Universität zu Köln

Kulikov, Vladislav and Meyer, Gerd (2014). Polyoxotungstates in Molecular Boxes of Purine Bases. Crystals, 4 (1). S. 64 - 74. BASEL: MDPI. ISSN 2073-4352

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Abstract

Three new compounds, (GuaH)(4)[W10O32](H2O)(4) (1), (ThbH)(3)(H3O)[(W10O32](H2O)(7.5) (2) and (ThbH)(2)[W6O19](H2O)(2) (3) (GuaH = guaninium, thbH = theobrominium) were synthesized in acidified acetonitrile solutions. The polyoxotungstates in all of these compounds are surrounded by an organic matrix consisting of protonated purine bases and water molecules. The distinctive structural arrangement of the aromatic organic cations around the polyoxoanions parallel to their faces is reminiscent of nanosized boxes. The results of IR spectroscopy are consistent with previously reported results for polyoxotungstates and neat organic compounds. The polyoxoanions are reduced to tungsten(IV) oxide upon heating over 400 degrees C in an intramolecular redox reaction.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kulikov, Vladislav UNSPECIFIED UNSPECIFIED UNSPECIFIED Meyer, Gerd UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-445219
DOI:	10.3390/cryst4010064
Journal or Publication Title:	Crystals
Volume:	4
Number:	1
Page Range:	S. 64 - 74
Date:	2014
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2073-4352
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CRYSTAL-STRUCTURE; HYDROGEN; COMPLEX; ISOPOLYOXOTUNGSTATE; EVOLUTION; DFT Multiple languages Crystallography; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/44521