Photochemistry of tris(diethyldithiocarbamato)iron(III). Reduction to a stable iron(II) complex induced by ligand-to-metal charge transfer excitation

Chung I. Chang; Bing E. Xu; Radha Akella; Melanie H. Cobb; Elizabeth J. Goldsmith

doi:10.1016/S1387-7003(02)00555-5

Photochemistry of tris(diethyldithiocarbamato)iron(III). Reduction to a stable iron(II) complex induced by ligand-to-metal charge transfer excitation

Chung I. Chang, Bing E. Xu, Radha Akella, Melanie H. Cobb, Elizabeth J. Goldsmith

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The photolysis of Fe^III(et₂dtc)₃ with et₂dtc^- = diethyldithiocarbamate in inert solvents (e.g., CH₃CN) and in the presence of 1,2-bis(diphenylphosphino)ethane (dppe) leads to the formation of Fe^II(et₂dtc)₂(dppe) and (et₂dtc)₂ = tetraethylthiuramdisulfide. At equimolar concentrations (2.76 × 10^-5 M) of Fe^III(et₂dtc)₃ and dppe the quantum yields are Φ = 0.007 at λ_irr = 333 nm and 0.003 at 436 nm. This photoreaction, which is initiated by ligand-to-metal charge transfer excitation, generates Fe^II(et₂dtc)₂ and a et₂dtc radical in the primary photochemical step. Product formation occurs by the interception of Fe^II(et₂dtc)₂ with dppe.

Original language	English (US)
Pages (from-to)	730-732
Number of pages	3
Journal	Inorganic Chemistry Communications
Volume	5
Issue number	9
DOIs	https://doi.org/10.1016/S1387-7003(02)00555-5
State	Published - Sep 2002

Keywords

Charge transfer
Electronic Spectra
Iron complexes
Photochemistry
Sulfur compounds

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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@article{cd7c0b0b4d7e4860bc05bcc559107afc,

title = "Photochemistry of tris(diethyldithiocarbamato)iron(III). Reduction to a stable iron(II) complex induced by ligand-to-metal charge transfer excitation",

abstract = "The photolysis of FeIII(et2dtc)3 with et2dtc- = diethyldithiocarbamate in inert solvents (e.g., CH3CN) and in the presence of 1,2-bis(diphenylphosphino)ethane (dppe) leads to the formation of FeII(et2dtc)2(dppe) and (et2dtc)2 = tetraethylthiuramdisulfide. At equimolar concentrations (2.76 × 10-5 M) of FeIII(et2dtc)3 and dppe the quantum yields are Φ = 0.007 at λirr = 333 nm and 0.003 at 436 nm. This photoreaction, which is initiated by ligand-to-metal charge transfer excitation, generates FeII(et2dtc)2 and a et2dtc radical in the primary photochemical step. Product formation occurs by the interception of FeII(et2dtc)2 with dppe.",

keywords = "Charge transfer, Electronic Spectra, Iron complexes, Photochemistry, Sulfur compounds",

author = "Chang, {Chung I.} and Xu, {Bing E.} and Radha Akella and Cobb, {Melanie H.} and Goldsmith, {Elizabeth J.}",

year = "2002",

month = sep,

doi = "10.1016/S1387-7003(02)00555-5",

language = "English (US)",

volume = "5",

pages = "730--732",

journal = "Inorganic Chemistry Communications",

issn = "1387-7003",

publisher = "Elsevier BV",

number = "9",

}

TY - JOUR

T1 - Photochemistry of tris(diethyldithiocarbamato)iron(III). Reduction to a stable iron(II) complex induced by ligand-to-metal charge transfer excitation

AU - Chang, Chung I.

AU - Xu, Bing E.

AU - Akella, Radha

AU - Cobb, Melanie H.

AU - Goldsmith, Elizabeth J.

PY - 2002/9

Y1 - 2002/9

N2 - The photolysis of FeIII(et2dtc)3 with et2dtc- = diethyldithiocarbamate in inert solvents (e.g., CH3CN) and in the presence of 1,2-bis(diphenylphosphino)ethane (dppe) leads to the formation of FeII(et2dtc)2(dppe) and (et2dtc)2 = tetraethylthiuramdisulfide. At equimolar concentrations (2.76 × 10-5 M) of FeIII(et2dtc)3 and dppe the quantum yields are Φ = 0.007 at λirr = 333 nm and 0.003 at 436 nm. This photoreaction, which is initiated by ligand-to-metal charge transfer excitation, generates FeII(et2dtc)2 and a et2dtc radical in the primary photochemical step. Product formation occurs by the interception of FeII(et2dtc)2 with dppe.

AB - The photolysis of FeIII(et2dtc)3 with et2dtc- = diethyldithiocarbamate in inert solvents (e.g., CH3CN) and in the presence of 1,2-bis(diphenylphosphino)ethane (dppe) leads to the formation of FeII(et2dtc)2(dppe) and (et2dtc)2 = tetraethylthiuramdisulfide. At equimolar concentrations (2.76 × 10-5 M) of FeIII(et2dtc)3 and dppe the quantum yields are Φ = 0.007 at λirr = 333 nm and 0.003 at 436 nm. This photoreaction, which is initiated by ligand-to-metal charge transfer excitation, generates FeII(et2dtc)2 and a et2dtc radical in the primary photochemical step. Product formation occurs by the interception of FeII(et2dtc)2 with dppe.

KW - Charge transfer

KW - Electronic Spectra

KW - Iron complexes

KW - Photochemistry

KW - Sulfur compounds

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U2 - 10.1016/S1387-7003(02)00555-5

DO - 10.1016/S1387-7003(02)00555-5

M3 - Article

AN - SCOPUS:0036724172

SN - 1387-7003

VL - 5

SP - 730

EP - 732

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

IS - 9

ER -

Photochemistry of tris(diethyldithiocarbamato)iron(III). Reduction to a stable iron(II) complex induced by ligand-to-metal charge transfer excitation

Abstract

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ASJC Scopus subject areas

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