Insertion of a phospholide unit into a metal-metal bond: Synthesis and X-ray structure of [Ru3(CO)9(μ:η1: η5-PC4H2Me2)(η1- C6H5)]

Abstract:

The reaction of [Ru<inf>3</inf>(CO)<inf>12</inf>] with 3,4-dimethyl-1- phenylphosphole under mild conditions affords three derivatives which were identified by means of spectroscopic methods as the substitution compounds [Ru<inf>3</inf>(CO)<inf>12-x</inf>(PhPC<inf>4</inf>H <inf>2</inf>Me<inf>2</inf>)<inf>x</inf>] (x = 1, 2, 3) in which the phosphole ligand acts as a tertiary phosphine bonded through the phosphorus atom. Thermolysis of the monosubstituted [Ru<inf>3</inf>(CO)<inf>11</inf>(PhPC <inf>4</inf>H<inf>2</inf>Me<inf>2</inf>)] in cyclohexane affords two new clusters, characterised as [Ru<inf>3</inf>(CO)<inf>9</inf>(μ³: η²:η²:η²-PhPC<inf>4</inf>H <inf>2</inf>Me<inf>2</inf>)] and [Ru<inf>3</inf>(CO)<inf>9</inf>(μ: η¹:η⁵-PC<inf>4</inf>H<inf>2</inf>Me <inf>2</inf>)(η¹-C<inf>6</inf>H<inf>5</inf>)], where the phosphole ring behaves as a six- and seven-electron donor ligand respectively. The reaction with [Os<inf>3</inf>H<inf>2</inf>(CO)<inf>10</inf>] gives the new species [Os<inf>3</inf>(μ-H)(CO)<inf>9</inf>(μ³: η¹:η¹:η²-PhPC<inf>4</inf>H <inf>3</inf>Me<inf>2</inf>)] in which the ligand behaves as a five-electron donor. © 2012 Elsevier B.V. All rights reserved.

Año de publicación:

2012

Keywords:

• Phospholes
• Phospholide
• Triosmium clusters
• Triruthenium clusters

Fuente:

scopus