Catalytic activity of the [Mo(NO)2Cl2(MeCN)2]Cl and [Mo(NO)2Cl3(iPrOH)]·3iPrOH complexes in metathesis and polymerization of alkenes and alkynes

✍ Scribed by Antoni Keller; Renata Matusiak; Tadeusz Głowiak

• Book ID: 104422047
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 107 KB
• Volume: 188
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(02)00324-2

✦ Synopsis

New dinitrosylmolybdenum complexes cis-[Mo(NO) 2 Cl 2 (MeCN) 2 ]Cl and cis-[Mo(NO) 2 Cl 3 ( i PrOH)]•3 i PrOH were synthesized and their catalytic activity was investigated. The cationic complex [Mo(NO) 2 Cl 2 (MeCN) 2 ] + was found to catalyze the polymerization of norbornene. However, with EtAlCl 2 both the complexes form systems catalytically very active in metathesis (pent-2-ene), polymer degradation by cross-metathesis (polynorbornene and polyphenylacetylene by hex-3-ene), ROMP (norbornene) and polymerization of substituted acetylenes (phenylacetylene, hex-2-yne and tert-butylacetylene). The obtained results indicate that polymerization reaction of tert-butylacetylene is living polymerization. In these catalytic systems, vinyltrimethoxysilane copolymerizes with poly-tert-butylacetylene and parallely induces its partial degradation. The interaction of the precatalysts with EtAlCl 2 was also studied.