR_factor_ref         0.1696
_refine_ls_wR_factor_gt          0.1584
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_restrained_S_all      1.084
_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
N1 N 0.3851(4) 0.59088(13) 0.22469(8) 0.0331(4) Uani 1 1 d . . .
N2 N 0.7504(4) 0.10859(13) 0.25209(8) 0.0326(4) Uani 1 1 d . . .
C1 C 0.2767(5) 0.63557(16) 0.17341(9) 0.0315(4) Uani 1 1 d . . .
C2 C 0.3251(6) 0.5708(2) 0.10999(10) 0.0426(5) Uani 1 1 d . . .
H2 H 0.415(6) 0.493(2) 0.1027(11) 0.049(7) Uiso 1 1 d . . .
C3 C 0.2216(6) 0.6125(2) 0.05751(10) 0.0452(5) Uani 1 1 d . . .
H3 H 0.265(6) 0.569(2) 0.0147(12) 0.051(7) Uiso 1 1 d . . .
C4 C 0.0609(6) 0.7192(2) 0.06571(11) 0.0444(5) Uani 1 1 d . . .
H4 H -0.021(7) 0.745(2) 0.0291(13) 0.060(8) Uiso 1 1 d . . .
C5 C 0.0109(5) 0.78428(19) 0.12633(10) 0.0383(5) Uani 1 1 d . . .
H5 H -0.117(6) 0.857(2) 0.1338(11) 0.052(7) Uiso 1 1 d . . .
C6 C 0.1183(5) 0.74515(16) 0.18185(9) 0.0320(4) Uani 1 1 d . . .
C7 C 0.0802(5) 0.80916(17) 0.24633(10) 0.0369(5) Uani 1 1 d . . .
H7 H -0.025(6) 0.884(2) 0.2529(12) 0.056(7) Uiso 1 1 d . . .
C8 C 0.1858(5) 0.76325(17) 0.29647(10) 0.0366(5) Uani 1 1 d . . .
H8 H 0.158(6) 0.8045(19) 0.3399(11) 0.040(6) Uiso 1 1 d . . .
C9 C 0.3346(5) 0.65140(16) 0.28385(9) 0.0317(4) Uani 1 1 d . . .
C10 C 0.4418(5) 0.59352(17) 0.33612(9) 0.0339(4) Uani 1 1 d . . .
H10 H 0.583(5) 0.5274(19) 0.3217(10) 0.035(6) Uiso 1 1 d . . .
C11 C 0.3535(5) 0.62236(17) 0.39805(10) 0.0346(4) Uani 1 1 d . . .
H11 H 0.219(6) 0.697(2) 0.4129(11) 0.050(7) Uiso 1 1 d . . .
C12 C 0.4369(5) 0.55907(16) 0.44931(9) 0.0307(4) Uani 1 1 d . . .
C13 C 0.6024(5) 0.45323(17) 0.43752(9) 0.0340(4) Uani 1 1 d . . .
H13 H 0.687(6) 0.4239(19) 0.3955(11) 0.042(6) Uiso 1 1 d . . .
C14 C 0.3351(5) 0.60396(17) 0.51255(9) 0.0339(4) Uani 1 1 d . . .
H14 H 0.225(6) 0.682(2) 0.5256(10) 0.040(6) Uiso 1 1 d . . .
C15 C 0.6820(5) 0.13441(16) 0.19326(9) 0.0320(4) Uani 1 1 d . . .
C16 C 0.4878(5) 0.05227(18) 0.14811(10) 0.0379(5) Uani 1 1 d . . .
H16 H 0.404(6) -0.024(2) 0.1616(11) 0.046(6) Uiso 1 1 d . . .
C17 C 0.4189(6) 0.0728(2) 0.08806(11) 0.0458(5) Uani 1 1 d . . .
H17 H 0.279(7) 0.011(2) 0.0581(12) 0.057(7) Uiso 1 1 d . . .
C18 C 0.5382(6) 0.1762(2) 0.07053(11) 0.0491(6) Uani 1 1 d . . .
H18 H 0.480(7) 0.186(2) 0.0258(13) 0.069(8) Uiso 1 1 d . . .
C19 C 0.7227(6) 0.2581(2) 0.11303(11) 0.0457(6) Uani 1 1 d . . .
H19 H 0.804(7) 0.330(2) 0.1029(12) 0.057(7) Uiso 1 1 d . . .
C20 C 0.7989(5) 0.24072(17) 0.17630(9) 0.0342(4) Uani 1 1 d . . .
