Rhenium trioxide chloride

Rhenium trioxide chloride
Names
	Other names Rhenium oxychloride
Identifiers
CAS Number	42246-25-3;
3D model (JSmol)	Interactive image;
	InChI Key: YDGWOHYNESLUAQ-UHFFFAOYSA-M;
	SMILES O=[Re](=O)(=O)Cl;
Properties
Chemical formula	ClO3Re
Molar mass	269.65 g·mol−1
Appearance	colorless liquid
Density	4.665 g/cm3 (-100 °C)
Melting point	4.5 °C (40.1 °F; 277.6 K)
Boiling point	113 °C (235 °F; 386 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Rhenium trioxide chloride is an inorganic compound with the formula ReO₃Cl. It is a colorless, distillable, diamagnetic liquid. It is a rhenium oxychloride.[1] 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:[2]

2 ReO₃ + Cl₂ → 2 ReO₃Cl

With Lewis bases (L), rhenium trioxide chloride reacts to form adducts with the formula ReO₃ClL₂.[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 (ReO₃F) is polymeric with octahedral Re centers.

References

Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1052. ISBN 978-0-08-037941-8.
O. Glemser; R. Sauer (1963). "Rhenium (VII) Oxychloride". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2pages=1480. NY,NY: Academic Press.
Noh, Wontae; Girolami, Gregory S. (2007). "Rhenium Oxohalides: Synthesis and Crystal Structures of ReO₃Cl(THF)₂, ReOCl₄(THF), Re₂O₃Cl₆(THF)₂, and Re₂O₃Cl₆(H₂O)₂". Dalton Transactions (6): 674–679. doi:10.1039/b616495a. PMID 17268601.
Spandl, Johann; Supeł, Joanna; Drews, Thomas; Seppelt, Konrad (2006). "MnO₃Cl, Isolation and Crystal Structure". Zeitschrift für Anorganische und Allgemeine Chemie. 632 (14): 2222–2225. doi:10.1002/zaac.200600186.

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[1] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1052. ISBN 978-0-08-037941-8.

[2] O. Glemser; R. Sauer (1963). "Rhenium (VII) Oxychloride". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2pages=1480. NY,NY: Academic Press.

[3] Noh, Wontae; Girolami, Gregory S. (2007). "Rhenium Oxohalides: Synthesis and Crystal Structures of ReO₃Cl(THF)₂, ReOCl₄(THF), Re₂O₃Cl₆(THF)₂, and Re₂O₃Cl₆(H₂O)₂". Dalton Transactions (6): 674–679. doi:10.1039/b616495a. PMID 17268601.

[4] Spandl, Johann; Supeł, Joanna; Drews, Thomas; Seppelt, Konrad (2006). "MnO₃Cl, Isolation and Crystal Structure". Zeitschrift für Anorganische und Allgemeine Chemie. 632 (14): 2222–2225. doi:10.1002/zaac.200600186.