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Mutual Placement of Isocyanide and Phosphine Ligands in Platinum(II) Complexes [PtHal 2 L 1 L 2 ] (Hal = Cl, Br, I; L 1 ,L 2 = CNCy, PPh 3) Leads to Highly-Efficient Photocatalysts for Hydrosilylation of Alkynes.

Mutual Placement of Isocyanide and Phosphine Ligands in Platinum(II) Complexes [PtHal 2 L 1 L 2 ] (Hal = Cl, Br, I; L 1 ,L 2 = CNCy, PPh 3) Leads to Highly-Efficient Photocatalysts for Hydrosilylation of Alkynes.

Authors :
Kashina, Maria V.
Karcheuski, Andrei A.
Kinzhalov, Mikhail A.
Luzyanin, Konstantin V.
Katkova, Svetlana A.
Source :
Molecules; Dec2023, Vol. 28 Issue 23, p7764, 15p
Publication Year :
2023

Abstract

A series of platinum complexes featuring phosphine and isocyanide ligands [PtX<subscript>2</subscript>(PPh<subscript>3</subscript>)(CNCy)] (X = Cl, Br, and I) as well as their parent phosphine [PtX<subscript>2</subscript>(PPh<subscript>3</subscript>)<subscript>2</subscript>] and isocyanide [PtX<subscript>2</subscript>(CNCy)<subscript>2</subscript>] analogues have been prepared and evaluated as catalysts for the photocatalytic hydrosilylation of alkynes. Under violet light irradiation (λ<subscript>max</subscript> = 400 nm), phosphine–isocyanides complexes [PtX<subscript>2</subscript>(PPh<subscript>3</subscript>)(CNCy)] gave high yields of silylated products (product yield up to 99%, TONs up to 1.98 × 10<superscript>3</superscript>). The blue light irradiation (λ<subscript>max</subscript> = 450 nm) was more suitable for the parent phosphine complexes [PtX<subscript>2</subscript>(PPh<subscript>3</subscript>)<subscript>2</subscript>], which showed comparable efficiency (product yield up to 99%, TON up to 1.98 × 10<superscript>3</superscript>), while isocyanide complexes [PtX<subscript>2</subscript>(CNCy)<subscript>2</subscript>] were not active. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14203049
Volume :
28
Issue :
23
Database :
Complementary Index
Journal :
Molecules
Publication Type :
Academic Journal
Accession number :
174112733
Full Text :
https://doi.org/10.3390/molecules28237764