IR Photodissociation Spectroscopy of Na~+[H_2O]_m[C_6F_6]_n Clusters: Evidence for Separation of Aqueous and Nonaqueous Phases

G. Naresh Patwari; James M. Lisy

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IR Photodissociation Spectroscopy of Na~+[H_2O]_m[C_6F_6]_n Clusters: Evidence for Separation of Aqueous and Nonaqueous Phases

机译：Na〜+ [H_2O] _m [C_6F_6] _n团簇的红外光解离光谱：水相和非水相分离的证据

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The structures of Na~+[H_2O]_m[C_6F_6]_n cluster ions were investigated using IR photodissociation (IRPD) spectroscopy in the O-H stretching region. The IRPD spectra of Na~+[H_2O]_1[C_6F_6]_n cluster ions indicate that even the addition of eight C_6F_6 moieties does not significantly alter the vibrational frequencies of the O-H stretches. In the case of Na~+[H_2O]_4[C_6F_6]_n clusters, no changes were observed in the symmetric stretching vibration upon addition of 1-4 C_6F_6's. However, the width of the asymmetric stretching vibration increased with the number of C_6F_6, which can be attributed to vibrational relaxation. The absence of any evidence of a significant hydrogen-bonded interaction between H_2O and C_6F_6 for a wide range of cluster sizes and composition can best be explained as a separation between these two molecular species, that is, phase separation.

机译：利用红外光解（IRPD）光谱研究了O〜H拉伸区域Na〜+ [H_2O] _m [C_6F_6] _n团簇离子的结构。 Na〜+ [H_2O] _1 [C_6F_6] _n团簇离子的IRPD光谱表明，即使添加八个C_6F_6部分也不会显着改变O-H链段的振动频率。在Na〜+ [H_2O] _4 [C_6F_6] _n团簇的情况下，添加1-4个C_6F_6后，对称拉伸振动没有变化。但是，不对称拉伸振动的宽度随着C_6F_6的数量而增加，这可以归因于振动弛豫。对于宽范围的簇尺寸和组成，没有任何证据表明H_2O和C_6F_6之间存在显着的氢键相互作用，可以最好地解释为这两种分子之间的分离，即相分离。

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《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2003年第45期|共4页
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G. Naresh Patwari; James M. Lisy;
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中图分类物理化学（理论化学）、化学物理学;
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IR Photodissociation Spectroscopy of Na~+[H_2O]_m[C_6F_6]_n Clusters: Evidence for Separation of Aqueous and Nonaqueous Phases

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