Photoreactivity of Titanocene Pentasulfide

1998 ◽  
Vol 53 (2) ◽  
pp. 224-226 ◽  
Author(s):  
Horst Kunkely ◽  
Arnd Vogler
Keyword(s):  
Charge Transfer ◽  
Electronic Spectrum ◽  
Elemental Sulfur ◽  
Reductive Elimination ◽  
Metal Charge ◽  
Long Wavelength ◽  
Wavelength Absorption ◽  
Metal Charge Transfer

Abstract The electronic spectrum of Cp2TiS5 shows a long-wavelength absorption at λ max = 492 nm which is assigned to the lowest-energy S52- → TiIV ligand-to-metal charge transfer (LMCT) transition. The photolysis of the complex in CH2CI2 leads to the formation of Cp2TiCl2 and elemental sulfur. It is suggested that LMCT excitation initiates a reductive elimination with the extrusion of S5 while the reduced titanocene is reoxidized by the solvent.

Photochemistry of Aqueous Tetrathioantimonate(V)

1995 ◽  
Vol 50 (8) ◽  
pp. 1155-1157 ◽  
Author(s):  
H. Kunkely ◽  
A. Vogler
Keyword(s):  
Charge Transfer ◽  
Absorption Band ◽  
Electronic Spectrum ◽  
Redox Reaction ◽  
Elemental Sulfur ◽  
Metal Charge ◽  
Metal Charge Transfer

The electronic spectrum of [SbS4]3- in 10-3 M NaOH displays an absorption band at λmax = 285 nm which is assigned to a ligand-to-metal charge transfer (LMCT) transition. Upon LMCT excitation [SbS4]3- undergoes an intramolecular redox reaction with the formation of [SbS3]3- and elemental sulfur (φ = 0.11 at λirr = 333 nm).

Photolysis of Naphthol Green B in Aqueous Solution. Photoreduction of Fe(III) Induced by Ligand-to-Metal Charge Transfer Excitation

2003 ◽  
Vol 58 (9) ◽  
pp. 922-924 ◽  
Author(s):  
Horst Kunkely ◽  
Arnd Vogler
Keyword(s):  
Aqueous Solution ◽  
Charge Transfer ◽  
Quantum Yield ◽  
Metal Charge ◽  
Long Wavelength ◽  
Mlct Transition ◽  
Wavelength Absorption ◽  
Charge Transfer Excitation ◽  
Naphthol Green B ◽  
Metal Charge Transfer

The intense long-wavelength absorption of Naphthol Green B at λmax = 712 nm is assigned to a ligand-to-metal charge transfer (MLCT) transition. LMCT excitation of the complex in aqueous solution leads to the reduction of Fe(III) to Fe(II) with a quantum yield of ϕ = 1.14×10−3 at λirr = 577 nm.

Tuning metal to metal charge transfer properties in cyanidometal-bridged complexes by changing the auxiliary ligand on the bridge

2021 ◽  
Author(s):  
Qing-Dou Xu ◽  
Chen Zeng ◽  
Shao-Dong Su ◽  
Yu-Ying Yang ◽  
Sheng-Min Hu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Auxiliary Ligand ◽  
Metal Charge ◽  
Transfer Properties ◽  
Metal Charge Transfer

This work shows that the energy of MMCT in cyanidometal-bridged complexes can be tuned systematically by changing the auxiliary ligand of the cyanidometal bridge.

The fluorescence properties of tiara like structural thiolated palladium clusters

2017 ◽  
Vol 46 (38) ◽  
pp. 12964-12970 ◽  
Author(s):  
Jishi Chen ◽  
Yanze Pan ◽  
Zonghua Wang ◽  
Peng Zhao
Keyword(s):  
Charge Transfer ◽  
Fluorescence Properties ◽  
Metal Charge ◽  
Palladium Clusters ◽  
Metal Charge Transfer

A series of tiara like structural Pdn(SR)2n (5 ≤ n ≤ 20) nanoclusters exhibit emission at 620 nm with excitation at around 268 nm. Their emission is due to ligand to metal charge transfer.

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