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Sr2Cu2TeO6Br2: Honeycomb layers of Cu(II) ions
Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry.
2006 In: Acta Cryst., Vol. C, no 62, i38-i40 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2006. Vol. C, no 62, i38-i40 p.
Identifiers
URN: urn:nbn:se:su:diva-24635OAI: oai:DiVA.org:su-24635DiVA: diva2:197978
Note
Part of urn:nbn:se:su:diva-7284Available from: 2008-01-08 Created: 2008-01-08Bibliographically approved
In thesis
1. A new synthetic strategy for low-dimensional compounds: Lone pair cations and alkaline earth spacers
Open this publication in new window or tab >>A new synthetic strategy for low-dimensional compounds: Lone pair cations and alkaline earth spacers
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Complex transition metals oxyhalides containing a lone pair element, such as tellurium (IV), form an attractive research field because there is a high probability of finding new low-dimensionally arranged compounds and, particularly, a low-dimensionally arranged transition metals substructures, leading to interesting physical properties. Tellurium (IV) can drive the formation of many unusual structures because of its stereochemically active lone pair electrons, E. It commonly takes a coordination of three or four oxygen atoms to form either a TeO3E square pyramid or a TeO3+1E trigonal bipyramid. These lone pairs are very important players involved in lowering the dimensionality of crystal structures. Previous studies in transition metal tellurium (IV) oxohalide quarternary systems revealed a family of compounds, many of which exhibit interesting properties e.g. magnetic frustration. The unique point of this thesis is to employ alkaline earth elements (AE) to augment this ability of lone pair elements to lower the dimensionality of the transition metal arrangements. By this double usage of “chemical scissors” (a lone pair element used in conjunction with alkaline earth elements) we obtained new types of low-dimensionally arranged compounds.

This thesis is focused on the syntheses and characterization of a series of compounds in the pentanary (five components) system AE-TeIV-TM-O-X (AE=alkaline earth metal, TM=transition metal and X=halogen), in which nine new compounds were found. The crystal structures of each of these compounds were determined by the single crystal X-ray diffraction data.

Place, publisher, year, edition, pages
Stockholm: Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi, 2008. 58 p.
Keyword
Alkaline earth, Lone pair elements, Low-dimensional compounds
National Category
Inorganic Chemistry
Research subject
Inorganic Chemistry
Identifiers
urn:nbn:se:su:diva-7284 (URN)978-91-7155-538-0 (ISBN)
Public defence
2008-01-28, Magnélisalen, Kemiska övningslaboratoriet, Svante Arrhenius väg 12 A, Stockholm, 13:00
Opponent
Supervisors
Available from: 2008-01-08 Created: 2008-01-08Bibliographically approved

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