Anthony KERMAGORET - THESES ET MEMOIRES DE L'UDS

Chapitre V
[Ni(NOPON Me2 )Cl2]. 37 The presence of the CH3 substituents of the oxazoline function can be
observed by the strong band at 1270 cm -1 for 7 which shifts to 1321 cm -1 for 8.
2.3 Synthesis of the iron complexes
The iron complexes 10-12 were prepared by reaction of one equiv of FeCl2·4H2O with
ligands 1-3 , respectively, in CH2Cl2 at room temperature (Scheme 5).
FeCl 2(H 2O) 4
O
O
N
Ph
P
1
Ph
P
N
N N
2
Ph
P
N N
3
O
O
CH 2Cl 2
rt, 12 h
CH 2Cl 2
rt, 12 h
CH 2Cl 2
rt, 12 h
O
O
N
N
N
O N
Scheme 5. Synthesis of iron complexes 10-12
N
Cl
10
P
P
Fe
N
Ph
11
Fe
12
N
P
Ph
P
N
Fe
N
O
N
Cl
Ph
P Ph
O
2+
(Fe 2OCl 6) 2-
O
2+
(Fe 2OCl 6) 2-
The iron complexes 10 and 11 precipitated instantaneously in CH2Cl2 and, after work-up, they
were isolated as red powders in 62% and 58% yield, respectively. The IR spectrum of
complex 10 was similar to that of the corresponding Ni complex 6. The strong IR band for the
C=N vibration of 11 at 1639 cm -1 is shifted compared to that of its corresponding nickel
complex 7 (1658 cm -1 ).
8