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Primary photochemical processes for PtCl62− complex in acetonitrile solutions

Paper ID Volume ID Publish Year Pages File Format Full-Text
26074 43933 2016 9 PDF Available
Title
Primary photochemical processes for PtCl62− complex in acetonitrile solutions
Abstract

•Photosolvation of PtCl62− in CH3CN was studied in the time range 100 fs–10 s.•Photosolvation is a chain process.•Primary intermediate was interpreted as Adamson radical pair [PtIIICl52‐(C4v)⋯Cl].•PtIIICl52− and PtIIICl4− intermediates were recorded in microsecond time domain.•PtIIICl4− was proposed to be a chain carrier in the chain photosolvation process.

Photosolvation of hexachloroplatinate(IV) in acetonitrile with the formation of the PtIVCl5(CH3CN)− complex was studied in the time range from hundreds of femtoseconds to seconds. The primary Pt(III) intermediate was recorded and interpreted as the primary Adamson radical pair [PtIIICl52‐(C4v)⋯Cl], which then accepts an electron from a solvent molecule. Two successive Pt(III) intermediates recorded in time range from microseconds to tens of milliseconds were interpreted as PtIIICl52−(C4V) and PtIIICl4− complexes. PtIIICl4− was proposed to be a chain carrier in the chain photosolvation process. Dependencies of quantum yield of photosolvation on the initial complex concentration and excited light intensity were fitted in the framework of the proposed chain mechanism. Rate constants of the reactions of intermediates were determined.

Graphical abstractPhotosolvation of PtCl62− complex in CH3CN is studied in time range from hundreds of femtoseconds to seconds.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Photosolvation; Chain photochemical processes; Primary photochemical process; Electron transfer; Hexachloroplatinate(IV); Laser flash photolysis; Ultrafast kinetic spectroscopy
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Primary photochemical processes for PtCl62− complex in acetonitrile solutions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 325, 1 July 2016, Pages 13–21
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us