Vibrational Spectra and Assignments for the Fundamental Vibrations of Imidazolidine-2-thione and -2-selenone

Dwarakanath, K and Sathyanarayana, DN (1979) Vibrational Spectra and Assignments for the Fundamental Vibrations of Imidazolidine-2-thione and -2-selenone. In: Bulletin of the Chemical Society of Japan, 52 (9). pp. 2699-2704.

PDF Spectra.pdf - Published Version Restricted to Registered users only Download (955kB) | Request a copy

Abstract

Infrared spectra of imidazolidine-2-thione (N,N?-ethylenethiourea, ETU) and its N,N?-deuterated (ETU-d2) and S-methylthiouronium iodides have been recorded from 4000 to 30 cm?1. Normal coordinate analyses of ETU and ETU-d2 have been made for all the fundamental frequencies, employing a Urey-Bradley potential function supplemented with valence type constants for the out of plane modes of the planar skeleton. Raman frequencies of ETU from literature have been utilised. The results of the vibrational analyses are discussed in relation to the group frequencies in structurally related molecules and frequency shifts on deuteration and S-methylation. The normal coordinate treatment is also performed for the planar vibrations of imidazolidine-2-selenone (N,N?-ethyleneselenourea, ESU) to propose assignments for ESU and so also to support the assignments of ETU.

Item Type:	Journal Article
Publication:	Bulletin of the Chemical Society of Japan
Publisher:	Chemical Society of Japan
Additional Information:	Copyright of this article belongs to Chemical Society of Japan.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	28 Dec 2010 06:32
Last Modified:	28 Dec 2010 06:32
URI:	http://eprints.iisc.ac.in/id/eprint/33779

Actions (login required)

View Item