ROTATIONAL SPECTRUM OF PHOSPHONIUM LODIDE VAPOR
ROTATIONAL SPECTRUM OF PHOSPHONIUM LODIDE VAPOR
复制标题
DOI：
10.1039/ft9918700507
复制
发表时间：
1991-02-21
期刊：
影响因子：
--
通讯作者：
LUSCOMBE, GJ
中科院分区：
文献类型：
--
作者：
HOWARD, NW;LEGON, AC;LUSCOMBE, GJ
用脉冲喷嘴傅立叶变换微波光谱法在固体碘化磷上方的蒸气中观测了伴生物质（PH3， HI）的基态旋转光谱。为了拟合观测到的这种对称顶同位素体的超精细频率，必须考虑碘核四极耦合常数随J和K的变化，并考虑碘自旋-旋转耦合。对三种同位素体（PH3，HI）、（PH3，DI）和（PH2D， HI）的光谱常数进行了解释，得出结论：所观察到的物质的原子核顺序为H3P…HI，对于三个中的第一个，r(P…I) = 4.3822埃。系列HX的亲电性顺序为f> Cl > CN > Br > l，亲核性顺序为HCN > HF > HCl几乎等于Hl。
The ground-state rotational spectrum of the associated species (PH3, HI) has been observed in the vapour above solid phosphonium iodide by means of pulsed-nozzle, Fourier-transform microwave spectroscopy. To fit the observed hyperfine frequencies of this symmetric-top isotopomer it is necessary to allow for the variation of the iodine nuclear quadrupole coupling constant with J and K as well as to take into account iodine spin-rotation coupling. Interpretation of the spectroscopic constants of the three isotopomers (PH3,HI), (PH3,DI) and (PH2D, HI) leads to the conclusion that the observed species have nuclei in the order H3P...HI and, for the first of the three, that r(P...I) = 4.3822 angstrom. For the series HX the order of the electrophilicity is F > Cl > CN > Br > l while the order of the nucleophilicity is HCN > HF > HCl almost-equal-to Hl.