Synthesis of Main Group Polycations in Molten and Pseudo‐Molten GaBr 3 Media
Abstract The prospects of synthesizing polycationic species using GaBr 3 in benzene solution at room temperature have been investigated. The salts Bi 8 [GaBr 4 ] 2 , Sb 8 [GaBr 4 ] 2 and Te 4 [Ga 2 Br 7 ] 2 have been isolated and characterized. The first two compounds are isotypic with Sb 8 [GaCl 4...
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| Published in | European journal of inorganic chemistry Vol. 2005; no. 24; pp. 4907 - 4913 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
16.12.2005
|
| Online Access | Get full text |
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| Summary: | Abstract
The prospects of synthesizing polycationic species using GaBr
3
in benzene solution at room temperature have been investigated. The salts Bi
8
[GaBr
4
]
2
, Sb
8
[GaBr
4
]
2
and Te
4
[Ga
2
Br
7
]
2
have been isolated and characterized. The first two compounds are isotypic with Sb
8
[GaCl
4
]
2
, crystallize in the space group
Pna
2
1
, and feature square
anti
‐prismatic E
8
2+
polycations (E = Sb, Bi). Unit‐cell parameters for Bi
8
[GaBr
4
]
2
are
a =
18.3014(10) Å,
b
= 10.3391(6) Å and
c =
13.5763(7) Å, and for Sb
8
[GaBr
4
]
2
;
a =
18.096(2) Å,
b
= 10.1572(9) Å and
c =
13.2168(10) Å. Te
4
[Ga
2
Br
7
]
2
crystallizes in the space group
P
2
1
/
c
with
a =
10.1600(9) Å,
b
= 10.8314(9) Å,
c =
13.8922(10) Å and
β
= 99.182(7)°, and features a square‐planar Te
4
2+
polycation. The compound Bi
5
[GaBr
4
]
3
has been synthesized from molten GaBr
3
and characterized by using powder diffractometry in space group
Fm
‐3
c
;
a
= 17.6263(8) Å. The structure model for this compound suggests the included Bi
5
3+
cations to be practically freely oriented within its cavities in the solid phase. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005) |
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| ISSN: | 1434-1948 1099-0682 |
| DOI: | 10.1002/ejic.200500161 |