Structure of Proton-Conducting Alkali Thio-Hydroxogermanates
(2008) In Chemistry of Materials 20(19). p.6014-6021- Abstract
- Using it combination Of neutron diffraction, infrared spectroscopy. and first-principles calculations, we have investigated the structure of hydrated and dehydrated proton conducting alkali thio-hydroxogermanates of general formula M2GeS2(OH)(2)center dot yH(2)O (M = K, Rb, and Cs). The results show that the structure of hydrated and dry materials are basically the same, which confirms previous indications that the main effect of heating these materials is just a loss of water. We suggest that in the hydrated state the structure of these materials is built of dimers of thio-hydroxogermanate anions, with the water molecules acting, as bridges between such dimers. In the dehydrated structure,. file thio-hydroxogermanate anions instead form... (More)
- Using it combination Of neutron diffraction, infrared spectroscopy. and first-principles calculations, we have investigated the structure of hydrated and dehydrated proton conducting alkali thio-hydroxogermanates of general formula M2GeS2(OH)(2)center dot yH(2)O (M = K, Rb, and Cs). The results show that the structure of hydrated and dry materials are basically the same, which confirms previous indications that the main effect of heating these materials is just a loss of water. We suggest that in the hydrated state the structure of these materials is built of dimers of thio-hydroxogermanate anions, with the water molecules acting, as bridges between such dimers. In the dehydrated structure,. file thio-hydroxogermanate anions instead form an extended network- through the formation of interdimer hydrogen bonds through the -OH groups in the structure. The alkali ions are suggested to act as "space-fillers" in voids formed by the thio-hydroxogermanate anion dimers. in both the hydrated and the dehydrated state. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1285831
- author
- Karlsson, Maths LU ; Matic, Aleksandar ; Panas, Itai ; Bowron, Daniel T. ; Martin, Steve W. ; Nelson, Carly R. ; Martindale, Chad A. ; Hall, Andreas and Borjesson, Lars
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Chemistry of Materials
- volume
- 20
- issue
- 19
- pages
- 6014 - 6021
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000259871500012
- scopus:54849409182
- ISSN
- 0897-4756
- DOI
- 10.1021/cm8006155
- language
- English
- LU publication?
- yes
- id
- 4c482dfb-0ee6-4d4f-b3ea-3b7fbb4eb773 (old id 1285831)
- date added to LUP
- 2016-04-01 11:49:00
- date last changed
- 2022-01-26 18:41:16
@article{4c482dfb-0ee6-4d4f-b3ea-3b7fbb4eb773, abstract = {{Using it combination Of neutron diffraction, infrared spectroscopy. and first-principles calculations, we have investigated the structure of hydrated and dehydrated proton conducting alkali thio-hydroxogermanates of general formula M2GeS2(OH)(2)center dot yH(2)O (M = K, Rb, and Cs). The results show that the structure of hydrated and dry materials are basically the same, which confirms previous indications that the main effect of heating these materials is just a loss of water. We suggest that in the hydrated state the structure of these materials is built of dimers of thio-hydroxogermanate anions, with the water molecules acting, as bridges between such dimers. In the dehydrated structure,. file thio-hydroxogermanate anions instead form an extended network- through the formation of interdimer hydrogen bonds through the -OH groups in the structure. The alkali ions are suggested to act as "space-fillers" in voids formed by the thio-hydroxogermanate anion dimers. in both the hydrated and the dehydrated state.}}, author = {{Karlsson, Maths and Matic, Aleksandar and Panas, Itai and Bowron, Daniel T. and Martin, Steve W. and Nelson, Carly R. and Martindale, Chad A. and Hall, Andreas and Borjesson, Lars}}, issn = {{0897-4756}}, language = {{eng}}, number = {{19}}, pages = {{6014--6021}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Chemistry of Materials}}, title = {{Structure of Proton-Conducting Alkali Thio-Hydroxogermanates}}, url = {{http://dx.doi.org/10.1021/cm8006155}}, doi = {{10.1021/cm8006155}}, volume = {{20}}, year = {{2008}}, }