Chemistry Reference
In-Depth Information
Table 4.21
Heterometallic alkoxides of niobium, chromium, tungsten, manganese, cobalt, nickel and copper
Coordination no.
M-O Bond lengths ( A)
Bond angles (
Ž
)
MOC
M
0
Compound
M
Terminal
Bridging
Reference
[
Pr
i
O
3
Nb
-OPr
i
2
,
2
-O
2
CMe
Cd
-
OPr
i
2
,
2
-O
2
CMe
Nb
OPr
i
3
]
NbO(OPr
i
), av. 2.00
(OAc), av. 2.167
CdO
OPr
i
), av. 2.312
(OAc), av. 2.265
6
6
NbO, av. 1.877
NbO, 151.0
517
[
Bu
t
O
Sn
-OBu
t
2
Cr
-OBu
t
]
2
4
3
SnO, 2.016 (5)
CrO, 2.011 - 2.052 (5)
av. 2.031
SnO, 2.126, 2.128 (5)
-
523
[
Bu
t
O
3
WCRu
CO
2
C
5
H
5
]
4
1
4
WO, av. 1.89
-
-
519
[
C
5
H
5
CoW
2
-OCH
2
Bu
t
2
OCH
2
Bu
t
4
]
5
1
3
1
WO, av. 1.89
WO, av. 2.06
-
520
[f
Bu
t
O
5
W
2
,
,
3
-C
2
gPt
PMe
2
Ph
2
]
5
1
4
WO, 1.883 - 1.930 (6)
av. 1.906
-
WO, 129.2 -
154.9 (t)
521
[
Bu
t
O
Sn
-OBu
t
2
Mn
-OBu
t
]
2
4
3
SnO, 1.994 (9)
MnO, 2.030 - 2.068
av. 2.048
SnO, 2.104, 2.122 (8)
-
523
[Mn
2
3
-OEt
2
-OEt
8
Sb
4
OEt
6
]
6
4
SbO, 1.940 - 2.041 (5)
av. 1.996
MnO, 2.233 (4) (
3
)
2.074 - 2.229 (4) (
)
av. 2.172
SbO, 2.311 (4) (
3
)
1.994 - 2.206 (4) (
)
av. 2.057
-
522
[
Bu
t
O
Ge
-OBu
t
2
Co
-OBu
t
]
2
4
3
GeO, 1.817 (4)
CoO, 1.942 - 1.987 (5)
av. 1.966
GeO, 1.952, 1.963 (5)
-
523
[
Bu
t
O
Sn
-OBu
t
2
Co
-OBu
t
]
2
4
3
SnO, 2.016 (5)
CoO, 1.955 - 1.985 (4)
av. 1.970
-
523
