Crystal structures of [NEt3H]5[XCoIIW11O39]·3H2O (X = P or As)
Journal of the Chemical Society, Dalton Transactions
By: H. T. Evans Jr., T.J.R. Weakley, and G.B. Jameson
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Abstract
The orthorhombic crystal structures of [NEt3H]5[XCoIIW11O39]·3H2O for X = P and As have been determined with data collected at room temperature, and for X = P at –100 °C, using Mo-Kα radiation. For the latter the space group is Pna21, a= 21.670(11), b= 14.805(4), c= 20.393(5)Å and Z= 4. The structure consists of chains of α-Keggin-type molecules joined by W–O–links aligned in the a-axis direction. The Co/W occupancy at the link is disordered, with 61% Co on one side and 39% on the other. Further probable disorder, by lamellar merohedral twinning on (001) and by misorientation of the triethylammonium ions, has obscured the ethyl groups and the water molecules. In polarized light the crystals are deep wine-red normal to the chains (in the b direction), but nearly colourless in the a and c directions. The structure of the arsenate is similar to that of the phosphate.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Crystal structures of [NEt3H]5[XCoIIW11O39]·3H2O (X = P or As) |
| Series title | Journal of the Chemical Society, Dalton Transactions |
| DOI | 10.1039/DT9960002537 |
| Issue | 12 |
| Year Published | 1996 |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of the Chemical Society, Dalton Transactions |
| First page | 2537 |
| Last page | 2540 |
| Google Analytic Metrics | Metrics page |