Thermal expansion, elastic and thermoelastic properties including crystal structure analyses of K-, Rb- and Cs-nitrilotriacetates
- Author(s)
- Eiken Haussühl, S Haussühl, Ekkehart Tillmanns
- Abstract
Single crystals of the title compounds having optical quality and dimensions up to 60 mm have been grown from aqueous solutions. X-ray crystal structure analyses of K2H[N(CH2COO)3] ž H2O (I), K2H[N(CH2COO)3] ž H2O (II), and Cs2H[N(CH2COO)3] ž H2O (III) yielded: Table presented. Thermal expansion, elastic and thermoelastic properties of the title compounds have been measured employing mechanical and optical dilatometers and ultrasonic resonance techniques, respectively. They possess quite different structural motifs contrary to most other salts having a common anion. An anomalous large molecular volume and a small mean elastic stiffness of K2H[N(CH 2COO)3] ž 2 H2O is qualitatively interpreted by the small number of Coulomb interactions between the single charged cations and oxygen atoms of the anions. Differences in thermal and elastic properties of corresponding alkali nitrilotriacetates and alkali salts of other large anions are discussed.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Universität zu Köln
- Journal
- Zeitschrift für Kristallographie : international journal for structural, physical, and chemical aspects of crystalline materials
- Volume
- 219
- Pages
- 644-651
- No. of pages
- 8
- ISSN
- 0044-2968
- Publication date
- 2004
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1051 Geology, Mineralogy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/b9dfaf75-5147-4420-a7dc-9eb4bfae20c0