Rhenium trioxide chloride explained

Rhenium trioxide chloride is an inorganic compound with the formula . It is a colorless, distillable, diamagnetic liquid. It is a rhenium oxychloride. The material is used as a reagent in the preparation of rhenium compounds.

Synthesis and reactions

Rhenium trioxide chloride can be prepared by chlorination of rhenium trioxide:^[1]

With Lewis bases (L), rhenium trioxide chloride reacts to form adducts with the formula .^{[2] [3]}

The compound hydrolyzes readily to give perrhenic acid.

Structure

The compound adopts a tetrahedral structure with Re-O and Re-Cl bond distances of 1.71 and 2.22 Å.^[4] In contrast rhenium trioxide fluoride is polymeric with octahedral Re centers.

Notes and References

1. Book: O. Glemser. R. Sauer. Rhenium (VII) Oxychloride. Handbook of Preparative Inorganic Chemistry, 2nd Ed. . G. Brauer. Academic Press. 1963. NY, NY. 2pages=1480.
2. 10.1002/cber.19941270108 . Chlorotrioxorhenium. Neue Synthesen, Reaktionen, und Derivate . 1994 . Kühn . Fritz E. . Romão . Carlos C. . Kleine . Matthias . Mink . Janos . Herrmann . Wolfgang A. . Chemische Berichte . 127 . 47-57 .
3. 10.1039/b616495a . Rhenium Oxohalides: Synthesis and Crystal Structures of ReO₃Cl(THF)₂, ReOCl₄(THF), Re₂O₃Cl₆(THF)₂, and Re₂O₃Cl₆(H₂O)₂ . 2007 . Noh . Wontae . Girolami . Gregory S. . Dalton Transactions . 6 . 674–679 . 17268601 .
4. 10.1002/zaac.200600186 . MnO₃Cl, Isolation and Crystal Structure . 2006 . Spandl . Johann . Supeł . Joanna . Drews . Thomas . Seppelt . Konrad . Zeitschrift für Anorganische und Allgemeine Chemie . 632 . 14 . 2222–2225 .