SOLVATOCHROMIC AND SUBSTITUENT EFFECT ON ELECTRONIC ABSORPTION OF ARENETRICARBONYLCHROMIUM(0) COMPLEXES

Agus Abhi Purwoko (Study Program of Chemistry Education, Faculty of Teacher Training and Education, University of Mataram, Jl. Majapahit 62 Mataram)

Indonesian Journal of Chemistry
Vol 8, No 1 (2008)

A number of arenetricarbonylchromium(0) complexes, [(η6-arene)Cr(CO)3], in which arene = benzene, chlorobenzene, phenyltrimethylsilane, and acenaphthene were synthesized. Electronic absorptions of these complexes were recorded in various solvents, ranging from polar to non polar ones; i.e. methanol, methylene chloride, chloroform, benzene, and isooctane. These chromium tricarbonyl complexes show lowest electronic absorption in the energy range of 313 - 320 nm, with relatively high intensity (ε = 0,9 - 2,0 x 104 M-1cm-1). Detailed discussion of the solvent and substituent effect on electronic absorption of these complexes are presented in this article.