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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

12 Issues per year


IMPACT FACTOR 2016: 0.631

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1865-7117
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Volume 28, Issue 7-8 (Aug 1973)

Issues

Zur Chemie von Uranglimmern mit Trimetavanadationen und Schichstruktur (Uvanit), II / The Chemistry of Uranylvanadates with Trimetavanadate Ions and Layer Structure (Uvanite), II

Uvanit mit organischen Zwischenschichtkationen und seine Intercalationskomplexe mit n-Alkylaminen und n-Alkanolen / Uvanite with Organic Interlayer Cations and its Intercalation Complexes with n-Alkylamines and n-Alkanols

Klaus Beneke / Ulrich Grosse-Brauckmann / Gerhard Lagaly / Armin Weiss
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/znb-1973-7-805

The interlayer cations of uvanite can be exchanged quantitatively by n-alkylammoniumions according to

M+[UO2V3O9] + CnH 2n+1NH3+⇄ CnH2n+1NH3[UO2V3O9] + M+.

In the stoichiometric compounds the alkyl chains of the cations (n= 6-18) are poorlyordered in monolayers and oriented nearly perpendicular to the uranyltrimetavanadatelayers though the space filling is unfavorable with this arrangement. During the cationexchange at pH = 7-9 additional free amine molecules are taken up yielding 1:1 intercalationcomplexes

(CnH2n+1NHs) (CnH an+1NH2) [UO2V3O9]

with close-packed, well ordered monolayers of alkyl compounds. With excess of pureamines or pure alkanols 1: 3 intercalation complexes

(CnH2n+1NH3) (CnH2n+1NH2),[UO2V3O9] or

(CnH2n+1NH3) (Cn·H2n+1OH )s[UO2V3O9

(n, n′ = 6-18] are formed with the alkyl chains ordered to bimolecular layers. These

complexes rearrange at higher temperature into new phases as a consequence of rotationalisomerisation of the alkyl chains.

Keywords: Uvaniteuranyltrim etavanadatealkylamine complexesalkanol complexesintercalation compounds

About the article

Received: 1973-03-27

Published Online: 2014-06-02

Published in Print: 1973-08-01


Citation Information: Zeitschrift für Naturforschung B, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-1973-7-805.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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