C21 C 0.9892(6) 0.32099(17) 0.22253(11) 0.0406(5) Uani 1 1 d . . .
H21 H 1.077(5) 0.3997(18) 0.2132(10) 0.036(5) Uiso 1 1 d . . .
C22 C 1.0537(6) 0.29427(18) 0.28110(10) 0.0389(5) Uani 1 1 d . . .
H22 H 1.188(6) 0.356(2) 0.3145(11) 0.046(6) Uiso 1 1 d . . .
C23 C 0.9310(5) 0.18596(16) 0.29440(9) 0.0326(4) Uani 1 1 d . . .
C24 C 1.0091(5) 0.15879(18) 0.35759(9) 0.0354(4) Uani 1 1 d . . .
H24 H 1.170(5) 0.2127(18) 0.3857(10) 0.034(5) Uiso 1 1 d . . .
C25 C 0.8736(5) 0.06702(17) 0.37849(9) 0.0333(4) Uani 1 1 d . . .
H25 H 0.705(6) 0.018(2) 0.3513(11) 0.044(6) Uiso 1 1 d . . .
C26 C 0.9426(5) 0.03502(16) 0.44056(9) 0.0308(4) Uani 1 1 d . . .
C27 C 0.8058(5) -0.07088(17) 0.45230(9) 0.0336(4) Uani 1 1 d . . .
H27 H 0.659(6) -0.1247(19) 0.4193(10) 0.038(6) Uiso 1 1 d . . .
C28 C 1.1379(5) 0.10534(17) 0.49003(9) 0.0333(4) Uani 1 1 d . . .
H28 H 1.236(7) 0.182(2) 0.4844(12) 0.066(8) Uiso 1 1 d . . .

loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_23
_atom_site_aniso_U_13
_atom_site_aniso_U_12
N1 0.0393(9) 0.0283(8) 0.0334(8) 0.0100(6) 0.0024(7) 0.0005(7)
N2 0.0363(9) 0.0314(8) 0.0328(8) 0.0124(6) 0.0026(7) 0.0030(7)
C1 0.0323(10) 0.0289(9) 0.0348(10) 0.0104(7) 0.0009(8) -0.0024(8)
C2 0.0479(13) 0.0408(11) 0.0394(11) 0.0085(9) 0.0043(10) 0.0037(10)
C3 0.0491(13) 0.0547(13) 0.0310(11) 0.0077(9) -0.0002(9) -0.0035(11)
C4 0.0394(11) 0.0604(14) 0.0380(11) 0.0221(10) -0.0066(9) -0.0047(10)
C5 0.0349(11) 0.0414(11) 0.0424(11) 0.0178(9) -0.0037(9) -0.0015(9)
C6 0.0317(10) 0.0305(9) 0.0357(10) 0.0115(8) -0.0002(8) -0.0021(8)
C7 0.0418(11) 0.0292(9) 0.0405(11) 0.0082(8) 0.0026(9) 0.0052(8)
C8 0.0430(11) 0.0321(10) 0.0338(10) 0.0051(8) 0.0022(9) 0.0015(8)
C9 0.0328(10) 0.0319(9) 0.0324(10) 0.0119(7) 0.0005(8) -0.0030(8)
C10 0.0377(11) 0.0311(9) 0.0344(10) 0.0101(8) -0.0004(8) 0.0010(8)
C11 0.0370(11) 0.0338(10) 0.0344(10) 0.0107(8) -0.0023(8) 0.0010(8)
C12 0.0301(9) 0.0337(9) 0.0288(9) 0.0082(7) -0.0038(7) -0.0018(7)
C13 0.0361(10) 0.0376(10) 0.0284(9) 0.0070(8) 0.0012(8) 0.0028(8)
C14 0.0361(10) 0.0316(9) 0.0348(10) 0.0082(8) -0.0012(8) 0.0040(8)
C15 0.0341(10) 0.0314(9) 0.0324(10) 0.0096(8) 0.0058(8) 0.0087(8)
C16 0.0380(11) 0.0387(10) 0.0368(10) 0.0072(8) 0.0008(9) 0.0043(9)
C17 0.0411(12) 0.0582(14) 0.0375(12) 0.0080(10) -0.0024(10) 0.0076(11)
C18 0.0452(13) 0.0690(15) 0.0384(12) 0.0214(11) 0.0017(10) 0.0161(12)
C19 0.0500(13) 0.0499(13) 0.0455(12) 0.0268(10) 0.0116(10) 0.0167(11)
C20 0.0357(10) 0.0334(10) 0.0368(10) 0.0138(8) 0.0086(8) 0.0089(8)
C21 0.0485(12) 0.0302(10) 0.0450(12) 0.0121(9) 0.0108(10) 0.0040(9)
C22 0.0436(12) 0.0328(10) 0.0396(11) 0.0063(8) 0.0043(9) -0.0022(9)
C23 0.0347(10) 0.0329(9) 0.0308(9) 0.0073(7) 0.0039(8) 0.0042(8)
C24 0.0358(11) 0.0396(10) 0.0304(10) 0.0063(8) 0.0003(8) 0.0017(9)
C25 0.0360(10) 0.0341(9) 0.0295(9) 0.0056(8) 0.0005(8) 0.0040(8)
C26 0.0318(10) 0.0316(9) 0.0289(9) 0.0050(7) 0.0041(8) 0.0071(8)
C27 0.0351(10) 0.0346(10) 0.0304(10) 0.0052(8) -0.0010(8) 0.0014(8)
C28 0.0353(10) 0.0303(9) 0.0344(10) 0.0069(8) 0.0027(8) 0.0006(8)

_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
N1 C9 1.309(2) . ?
