✦ LIBER ✦

Origin of spurious bands in the infrared spectrum of Ba2TiO4

✍ Scribed by F. Wijzen; A. Rulmont; P. Tarte

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 316 KB
Volume: 50
Category: Article
ISSN: 1386-1425
DOI: 10.1016/0584-8539(94)80003-0

No coin nor oath required. For personal study only.

✦ Synopsis

IR spectrum of Ba,TiO, synthesized from "pure" commercial samples of TiOz and BaCO, exhibits between I200 and 950 cm-' a more-or-less complex pattern of sharp, very weak bands whose intensity depends on the origin of the reagents, and which disappear completely if very pure reagents are used for the synthesis. It is shown that most of these bands are due to a small quantity (e.g. 0.5 mole % or less) of phosphate and/or sulfate ions (brought by the reagents) replacing the TiO, tetrahedra in the Ba,TiO., structure and thus forming a "dilute" solid solution. This is responsible for the sharpness of the IR bands and for their easy observation. even at fairly low concentrations [e.g. 0. I mole % for the (PO,)'-ion]. The four investigated TiOr samples are free from sulfate, but all of them (including pro analysi samples) contain a small amount (OS-0.1%) of phosphate, not disclosed in TiO, itself, but easily evidenced after transformation into Ba,TiO,.

📜 SIMILAR VOLUMES

Infrared spectrum of the ν4 band of hydr

Infrared spectrum of the ν4 band of hydrazoic acid

✍ Jørgen Bendtsen; Flemming M. Nicolaisen 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 507 KB

The Fundamental Bands in the Infrared Sp

The Fundamental Bands in the Infrared Spectrum of Stibine (SbH3)

✍ L Fusina; G Di Lonardo 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 162 KB

The infrared spectrum of stibine, SbH 3 , has been recorded in the regions between 720 and 1000 cm -1 and between 1750 and 2020 cm -1 at a resolution of about 0.004 cm -1 . Rovibrational transitions belonging to the ν 2 , ν 4 bending and ν 1 , ν 3 stretching fundamental bands have been measured and

High resolution infrared spectrum of the

High resolution infrared spectrum of the ν4 band of DCCF

✍ M. Huhanantti; R. Anttila; J. Kauppinen 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 466 KB

Infrared spectrum of DCNO: ν2 band at 4.

Infrared spectrum of DCNO: ν2 band at 4.8 μm

✍ Eugene L. Ferretti; K. Narahari Rao 📂 Article 📅 1975 🏛 Elsevier Science 🌐 English ⚖ 153 KB

Measurement and analysis of the infrared

Measurement and analysis of the infrared absorption spectrum of the 2ν2 band of 12CH4

✍ Robert H. Hunt; J.E. Lolck; Alan G. Robiette; Linda R. Brown; Robert A. Toth 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 701 KB

Study of overtones and combination bands

Study of overtones and combination bands in the infrared spectrum of ONCl

✍ Jean Vergès; Jacqueline Chevillard; Claude Alamichel; Jean-Roger Etcheberry 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 199 KB

The 2v,, 2v, + vl, 20, + v2, 2u, +2v2, 3u,, 3v, + vj and 4ul infrared bands of ONCI have been recorded. A least-squares calculation over a few lines of the 3 v, band of '60'4N'5Cl, with a rms deviation of 0.003 cm-', provided values for several constants of the v, = 3 level.