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Photochemical synthesis of linearly aggregated fine particles from a ternary gaseous mixture involving iron pentacarbonyl

Paper ID Volume ID Publish Year Pages File Format Full-Text
27033 43996 2010 7 PDF Available
Title
Photochemical synthesis of linearly aggregated fine particles from a ternary gaseous mixture involving iron pentacarbonyl
Abstract

From a gaseous mixture of iron pentacarbonyl (Fe(CO)5), allyltrimethylsilane (2-propenyltrimethylsilane) (ATMeSi), and carbon disulfide (CS2), sedimentary aerosol particles with a mean diameter of 0.56 μm were produced under UV light irradiation with a medium pressure mercury lamp. Chemical structure of the sedimentary aerosol particles was investigated by measuring FT-IR and Raman spectra, and chemical composition, by measuring scanning electron microscopy/energy dispersive spectroscopy (SEM-EDS). From the analysis, it was strongly suggested that CS2 reacted with Fe(CO)5 to produce Fe(CO)4–S–C(S)–Fe(CO)4 species by σ-coordination of CS2 molecule, that two Fe atoms were bonded via carbon-bridging thiocarbonyls produced from CS2, and that ATMeSi coordinated to Fe atom via π-coordination of allyl group of ATMeSi. Sedimentary aerosol particles produced under a magnetic field up to 5 T were found to increase their particle size, and chemical composition of the deposited particles was changed by the post-exposure with UV light by evolving volatile Fe(CO)n (n = 1–3) species in addition to CO groups bonded to Fe atom. During the sedimentation process of the aerosol particles, linearly aggregated particles (i.e., particle wires) were efficiently formed at the vicinity of the front edge of a glass plate placed at the bottom of the irradiation cell. Experimental details to form long particle wires were discussed briefly.

Keywords
Gas phase photochemical reaction; Aerosol particle; Particle wire; Iron pentacarbonyl; Allyltrimethylsilane; Carbon disulfide
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Photochemical synthesis of linearly aggregated fine particles from a ternary gaseous mixture involving iron pentacarbonyl
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 210, Issues 2–3, 25 February 2010, Pages 108–114
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
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Any Questions? feel free to contact us