OBSERVATION OF GASEOUS LI4P - A HYPERVALENT MOLECULE

被引：34

作者：

KUDO, H

ZMBOV, KF

机构：

[1] Japan Atomic Energy Research Institute, Ibaraki-ken, 319-11, Tokai-mura

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 187卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(91)90487-T

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

With Knudsen-effusion mass spectrometry, gaseous Li2P, Li3P, Li4P, LiP2 and Li2P2 species were observed in the equilibrium vapor over Li3P(s) at temperatures above 1100 K. The atomization energies of the Li2P, Li3P and Li4P molecules were determined to be 450 +/- 24, 648 +/- 26 and 873 +/- 35 kJ/mol, respectively. The enthalpy for the reaction Li4P(g) --> Li3P(g) + Li(g) was 186 +/- 24 kJ/mol, indicating that the Li4P molecule was stable towards dissociation to form a Li3P molecule. The Li4P molecule, observed for the first time, was revealed to be a hypervalent molecule.

引用

页码：77 / 80

页数：4

共 11 条

[1]

Chase M.W.J., 1985, JANAF THERMOCHEMICAL, V14

[2]

HILDENBRAND DL, 1970, INT J MASS SPECTROM, V4, P75

[3]

Kossel W, 1916, ANN PHYS-BERLIN, V49, P229

[4] MASS-SPECTROMETRIC STUDY OF VAPORIZATION OF LI2O(S) AND THERMOCHEMISTRY OF GASEOUS LIO, LI2O, LI3O, AND LI2O2 [J].