Chemistry Reference
In-Depth Information
Table 6.3
W
-
OAr distances for various aryloxide derivatives of tungsten
Bond length ( A)
Coordination Electron
Compound
number
count
M-OAr
Ref.
[W
OC
6
H
5
H
3
PMe
3
4
]
8
18
2.129 (8)
i
[NEt
4
][W
OC
6
H
3
Ph
2
-2,6
CO
5
]
6
18
2.165 (9), 2.175 (9)
ii
[NEt
4
][W
OC
6
H
5
CO
4
PMePh
2
]
6
18
2.191 (6)
ii
[NEt
4
][W
OC
6
H
5
CO
5
]
6
18
2.182 (19), 2.205 (21)
iii
[W
O-
1
-C
6
H
4
H
2
PMe
3
4
]
8
18
2.177 (5)
iv, v
[W
OC
6
H
3
Me-CH
2
H
2
PMe
3
4
]
8
18
2.145 (8)
v
[W
OC
6
H
3
Ph-
6
-C
6
H
5
H
PMePh
2
2
]
Ł
18
2.163 (9)
vi
[W
OC
6
H
3
Ph-
6
-
C
6
H
5
Cl
PMePh
2
2
]
Ł
18
2.128 (4)
vi
[
Cp
Ł
W(OAr)
C
2
Me
2
2
]
Ł
16/18
2.072 (7)
vii
[W
OC
6
H
3
Ph-
6
-C
6
H
5
OAr
PMePh
2
]
Ł
16
2.001 (6), 2.033 (6)
viii, ix
[W
OC
6
H
3
Ph-
6
-C
6
H
5
OAr
dppm
]
Ł
16
2.038 (5), 1.986 (5)
viii, ix
all-trans
-[W
OC
6
H
3
Ph
2
-
2,6
2
Cl
2
PMe
2
Ph
2
]
6
14
1.966 (4)
x
all -trans
-[W
OC
6
H
4
Me-
4
2
Cl
2
PMePh
2
2
]
6
14
1.848 (5), 1.840 (5)
xi
[W
OC
6
H
3
Ph-
1
-C
6
H
4
2
PMe
2
Ph
2
]
6
14
1.88 (1), 1.87 (1)
viii, ix
trans
-[W
OC
6
H
3
Ph
2
-2,6
2
Cl
3
THF
]
6
13
1.855 (5), 1.857 (5)
x
[W
OC
6
H
2
Cl
3
-2,4,6
4
Cl
OEt
2
]
6
13
1.853 (9), 1.964 (10)
xii
cis
-[W
OC
6
H
3
Ph
2
-2,6
2
Cl
4
]
6
12
1.851 (3), 1.840 (3)
x
cis
-[W
OC
6
H
3
Pr
i
2
-2,6
2
Cl
4
]
6
12
1.814 (8), 1.797 (9)
xiii
Ł
Undefined number.
i
K.W. Chiu, R.A. Jones, G. Wilkinson, A.M.R. Galas, M.B. Hursthouse, and K.M.A. Malik,
J.
Chem. Soc., Dalton Trans.
, 1204 (1981).
ii
D.J. Darensbourg, B.L. Mueller, C.J. Bischoff, S.S. Chojnacki, and J.H. Reibenspies,
Inorg.
Chem.
,
30
, 2418 (1991).
iii
D.J. Darensbourg, K.M. Sanchez, J.H. Reibenspies, and A.L. Rheingold,
J. Am. Chem. Soc.
,
111
, 7094 (1989).
iv
D. Rabinovich, R. Zelman, and G. Parkin,
J. Am. Chem. Soc.
,
112
, 9632 (1990).
v
D. Rabinovich, R. Zelman, and G. Parkin,
J. Am. Chem. Soc.
,
114
, 4611 (1992).
vi
J.L. Kerschner, E.M. Torres, P.E. Fanwick, I.P. Rothwell, and J.C. Huffman,
Organometallics
,
8
, 1424 (1989).
vii
M.B. O'Regan, M.G. Vale, J.F. Payack, and R.R. Schrock,
Inorg. Chem.
,
31
, 1112 (1992).
viii
J.L. Kerschner,
I.P. Rothwell,
J.C. Huffman,
and
W.E. Streib,
Organometallics
,
7
,
1871
(1988).
ix
J.L. Kerschner, P.E. Fanwick, I.P. Rothwell, and J.C. Huffman,
Organometallics
,
8
, 1431
(1989).
x
J.L. Kerschner,
P.E. Fanwick,
I.P. Rothwell,
and
J.C. Huffman,
Inorg.
Chem.
,
28
,
780
(1989).
xi
L.M. Atagi and J.M. Mayer,
Angew. Chem., Int. Ed. Engl.
,
32
, 439 (1993).
xii
R.M. Kolodziej, R.R. Schrock, and J.C. Dewan,
Inorg. Chem.
,
28
, 1243 (1989).
xiii
H. Yasuda, Y. Nakayama, K. Takei, A. Nakamura, Y. Kai, and N. Kanehisa,
J. Organomet.
Chem.
,
473
, 105 (1994).
in the range 2
.
13 - 2
.
20 A. As the formal electron count at the tungsten metal centre
decreases so there is a dramatic decrease in the W-OAr bond length reaching a value
of 1.786 (9) A for one of the ligands in the compound
cis
-[W(OC
6
H
3
Pr
i
2
-2,6)
2
Cl
4
].
ThedropinW-O(aryloxide) distance of
>
0
.
3 A is comparable to that found for the
group 5 metals above.
