Ridley Trevor, Lawley Kenneth P, Donovan Robert J, Alekseev Vadim A
School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh, Scotland, UKEH9 3JJ.
Phys Chem Chem Phys. 2007 Nov 28;9(44):5885-90. doi: 10.1039/b710924e. Epub 2007 Sep 26.
A range of vibrational levels of the D 0(u)(+)((3)P(2)) and F' 0(u)(+)((1)D(2)) ion-pair states of I(2) is shown to be easily generated by amplified spontaneous emission (ASE) from their more accessible partners, E 0(g)(+)((3)P(2)) and f' 0(g)(+)((1)D(2)), in sufficient concentration for dispersed fluorescence studies of the D 0(u)(+)((3)P(2)) --> 0(g)(+)(bb) and F' 0(u)(+)((1)D(2)) --> 0(g)(+)(bb) transitions to be carried out. T(0) (J = 49) of this shallow-bound 0(g)(+)(bb) valence state is unambiguously determined and an improved R(e) value of 3.952 +/- 0.005 A is obtained from optimizing the fit of the intensities of the vibrational progressions in the 0(g)(+)(bb) state, and T(e) is found to be 27311.3 +/- 2 cm(-1), leading to D(e) = 442.0 +/- 2 cm(-1).
I₂的D₀(u)(⁺)((³)P₂)和F'₀(u)(⁺)((¹)D₂)离子对态的一系列振动能级被证明可通过从更容易获得的伙伴E₀(g)(⁺)((³)P₂)和f'₀(g)(⁺)((¹)D₂)的放大自发发射（ASE）轻松产生，其浓度足以进行D₀(u)(⁺)((³)P₂)→0(g)(⁺)(bb)和F'₀(u)(⁺)((¹)D₂)→0(g)(⁺)(bb)跃迁的色散荧光研究。明确确定了这种浅束缚的0(g)(⁺)(bb)价态的T₀(J = 49)，并通过优化0(g)(⁺)(bb)态中振动进展强度的拟合获得了3.952±0.005 Å的改进R(e)值，发现T(e)为27311.3±2 cm⁻¹，从而得到D(e)=442.0±2 cm⁻¹。
