science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: thiophene					Other Names: thiacyclopentadiene

Formula: C4H4S						CAS-No.: 110-02-1

Study: absorption spectrum

                
Authors: S.L.N.G. Krishnamachari, T.V. Venkitachalam

Title: A new transient absorption spectrum observed in the flash photolysis of thiophene

Journal/Source: Chem. Phys. Lett., 55, 116-118, (1978); doi:10.1016/0009-2614(78)85147-1


Data:  

Energy/Wavelength range: 377.0 - 417.0 nm

Resolution: 

Temperature:

Temperature dependence: 

Pressure/Concentration: 

Phase: gas

pH:


Comments: In the flash photolysis of thiophene diluted with argon, a transient absorption spectrum in the region 3770 Å 
and 4170 Å has been observed. The new absorption spectrum which consists of about 30 narrow and sharp red degraded 
bands could be analysed into an electronic system with the origin band at 4113.8 Å. The bands could tentatively assigned 
to the C4H3 radical.

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