A polymeric (iodo)selenium cation in the structure of (Se6I)WCl6
The reaction of Se, I and WCl in the molar ratio 12:1:2 in a sealed evacuated ampoule at 423 K yields (Se · (WCl ) in quantitative yield as black, moisture sensitive crystals with a bronze luster. The compound crystallizes triclinic (space group [unk]) with the lattice constants = 670.1(3) pm, = 741...
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| Published in | Zeitschrift für Kristallographie. Crystalline materials Vol. 210; no. 4; pp. 265 - 268 |
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| Format | Journal Article |
| Language | English |
| Published |
De Gruyter Oldenbourg
01.04.1995
|
| Online Access | Get full text |
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| Summary: | The reaction of Se, I
and WCl
in the molar ratio 12:1:2 in a sealed evacuated ampoule at 423 K yields (Se
·
(WCl
) in quantitative yield as black, moisture sensitive crystals with a bronze luster. The compound crystallizes triclinic (space group
[unk]) with the lattice constants
= 670.1(3) pm,
= 741.7(5) pm,
= 803.5(5)pm,
= 92.18(5)°,
= 97.71(4)°,
= 95.48(4)°. The structure was refined to
) = 9.2% based on 2248 unique reflections and
(|
|) = 3.7% based on 1912 reflections with |
| > 4
). The one-dimensional polymeric cation (Se
is built of Se
rings in the chair conformation which are connected by iodine atoms bound to the Se
rings in the 1,4 positions and forming linear bridges. The WCl
anions form slightly distorted octahedra. The structure is compared with that of (Se
I)MF
(M = As, Sb) with a nearly isostructural polycation. |
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| ISSN: | 2194-4946 2196-7105 |
| DOI: | 10.1524/zkri.1995.210.4.265 |