4,0x10 –3
Ag
2 O (2 eq),
[lr(-CI)(dfppy)
2 ]
2
1,2-dichloroethane,
Δ
70:30
3,0x10 –3
2,0x10 –3
1,0x10 –3
–1,0x10 –3
–2,0x10 –3
–3,0x10 –3
–4,0x10 –3
450
500
550
 / nm
ΔI
600
650
N
N
N
N
N
Ir
F
F
F
F
F
+
N
N
N
N
F
F
F
F
F
lr
N 1
N
+
N
l
–
N 3 C 2’
C
F
F
F
mer- (D
Ir )-78
76 %
76
mer- (D
Ir )-78
mer- (P,L
Ir )-77a 1
(P,L
Ir )-77a 1
mer- (M,D
Ir )-77a 1
mer- (M,L
Ir )-77a 2
(P,D
Ir )-77a 2
(M,L
Ir )-77a 2
(M,D
Ir )-77a 1
mer- (P,D
Ir )-77a 2
mer- (D
Ir )-79
mer- (L
Ir )-78
F
F
F
N
Ir
Ir
N
N
0,0
Fig. 4.30
Preparation of cycloiridiated complexes 77
1,2
. Chemical structures and CPL spectra of iridium(III) complexes (P,Λ
Ir )-77a
1
/(M,Δ
Ir )-77a
1
, (P,Δ
Ir )77a
2
/(M,Λ
Ir )-77a
2
, and (Δ
Ir )-78/(Λ
Ir )-78. Chemical structure of (Δ
Ir )-79. X-ray structure of stereoisomer(P,Λ
Ir )-77a
1
. All complexes have the mer
geometry
[49, 72]
4 Circularly Polarized Luminescence in Helicene and Helicenoid Derivatives
91