Thermal expansion, elastic and thermoelastic properties including crystal structure analyses of K-, Rb- and Cs-nitrilotriacetates
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Eiken Haussühl
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] · H2O (I), K2H[N(CH2COO)3] · 2 H2O (II), and Cs2H[N(CH2COO)3] · H2O (III) has been done. 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(CH2COO)3] · 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.
© 2004 Oldenbourg Wissenschaftsverlag GmbH
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Articles in the same Issue
- Structural changes upon the temperature dependent C2/c → P21/c phase transition in LiMe3+Si2O6 clinopyroxenes, Me = Cr, Ga, Fe, V, Sc and In
- X-ray diffraction study of decagonal Al—Co—Ni as a function of composition
- The correlation between metal oxidation state and bond valence parameters for M—O bonds (M = V, Fe and Cu). A simple method to search for the metal oxidation-state independent parameter pairs
- The crystal structures of Hg7Se3O13H2 and Hg8Se4O17H2 — two mixed-valent mercury oxoselenium compounds with a multifarious crystal chemistry
- Calculated growth form of melilites
- Similarities between the clathrasils DOH, DDR, MEP and MTN
- Thermal expansion, elastic and thermoelastic properties including crystal structure analyses of K-, Rb- and Cs-nitrilotriacetates
- Dichloro(cyclohexilidene-1-methylene)(phenyl)Te(IV). Looking for the theoretical treatment
- Synthesis, crystal structure and molecular conformation of (±)-1-oxoferruginol and (±)-shonanol
- Triphenylphosphine adducts of silver di-iso-propyl dithiophosphate
- In-situ pressure crystallization and X-ray diffraction study of 1,1,2,2-tetrachloroethane at 0.5 GPa
- Books Received
