✦ LIBER ✦

Vibrational spectra of the charge transfer complexes between organic sulfides and iodine

✍ Scribed by T. Tveter; P. Klaeboe; C.J. Nielsen

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 798 KB
Volume: 40
Category: Article
ISSN: 1386-1425
DOI: 10.1016/0584-8539(84)80061-6

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✦ Synopsis

1.r. spectra of the charge transfer complexes between nine organic sulfides (as well as diethvlselenide) with iodine were recorded between 1SOOand 400 cm-' in CS, and Ccl, solutions and in the region 60&50&1-' in C61-l~2 and C6Hs solutions. Raman spectra of the complexes were recorded below 600 cm-'. For each system, i.r. and Raman bands in the 2OG160 cm-' were assigned to the I-I stretching mode of the complex. Additional i.r. bands below 160cm-', absent in Raman, were ascribed to intermolecular S..I stretching vibrations. The integral intensities of these bands were determined and correlated with the thermodynamic functions. Some Raman active fundamentals of 1,4dithiane became i.r. active in the iodine complex in accordance with a break down of the Czi symmetry. A force constant calculation was carried out for the dimethylsulfideiodine complex and simplified calculations of the three point mass models were made for all the systems.

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