Synthesis and Molecular Structure of trans-[RhCl2(tBu(2)PPh)(2)]: a Rare Example of a Mononuclear Rhodium(II) Complex

Boettcher, Hans-Christian; Kluefers, Peter; Mies, Thomas und Mayer, Peter (2018): Synthesis and Molecular Structure of trans-[RhCl2(tBu(2)PPh)(2)]: a Rare Example of a Mononuclear Rhodium(II) Complex. In: Zeitschrift für Anorganische und Allgemeine Chemie, Bd. 644, Nr. 23: S. 1593-1597

Abstract

During the reaction of [{Rh(mu-Cl)(coe)(2)}(2)] (1) (coe = cis-cyclooctene) with the tertiary phosphane tBu(2)PPh in a nitrogen atmosphere the square planar rhodium(II) complex trans-[RhCl2(tBu(2)PPh)(2)] (2) was identified as a side product in moderate yield. 2 was synthesized in a defined manner in higher yields using a known procedure starting from [{Rh(mu-Cl)(coe)(2)}(2)], tBu(2)PPh (molar ratio Rh:P of 1:2), and N-chlorosuccinimide as the oxidizing agent in THF at room temperature. The molecular structure of 2 was determined by X-ray crystallography. Additionally, to further confirm the molecular structure of trans-[RhCl2(tBu(2)PPh)(2)], extensive DFT calculations were undertaken, which gave further evidence for its molecular structure. In contrast to the remarkable stability of 2 in the solid state, the investigation of solutions of this compound afforded hints at a dynamic equilibrium, which renders more difficult the collection of adequate NMR spectroscopic data for the title complex.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie > Department Chemie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 0044-2313
• Sprache: Englisch