Inorganica Chimica Acta p. 197 - 202 (2011)
Update date:2022-08-17
Topics:
Sattler, Aaron
Janak, Kevin E.
Parkin, Gerard
The molybdenum hydride complexes Mo(PMe3)5H 2 and Mo(PMe3)4H4 are capable of cleaving the C-S bonds of thiophene, benzothiophene and dibenzothiophene. For example, Mo(PMe3)5H2 reacts with thiophene to give the η5-thiophene and butadiene-thiolate complexes, (η5-C4H4S)Mo(PMe3)3 and (η5-C4H5S)Mo(PMe3) 2(η2-CH2PMe2). These complexes are also obtained from the reaction between Mo(PMe3) 4H4 and thiophene under photochemical conditions, whereas at elevated temperatures thiophene is desulfurized to liberate but-1-ene. Similarly, Mo(PMe3)4H4 desulfurizes benzothiophene at elevated temperatures to liberate ethylbenzene, while the arylthiolate complex Mo(PMe3)4(SC6H 4Et)H3 is obtained photochemically. Furthermore, Mo(PMe3)4H4 cleaves the C-S bond of dibenzothiophene to give [η6,κ1-C 6H5C6H4S]Mo(PMe3) 2H.
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