ON THE INFRARED SPECTRUM OF LITHIUM-MONOETHYLENE - COMPLEMENTARY INFRARED ARGON MATRIX AND NORMAL COORDINATE ANALYSIS

摘要

The vibrational spectrum of ground state lithium-monoethylene isolated in argon at low temperature has been reinvestigated for various isotopic forms (Li-6/(LiC2H4)-Li-7, Li-6/(LiC2H4)-Li-7-C-13 or Li-6/(LiC2D4)-Li-7). Additional information concerning some five yet unobserved fundamentals have been gathered, and assignments are suggested based on harmonic force-field calculations. Comparisons with recent DFT theoretical calculations outline the need for improved models. (C) 1997 Elsevier Science B.V. [References: 15]