The Journal of Physical Chemistry A

Photochemistry of 2, 2, 4, 4-tetramethyl-3-thietan-1-ylidene: A heterocyclic carbene with an unusually short lifetime and evidence for a nonclassical structure

JR Snoonian, MS Platz

Index: Snoonian, John R.; Platz, Matthew S. Journal of Physical Chemistry A, 2001 , vol. 105, # 10 p. 2106 - 2111

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Citation Number: 6

Abstract

Laser flash (308 nm) and steady-state photolysis (300 nm) of Δ3-1, 3, 4-oxadiazoline (3) produces a transient that can be trapped with pyridine to give an adduct with λmax= 350 nm, attributed to ylide 10. Laser flash photolysis (LFP) studies of the ylide indicate that the value of k pyrτ (where k pyr is the absolute rate constant of carbene reaction with pyridine and τ is the carbene lifetime) of the reactive intermediate is 25 times smaller than that deduced for ...