UV-VISIBLE AND IR SPECTROSCOPIC STUDIES OFRUTHENIUM(II)-XYLENOL ORANGE COMPLEX

Olga Solovey-Vandersteen,^a Teodoziya Vrublevska,^a and Heinrich Lang^b

^a Ivan Franko Lviv National University, Kyryla & Mefodiya Str. 6, 79005 Lviv, Ukraine

^b Chemnitz, University of Technology, Straße der Nationen 62, 09107 Chemnitz, Germany

Abstract

The formation of a Ru^II-xylenol orange (XO) complex has been investigated. The respective complex was formed within the pH range of 2.5 to 5.0 during 90 min of heating and has an absorbance maximum at 583 nm. The molar extinction coefficient is 28800 L mol^-1 cm^-1. The composition of the Ru^II-XO complex was determined by the mole ratio and continuous variations methods. The structure of Ru^II-XO was proposed according to IR spectroscopic data.

Key words: ruthenium, xylenol orange, complex, UV-VIS, IR spectroscopy, determination