Electronic transitions of platinum monoboride.
Electronic transitions of platinum monoboride.
复制标题
一硼化铂的电子跃迁。
DOI：
10.1063/1.4754157
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Cheung
中科院分区：
文献类型：
--
作者：
Y. Ng;Y. Wong;H. Pang;A. Cheung
首次观察到一硼化铂（PtB）自由基的电子跃迁光谱。利用激光汽化/无反应射流膨胀和激光诱导荧光光谱技术，研究了PtB在455~520 nm可见光区的光谱。气相 PtB 分子是通过在氩气中接种的乙硼烷 (B(2)H(6)) 与激光烧蚀的铂原子反应生成的。记录并分析了 Pt(11)B 自由基的七个振动带。 Pt同位素分子和Pt(10)B同位素的观察证实了带的载体。确定了两种不同的过渡系统，即：[20.2]3/2-X(2)Σ(+)和[21.2]1/2-X(2)Σ(+)系统。 PtB 被确定为具有 X(2)Σ(+) 基态，并且键长 r(e) 被确定为 1.741 Å。
The electronic transition spectrum of platinum monoboride (PtB) radical has been observed for the first time. Using laser vaporization∕reaction free jet expansion and laser induced fluorescence spectroscopy, the optical spectrum of PtB in the visible region between 455 and 520 nm has been studied. Gas-phase PtB molecule was produced by the reaction of diborane (B(2)H(6)) seeded in argon and laser ablated platinum atom. Seven vibrational bands of the Pt(11)B radical have been recorded and analyzed. The observation of Pt isotopic molecules and the Pt(10)B isotope confirmed the carrier of the bands. Two different transition systems, namely: the [20.2]3/2-X(2)Σ(+) and the [21.2]1/2-X(2)Σ(+) systems were identified. PtB was determined to have an X(2)Σ(+) ground state and the bond length, r(e), was determined to be 1.741 Å.