Metal fragment isomerisation upon grafting a d2 ML4perhydrocarbyl Os complex on a silica surface: origin and consequence†
Abstract
Grafting of Os bisalkylidene complexes, [Os(CHtBu)2(CH2tBu)2], on a silica partially dehydroxylated at 700 °C selectively yields an alkylidyne complex [(
SiO)Os(
CtBu)(CH2tBu)2] according to mass balance analysis,
CHtBu)2(CH2tBu)2] to a butterfly-geometry with apical siloxy and alkylidyne
SiO)Os(
CtBu)(CH2tBu)2]. Finally, DFT calculations show that grafting occurs via a σ-bond metathesis between the
- This article is part of the themed collection: The synergy between theory and experiment