|Molar mass||833.15 g/mol|
|Melting point||205 °C (478 K)|
|Solubility in water||not soluble in water|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
Oxotrichlorobis(triphenylphosphine)rhenium(V) is the chemical compound with the formula ReOCl3(PPh3)2. This yellow, air-stable solid is a precursor to a variety of other rhenium complexes. In this diamagnetic compound, Re has an octahedral coordination environment with one oxo, three chloro and two mutually trans triphenylphosphine ligands. The oxidation state of rhenium is +5 and its configuration is d2.
ReOCl3(PPh3)2 is commercially available, but it is readily synthesized by reaction of perrhenic acid with triphenylphosphine in a mixture of hydrochloric acid and acetic acid. In this reaction, Re(VII) is reduced to Re(V), and triphenylphosphine is oxidized to its oxide.
- HReO4 + 3 HCl + 3 PPh3 → ReOCl3(PPh3)2 + Ph3PO + 2 H2O
The required perrhenic acid solution can be prepared in situ from rhenium(VII) oxide.
ReOCl3(PPh3)2 is a precursor to a variety of other oxo-, nitridio, and hydrido complexes. It converts to ReH7(PPh3)2 by a treatment with LiAlH4. 
- Johnson, N. P.; Lock, C. J. L.; Wilkinson, G. (1967). "Complexes Of Rhenium(V)". Inorg. Synth. Inorganic Syntheses 9: 145. doi:10.1002/9780470132401.ch39. ISBN 978-0-470-13240-1.
- K. Abdur-Rashid, A. J. Lough, and R. H. Morris (2001). "Intra- and inter-ion-pair protonic-hydridic bonding in polyhydridobis(phosphine)rhenates". Canadian Journal of Chemistry 79 (5–6): 964. doi:10.1139/cjc-79-5-6-964.
- Pombeiro, A. J. L.; Fatima, M.; Crabtree, R. H. "Technetium and Rhenium: Inorganic & Coordination Chemistry" Encyclopedia of Inorganic Chemistry. John Wiley & Sons: New York, 2006. doi:10.1002/0470862106.ia237