N1 C1 1.361(2) . ?
N2 C23 1.324(3) . ?
N2 C15 1.355(2) . ?
C1 C2 1.399(3) . ?
C1 C6 1.422(3) . ?
C2 C3 1.359(3) . ?
C3 C4 1.397(3) . ?
C4 C5 1.353(3) . ?
C5 C6 1.404(3) . ?
C6 C7 1.409(3) . ?
C7 C8 1.345(3) . ?
C8 C9 1.425(3) . ?
C9 C10 1.468(2) . ?
C10 C11 1.321(3) . ?
C11 C12 1.465(3) . ?
C12 C14 1.385(3) . ?
C12 C13 1.396(3) . ?
C13 C14 1.376(3) 2_666 ?
C14 C13 1.376(3) 2_666 ?
C15 C16 1.414(3) . ?
C15 C20 1.427(3) . ?
C16 C17 1.355(3) . ?
C17 C18 1.405(4) . ?
C18 C19 1.363(4) . ?
C19 C20 1.413(3) . ?
C20 C21 1.406(3) . ?
C21 C22 1.351(3) . ?
C22 C23 1.424(3) . ?
C23 C24 1.456(3) . ?
C24 C25 1.342(3) . ?
C25 C26 1.451(3) . ?
C26 C28 1.403(3) . ?
C26 C27 1.407(3) . ?
C27 C28 1.368(3) 2_756 ?
C28 C27 1.368(3) 2_756 ?

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
C9 N1 C1 117.86(16) . . ?
C23 N2 C15 117.82(16) . . ?
N1 C1 C2 118.33(17) . . ?
N1 C1 C6 122.65(17) . . ?
C2 C1 C6 119.02(18) . . ?
C3 C2 C1 120.1(2) . . ?
C2 C3 C4 120.9(2) . . ?
C5 C4 C3 120.5(2) . . ?
C4 C5 C6 120.4(2) . . ?
C5 C6 C7 123.52(18) . . ?
C5 C6 C1 119.02(18) . . ?
C7 C6 C1 117.45(17) . . ?
C8 C7 C6 119.13(18) . . ?
C7 C8 C9 119.88(18) . . ?
N1 C9 C8 122.96(17) . . ?
N1 C9 C10 114.17(16) . . ?
C8 C9 C10 122.87(17) . . ?
C11 C10 C9 125.52(19) . . ?
C10 C11 C12 125.81(19) . . ?
C14 C12 C13 117.97(17) . . ?
C14 C12 C11 118.41(17) . . ?
C13 C12 C11 123.57(17) . . ?
C14 C13 C12 120.86(18) 2_666 . ?
C13 C14 C12 121.17(18) 2_666 . ?
N2 C15 C16 117.96(17) . . ?
N2 C15 C20 122.02(18) . . ?
C16 C15 C20 120.02(17) . . ?
C17 C16 C15 120.2(2) . . ?
C16 C17 C18 120.1(2) . . ?
C19 C18 C17 121.3(2) . . ?
C18 C19 C20 120.5(2) . . ?
C21 C20 C19 123.59(19) . . ?
C21 C20 C15 118.59(17) . . ?
C19 C20 C15 117.8(2) . . ?
C22 C21 C20 118.67(18) . . ?
C21 C22 C23 119.63(19) . . ?
N2 C23 C22 123.26(18) . . ?
N2 C23 C24 118.39(17) . . ?
