𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Intercalation of Water into Anhydrous Vanadyl Phosphate Studied by the Infrared and Raman Spectroscopies

✍ Scribed by Miroslava Trchová; Pavla Čapková; Pavel Matějka; Klára Melánová; Ludvı́k Beneš; Eva Uhlı́řová

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
285 KB
Volume
148
Category
Article
ISSN
0022-4596

No coin nor oath required. For personal study only.

✦ Synopsis

The course of intercalation of water into 1 -VOPO 4 and its monohydrate has been studied by infrared and Raman spectroscopy. The mechanism of hydration has been proposed on the base of these measurements. No formation of vanadyl phosphate monohydrate was observed during hydration of the anhydrous form under ambient conditions. The vanadyl stretching band appears to be especially sensitive to atoms coordinated to the vanadium within an octahedral arrangement in the host lattice structure. During the intercalation its position at 1035 cm ؊1 in the anhydrous form changes to 995 cm ؊1 , typical for monoand dihydrates. The additional peak at 1017 cm ؊1 occurring in the initial stages of intercalation has been explained by the random stacking of intercalated and nonintercalated layers in the sample.

📜 SIMILAR VOLUMES

A Study of the Hydration and Dehydration
A Study of the Hydration and Dehydration of Vanadyl Arsenate by X-ray Diffraction Analysis, Infrared and Raman Spectroscopy
✍ Ludvík Beneš; Klára Melánová; Vítězslav Zima; Miroslava Trchová; Eva Uhlířová; P 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 314 KB 👁 2 views

The course of the intercalation and deintercalation of water molecules in vanadyl arsenate has been studied by X-ray diffraction analysis and by infrared and Raman spectroscopies. The formation of VOAsO 4 hydrates at ambient temperature has been found to depend on relative humidity (r.h.): VOAsO 4 ⋅

Conformational studies of the trypsin–al
Conformational studies of the trypsin–aluminum(III) complex in solution by Raman and Fourier transform infrared attenuated total reflectance spectroscopy
✍ Vito Di Noto; Lisa Dalla Via; Paolo Zatta 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 145 KB 👁 2 views

This paper presents the results of Raman and Fourier transform IR studies investigating the interaction between Al(III) and trypsin, carried out in order to understand better how Al(III) can modify the biological properties of this proteolytic enzyme. The results indicate that Al(III) inÑuences the

The structure of tri-proline in water pr
The structure of tri-proline in water probed by polarized Raman, Fourier transform infrared, vibrational circular dichroism, and electric ultraviolet circular dichroism spectroscopy
✍ Reinhard Schweitzer-Stenner; Fatma Eker; Alejandro Perez; Kai Griebenow; Xiaolin 📂 Article 📅 2003 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 262 KB 👁 2 views

Tripeptidesserve as model systems for understanding the so-called random-coil state of peptides and proteins. While it is well known that polyproline or proline-rich polypeptides adopt the very regular polyproline-II (PPII) or left-handed 3(1)-helix conformation, it was thus far not clear whether th

The Association of Tetraalkylammonium Io
The Association of Tetraalkylammonium Ions with Poly(vinyl methyl ether) in Water and its Effect on Phase-Separation Behavior as Studied by Micro-Raman Spectroscopy
✍ Yasushi Maeda; Hiroki Yamamoto; Isao Ikeda 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 138 KB

## Abstract **Summary:** The thermosensitive phase‐separation of poly(vinyl methyl ether) in water has been investigated by micro‐Raman spectroscopy in the presence of tetraalkylammonium bromides. The equilibrium distribution of both polymer and salts to the polymer‐rich and solvent‐rich phases was