The 1H, 13C, 15N and 117Sn NMR study of the intramolecular Sn–N interaction in tri- and tetraorganotin compounds containing the chiral 2-(4-isopropyl-2-oxazolinyl)-5-phenyl ligand

✍ Scribed by Piotr Cmoch; Zofia Urbańczyk-Lipkowska; Armine Petrosyan; Anita Stępień; Krzysztof Staliński

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 249 KB
• Volume: 733
• Category: Article
• ISSN: 0022-2860
• DOI: 10.1016/j.molstruc.2004.07.035

✦ Synopsis

A series of novel tri-and tetraorganotin compounds containing the optically active 2-(4-isopropyl-2-oxazolinyl)-5-phenyl ligand has been synthesized. All the novel compounds have been characterized, especially by means of the multinuclear NMR investigation, the results of which are discussed. A number of arguments based on the 13 C, 15 N and 117 Sn NMR and X-ray studies support the intramolecular donoracceptor coordination between tin and nitrogen atoms in the stannanes. For the first time the J( 15 N-117/119 Sn) coupling constant values in coordinated tin hydrides clearly point to a coordination number of the tin larger than four.