Chemistry Reference
In-Depth Information
Table 6.12
Potassium aryloxides
Bond length ( A)
Compound
Aryloxide
M-O
Ref.
[(dicyclohexano-18-crown-6)K
2
2
-
OAr
2
]
n
6-coord. K
2
-OC
6
H
5
2.591 (1), 2.611 (2)
i
[(dicyclohexano-18-crown-
OC
6
H
5
.
HOC
6
H
5
3.103 (4)
ii
6)K(OAr)(HOAr)]
n
8-coord. K, OAr hydrogen bonded to
HOAr coordinated to next K-atom
[K
2
-OAr
THF
3
]
2
6-coord. K, bridging OAr and THF
2
-OC
6
H
2
CF
3
3
-
2,4,6
2.752 (3), 2.833 (3)
iii
[K(OAr)]
n
8-coord. K, polymeric structure
2
-OC
6
H
2
NO
2
3
-
2,4,6
2.738 (1)
iv
[(18-crown-6)K(OAr)]
8-coord. K
OC
6
H
2
NO
2
3
-2,4,6
2.741 (3)
v
cis-syn-cis
-[(dicyclohexano-18-
crown-6)K(OAr)]
7-coord. K
OC
6
H
4
NO
2
-4
2.660 (?)
vi
cis-syn-cis
-[(dicyclohexane-18-
crown-6)K(OAr)]
OC
6
H
4
NO
2
-2
2.660 (?)
vii
cis-anti-cis
-[(dicyclohexano-18-
crown-6)K(OAr)]
7-coord. K
OC
6
H
4
NO
2
-2
2.628 (?)
vii
i
M.E. Fraser, S. Fortier, A. Rodrigue, and J.W. Bovenkamp,
Can. J. Chem.
,
64
, 816 (1986).
ii
M.E. Fraser, S. Fortier, M.K. Markiewicz, A. Rodrigue, and J.W. Bovenkamp,
Can. J. Chem.
,
65
, 2558 (1987).
iii
S. Brooker, F.T. Edelmann, T. Kottke, H.W. Roesky, G.M. Sheldrick, D. Stalke, and K.H.
Whitmire,
J. Chem. Soc.
,
Chem. Commun.
, 144 (1991).
iv
J.M. Harrowfield, B.W. Skelton, and A.H. White,
Aust. J. Chem.
,
48
, 1311 (1995).
v
J.C. Barnes and J. Collard,
Acta Cryst. C
,
44
, 565 (1988).
vi
L.R. Caswell, J.E. Hardcastle, T.A. Jordan, I. Alam, K.A. McDowell, C.A. Mahan, F.R. Fron-
czek, and R.D. Gandour,
J. Inclusion Phenomena
,
13
, 37 (1992).
vii
F.R. Fronczek, R.D. Gandour, L.M.B. Gehrig, L.R. Caswell, K.A. McDowell, and I. Alam,
J.
Inclusion Phenomena
,
5
, 379 (1987).
Table 6.13
Rubidium and caesium aryloxides
Bond length ( A)
Compound
Aryloxide
M-O
Ref.
[Rb(OAr)]
n
8-coord. Rb, polymeric structure
2
-OC
6
H
2
NO
2
3
-2,4,6
2.927 (3), 3.189 (3)
i
[Cs(OAr)]
n
8-coord. Cs, polymeric structure
2
-OC
6
H
2
NO
2
3
-2,4,6
3.087 (3), 3.372 (3)
i
2
-OC
6
H
3
Pr
i
2
-2,6
[Cs(OAr)]
n
infinite chains with Cs-O
and Cs-
6
-arene interactions
2.875 (4), 2.898 (5)
ii
i
J.M. Harrowfield, B.W. Skelton, and A.H. White,
Aust. J. Chem.
,
48
, 1311 (1995).
ii
D.L. Clark, D.R. Click, R.V. Hollis, B.L. Scott, and J.G. Watkin,
Inorg. Chem.
,
37
, 5700
(1998).
