Lead(II) Siloxides. Issue 71 (21st November 2019)

• Record Type: Journal Article
• Authors: Someşan, Adrian‐Alexandru; Le Coz, Erwann; Raţ, Ciprian Ionuţ; Dorcet, Vincent; Roisnel, Thierry; Silvestru, Cristian; Sarazin, Yann
• Is Part Of: Chemistry. Volume 25:Issue 71(2019)
• Page Start: 16236
• Page End: 16240
• Publication Date: 2019-11-21
• Subjects: bulky siloxides -- decomposition pathway -- lead(II) oxocluster -- lead(II) siloxides -- triphenyl siloxide; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201904713
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Although Pb II ‐siloxides have been known until now to decompose to oxoclusters, here [{RO F }PbOSi(SiMe3 )3 ] (RO F =fluoroalkoxide) and, most importantly, [Pb2 {OSi(SiMe3 )3 }{μ2 ‐OSi(SiMe3 )3 }3 ], are presented. The unusual bonding pattern in the latter thermally stable dinuclear complex was investigated by crystallographic and computational methods. Its stability is much higher than that of the simple, yet elusive "[Pb(OSiPh3 )2 ]", for which decomposition pathways towards [Pb4 (μ4 ‐O)(μ2 ‐OSiPh3 )6 ] have been clearly established. Abstract : Stable lead(II) siloxides that do not decompose to oxoclusters have been prepared. These include the first homoleptic Pb II ‐siloxide, which also exhibits unique structural features.