Di- and Trimanganese N,N′-Dicyclohexylformamidinate Complexes

✍ Scribed by Aparna Kasani; Ruppa P. Kamalesh Babu; Khalil Feghali; Sandro Gambarotta; Glenn P. A. Yap; Laurence K. Thompson; Regine Herbst-Irmer

• Book ID: 101303935
• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 287 KB
• Volume: 5
• Category: Article
• ISSN: 0947-6539
• DOI: 10.1002/(sici)1521-3765(19990201)5:2<577::aid-chem577>3.0.co;2-2

✦ Synopsis

The reaction of [MnCl 2 (thf) 2 ] with the N,N'-dicyclohexylformamidinate anion gave two remarkably different results depending on the nature of the amidinate alkali metal countercation. The reaction with the lithium salt affords a mixed-valence Mn ± oxo cluster [Mn 3 (CyNCHNCy) 6 OLi] ´2 THF (1), formed by the deoxygenation of THF. In the case of the potassium salt, a dinuclear complex [{(CyNCHNCy)-Mn} 2 (m-CyNCHNCy) 2 ] (2) was formed; it has a highly distorted structure. The complexes 1 and 2 are both extremely sensitive to oxygen. Reaction of 2 with dry O 2 afforded the dinuclear complex [{Mn(CyNCHNCy) 2 } 2 (m-O)] 2 ´2 THF (4).