Chemistry Reference
In-Depth Information
Monofunctional bidentate
OH
R
′
O
H
O
H
R
HC
N
N
HC
H
R′
R
′′
′′′
N
(R
′ =
alkyl or aryl)
HsalNR
Me, Bu
t
, Ph, CF
3
(R
′ =
R
′′ =
′
R
R
′
, R
′′ =
Me, CF
3
; Me, Ph;
(a)
(b)
R
′′′
=
alkyl or aryl)
(c)
Bifunctional tridentate
OH
OH
HO
C
NR
′′
OH
CN
R
′
R
′
(R
′ =
H or Me; R
′′ =
C
2
H
4
, CH
2
CHMe)
(R
′ =
H or Me)
(e)
(d)
Bifunctional tetradentate
OH
OH
HC
N
N
CH
B
(B = CH
2
CH
2
(salen H
2
), CH
2
CHMe
(salpnH
2
),
o
-C
6
H
4
(salphen H
2
))
(f)
R
′
R
′
O
O
H
H
N
N
B
R′′
R
′′
Me, Bu
t
, Ph, CF
3
;
(R
′ =
R
′′ =
R
′
, R
′′ =
Me, CF
3
; Me, Ph;
B
=
CH
2
CH
2
, CH
2
CHMe, C
6
H
4
)
(g)
Figure 2.15
Some of the types of mono- and bi-functional bi- and
tri-dentate Schiff bases and
ˇ
-ketoamines whose reactions with metal
alkoxides have been investigated.
Another noteworthy feature is that homoleptic derivatives of a wide variety of mono-
functional bidentate Schiff bases and
ˇ
-ketoamines with a number of metals (Nb, Ta,
Al, Sb) may be prepared by the alkoxide route. However, attempted preparations of
analogous derivatives of Ti and Zr have not been successful.
