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Crystal structures of [NEt3H]5[XCoIIW11O39]·3H2O (X = P or As)

Journal of the Chemical Society, Dalton Transactions

By:
, , and
DOI: 10.1039/DT9960002537

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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.

Additional Publication Details

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
Number of Pages:
4