Structural Diversity of Tris(2‐hydroxy­aryl)methane‐Derived Aluminium Complexes. Issue 10 (4th March 2016)

• Record Type: Journal Article
• Authors: Oishi, Masataka; Ichinose, Yuri; Nomura, Nobuyoshi
• Is Part Of: European journal of inorganic chemistry. Issue 10(2016)
• Page Start: 1596
• Page End: 1603
• Publication Date: 2016-03-04
• Subjects: Aluminum -- Lewis acids -- Brønsted acids -- Ion pairs; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201501438
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: Tris(2‐hydroxyaryl)methane ligands coordinate to main group and transition metals in a variety of modes. However, for aluminium, only trinuclear complexes have previously been reported. To investigate the possibility of also developing both mono‐ and dinuclear aluminium complexes, the reactions of Et3 Al and tris(2‐hydroxyaryl)methanes have been examined under various conditions. In this work, trialuminium complex1b was formed by disproportionation of the initially generated monomeric complex2′ (Al/ligand = 1:1) with Et3 Al. This reaction allowed us to selectively synthesize aluminium complexes1b, 2, 5, and7 with different coordination modes. Furthermore, mononuclear complex5b underwent rearrangement to yield the tris(aryloxy) complex8 in C6 D6 under the appropriate conditions. Abstract : Mono‐, di‐, and trinuclear aluminium complexes have been synthesized from Et3 Al and tris(2‐hydroxyaryl)methane under controlled reaction conditions. Interestingly, complex5b, the structure of which has been fully characterized, was found to possess both a Lewis and Brønsted acid site.