Synthesis, Characterization, and Spectroscopic Properties of Allylic Ruthenium(II) Complexes of a Highly Conjugated Perinone. Issue 30 (2nd August 2019)

• Record Type: Journal Article
• Authors: Nuñez Bahena, Erick; Fernández Gijón, César Augusto; Fomine, Sergei; Alexandrova, Larissa; Le Lagadec, Ronan
• Is Part Of: European journal of inorganic chemistry. Issue 30(2019)
• Page Start: 3494
• Page End: 3502
• Publication Date: 2019-08-02
• Subjects: Allyl ligands -- Fused‐ring systems -- Perinone derivatives -- Ruthenium -- Luminescence; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201900615
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : Highly conjugated perinones were evaluated as proligands with [Ru(η 6 ‐arene)Cl2 ]2 precursors (arene = p ‐cymene or benzene). None of them, except itaco‐perinone (IP ) bearing one exocyclic methylene group, were able to form coordination compounds. Expected η 1 ‐coordination through the lone pair of the nitrogen or oxygen atoms of the perinone did not occur. Instead a deprotonation reaction involving the exocyclic methylene was observed and the corresponding [Ru(η 6 ‐arene)(η 3 ‐IP)Cl] complex was isolated in moderate yields. Mechanistic studies revealed that the base‐promoted isomerization of itaco‐perinone to citraco‐perinone prevented higher yields in the synthesis of the allylic complexes. Additionally, it was observed thatIP can dimerize through the exocyclic methylene group, indicating high reactivity of this carbon–carbon double bond. Electronic absorption and emission properties of the perinones and organometallic compounds were studied. Abstract : Itaco‐perinone (IP ) bearing a highly reactive exocyclic carbon–carbon double bond reacted with [RuCl2 (η 6 ‐arene)]2 precursors to generate novel allylic ruthenium(II) complexes. Electronic absorption and emission properties of the perinones and organometallic compounds were studied.