Mutual Placement of Isocyanide and Phosphine Ligands in Platinum(II) Complexes [PtHal2L1L2] (Hal = Cl, Br, I; L1,L2 = CNCy, PPh3) Leads to Highly-Efficient Photocatalysts for Hydrosilylation of Alkynes

Autor:	Maria V. Kashina, Andrei A. Karcheuski, Mikhail A. Kinzhalov, Konstantin V. Luzyanin, Svetlana A. Katkova
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	isocyanide ligands platinum(II) complexes catalytic activity hydrosilylation photocatalysis Organic chemistry QD241-441
Zdroj:	Molecules, Vol 28, Iss 23, p 7764 (2023)
Druh dokumentu:	article
ISSN:	1420-3049
DOI:	10.3390/molecules28237764
Popis:	A series of platinum complexes featuring phosphine and isocyanide ligands [PtX2(PPh3)(CNCy)] (X = Cl, Br, and I) as well as their parent phosphine [PtX2(PPh3)2] and isocyanide [PtX2(CNCy)2] analogues have been prepared and evaluated as catalysts for the photocatalytic hydrosilylation of alkynes. Under violet light irradiation (λmax = 400 nm), phosphine–isocyanides complexes [PtX2(PPh3)(CNCy)] gave high yields of silylated products (product yield up to 99%, TONs up to 1.98 × 103). The blue light irradiation (λmax = 450 nm) was more suitable for the parent phosphine complexes [PtX2(PPh3)2], which showed comparable efficiency (product yield up to 99%, TON up to 1.98 × 103), while isocyanide complexes [PtX2(CNCy)2] were not active.
Databáze:	Directory of Open Access Journals
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