C22 C23 C24 118.35(18) . . ?
C25 C24 C23 123.30(19) . . ?
C24 C25 C26 125.88(19) . . ?
C28 C26 C27 118.09(17) . . ?
C28 C26 C25 123.11(18) . . ?
C27 C26 C25 118.81(17) . . ?
C28 C27 C26 121.32(18) 2_756 . ?
C27 C28 C26 120.59(18) 2_756 . ?

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
C9 N1 C1 C2 -179.07(18) . . . . ?
C9 N1 C1 C6 1.2(3) . . . . ?
N1 C1 C2 C3 -179.8(2) . . . . ?
C6 C1 C2 C3 0.0(3) . . . . ?
C1 C2 C3 C4 -1.1(3) . . . . ?
C2 C3 C4 C5 1.3(3) . . . . ?
C3 C4 C5 C6 -0.3(3) . . . . ?
C4 C5 C6 C7 178.8(2) . . . . ?
C4 C5 C6 C1 -0.8(3) . . . . ?
N1 C1 C6 C5 -179.32(18) . . . . ?
C2 C1 C6 C5 0.9(3) . . . . ?
N1 C1 C6 C7 1.1(3) . . . . ?
C2 C1 C6 C7 -178.67(18) . . . . ?
C5 C6 C7 C8 178.8(2) . . . . ?
C1 C6 C7 C8 -1.7(3) . . . . ?
C6 C7 C8 C9 0.1(3) . . . . ?
C1 N1 C9 C8 -2.9(3) . . . . ?
C1 N1 C9 C10 176.62(16) . . . . ?
C7 C8 C9 N1 2.3(3) . . . . ?
C7 C8 C9 C10 -177.14(19) . . . . ?
N1 C9 C10 C11 -163.9(2) . . . . ?
C8 C9 C10 C11 15.6(3) . . . . ?
C9 C10 C11 C12 174.58(18) . . . . ?
C10 C11 C12 C14 177.5(2) . . . . ?
C10 C11 C12 C13 -5.2(3) . . . . ?
C14 C12 C13 C14 -0.6(3) . . . 2_666 ?
C11 C12 C13 C14 -177.97(18) . . . 2_666 ?
C13 C12 C14 C13 0.6(3) . . . 2_666 ?
C11 C12 C14 C13 178.11(18) . . . 2_666 ?
C23 N2 C15 C16 -179.68(17) . . . . ?
C23 N2 C15 C20 0.2(3) . . . . ?
N2 C15 C16 C17 -178.49(18) . . . . ?
C20 C15 C16 C17 1.6(3) . . . . ?
C15 C16 C17 C18 -0.4(3) . . . . ?
C16 C17 C18 C19 -0.4(3) . . . . ?
C17 C18 C19 C20 0.0(3) . . . . ?
C18 C19 C20 C21 179.6(2) . . . . ?
C18 C19 C20 C15 1.2(3) . . . . ?
N2 C15 C20 C21 -0.4(3) . . . . ?
C16 C15 C20 C21 179.49(18) . . . . ?
N2 C15 C20 C19 178.15(17) . . . . ?
C16 C15 C20 C19 -2.0(3) . . . . ?
C19 C20 C21 C22 -178.5(2) . . . . ?
C15 C20 C21 C22 0.0(3) . . . . ?
C20 C21 C22 C23 0.5(3) . . . . ?
C15 N2 C23 C22 0.4(3) . . . . ?
C15 N2 C23 C24 -179.42(16) . . . . ?
C21 C22 C23 N2 -0.8(3) . . . . ?
C21 C22 C23 C24 179.03(19) . . . . ?
N2 C23 C24 C25 -8.8(3) . . . . ?
C22 C23 C24 C25 171.38(19) . . . . ?
C23 C24 C25 C26 179.59(17) . . . . ?
C24 C25 C26 C28 7.1(3) . . . . ?
C24 C25 C26 C27 -173.44(19) . . . . ?
C28 C26 C27 C28 -0.4(3) . . . 2_756 ?
C25 C26 C27 C28 -179.87(17) . . . 2_756 ?
C27 C26 C28 C27 0.4(3) . . . 2_756 ?
C25 C26 C28 C27 179.84(18) . . . 2_756 ?

_diffrn_measured_fraction_theta_max 0.892
_diffrn_reflns_theta_full        27.48
_diffrn_measured_fraction_theta_full 0.892
_refine_diff_density_max         0.192
_refine_diff_density_min         -0.242
_refine_diff_density_rms         0.059