Croatica Chemica Acta, Vol. 65 No. 1, 1992.
Izvorni znanstveni članak
Spectroscopic Studies of Salts of 4-Methyl-benzenesulfonic acid. I. The Spectrum of Water in the Hexahydrates of Some Metal 4-Methyl-benzenesulfonates
Mirjana Ristova
; Department of Chemistry, Faculty of Science, University of »Kiril i Metodij«, P.O. Box 162, 91001 Skopje, Macedonia
Bojan Šoptrajanov
; Department of Chemistry, Faculty of Science, University of »Kiril i Metodij«, P.O. Box 162, 91001 Skopje, Macedonia
Kiro Stojanoski
; Department of Chemistry, Faculty of Science, University of »Kiril i Metodij«, P.O. Box 162, 91001 Skopje, Macedonia
Sažetak
Hexahydrates of the 4-methylbenzenesulfonates (p-toluenesulfonates) of magnesium, nickel, cobalt, and zinc were prepared and characterized by elemental and thermogravimetric analyses. The X-ray powder diffractograms were also recorded.
The main attention, however, was directed towards the study of the infrared spectra of these compounds and of their partially deuterated analogues. An analysis of the spectrum of water is presented in the present communication.
The spectra were recorded at room and liquid-nitrogen temperatures and, when necessary, at intermediate temperatures as well.
The spectra of the nickel, cobalt and magnesium compounds are quite similar, whereas those of the zinc analogue exhibit some differences.
Fewer bands than expected were found in all regions where the vibrations of the water molecules were expected to appear. The bands of water librational origin were located on the basis of their temperature sensitivity and shift on deuteration.
It was concluded that hydrogen bonding is not the only factor determining the position of the bands that originate from stretching and bending water vibrations.
Ključne riječi
Hrčak ID:
137276
URI
Datum izdavanja:
15.6.1992.
Posjeta: 378 *