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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >The Visible Absorption Spectrum of ~16OBr~16O and ~18OBr~18O Isolated in Solid Ne
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The Visible Absorption Spectrum of ~16OBr~16O and ~18OBr~18O Isolated in Solid Ne

机译:固体Ne中〜16OBr〜16O和〜18OBr〜18O的可见吸收光谱

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The visible absorption spectrum of OBrO isolated in solid Ne is recorded in the 15 800-20 500 cm~(-1) region. Unlike that reported previously for OBrO in solid Ar, the spectrum in solid Ne has sharp zero-phonon lines (ZPL) exhibiting short progressions of bending (v'_2) mode built up on a long progression of symmetric stretching (v'_1) mode. Use of ~18O isotopic labeling resolves discrepancies in vibrational assignments proposed previously. Fitting of the wavenumbers of ZPL yields T_0=15 818.4+-0.2, #omega#_1'=642.77+-0.13, #omega#_2'=223.21+-0.42, x_11'=-2.85+-0.01, x_22'=-1.07+-0.13, and x_12'=-2.49+-0.04 cm~(-1) for the C~2A_2<-X~2B_1 transition of ~16O~79Br~16O and T_0=15 832.0+-0.2, #omega#_1'=612.49+-0.12, #omega#_2'=214.01+-0.39, x_11'=-2.61+-0.01, x_22'=-1.28+-0.12, and x_12'=-2.63+-0.04 cm~(-1) for ~18O~79Br~18O. A weak line at 16744.3 cm~(-1) may be assigned as 3_0~2 to yield 2v_3=925.7 cm~(-1) for ~16O~79Br~16O. Observed spectral parameters agree well with high-evel theoretical predictions by Peterson.
机译:固体Ne中分离出的OBrO的可见吸收光谱记录在15 800-20 500 cm〜(-1)区域。与先前报道的固体Ar中OBrO的光谱不同,固体Ne中的光谱具有清晰的零声子线(ZPL),表现出较短的弯曲(v'_2)模态,建立在较长的对称拉伸(v'_1)模态上。 〜18O同位素标记的使用可解决先前提出的振动分配中的差异。 ZPL波数的拟合产生T_0 = 15 818.4 + -0.2,#omega#_1'= 642.77 + -0.13,#omega#_2'= 223.21 + -0.42,x_11'=-2.85 + -0.01,x_22'=-对于〜16O〜79Br〜16O的C〜2A_2 <-X〜2B_1跃迁和T_0 = 15 832.0 + -0.2,#omega#,1.07 + -0.13和x_12'=-2.49 + -0.04 cm〜(-1) _1'= 612.49 + -0.12,#omega#_2'= 214.01 + -0.39,x_11'=-2.61 + -0.01,x_22'=-1.28 + -0.12,x_12'=-2.63 + -0.04 cm〜(- 1)〜18O〜79Br〜18O。可以将16744.3 cm〜(-1)处的弱线指定为3_0〜2,以得到16v〜79Br〜16O的2v_3 = 925.7 cm〜(-1)。观测到的光谱参数与Peterson的高层理论预测非常吻合。

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