Bis(6-Diphenylphosphinoacenaphth-5-yl)Telluride as a Ligand toward Manganese and Rhenium Carbonyls
oleh: Truong Giang Do, Emanuel Hupf, Enno Lork, Jens Beckmann
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2018-10-01 |
Deskripsi
The reaction of the previously known bis(6-diphenylphosphinoacenaphthyl-5-)telluride (6-Ph<sub>2</sub>P-Ace-5-)<sub>2</sub>Te (<b>IV</b>) with (CO)<sub>5</sub>ReCl and (CO)<sub>5</sub>MnBr proceeded with the liberation of CO and provided <i>fac</i>-(6-Ph<sub>2</sub>P-Ace-5-)<sub>2</sub>TeM(X)(CO)<sub>3</sub> (<i>fac</i>-<b>1</b>: M = Re, X = Cl; <i>fac</i>-<b>2</b>: M = Mn, X = Br), in which <b>IV</b> acts as bidentate ligand. In solution, <i>fac</i>-<b>1</b> and <i>fac</i>-<b>2</b> are engaged in a reversible equilibrium with <i>mer</i>-(6-Ph<sub>2</sub>P-Ace-5-)<sub>2</sub>TeM(X)(CO)<sub>3</sub> (<i>mer</i>-<b>1</b>: M = Re, X = Cl; <i>mer</i>-<b>2</b>: M = Mn, X = Br). Unlike <i>fac</i>-<b>1</b>, <i>fac</i>-<b>2</b> is prone to release another equivalent of CO to give (6-Ph<sub>2</sub>P-Ace-5-)<sub>2</sub>TeMn(Br)(CO)<sub>2</sub> (<b>3</b>), in which <b>IV</b> serves as tridentate ligand.