Three low dimensional open germanates based on the 4(4) net
2012 (English)In: CrysteEngComm, ISSN 1466-8033, Vol. 14, no 17, 5465-5471 p.Article in journal (Refereed) Published
Three novel low-dimensional open-germanates, denoted as SU-71, SU-72 and SU-73, were synthesized by solvothermal methods and their structures were determined by single crystal X-ray diffraction. The structures of SU-71, SU-72 and SU-73 are all built from Ge7X19 (X = O, OH or F) clusters that are connected according to the topologies related to the 4(4) net. SU-71 has a layered structure following the 4(4) net, SU-72 contains 2D slabs with unprecedented crescent-shaped 23-ring channels and SU-73 consists of zero-dimensional (0D) open nanoballs. SU-71 and SU-72 were both synthesized using 1-(2-aminoethyl)piperazine (AEP) as the organic structure directing agent, while pentaethylenehexamine (PEHA) was used for the synthesis of SU-73. All three phases form in the presence of HF, which promotes the formation of the Ge7X19 cluster. A comparison of the related structures reveals a relationship between the orientation of the Ge7X19 building units and the curvature of the 4(4) net layer.
Place, publisher, year, edition, pages
2012. Vol. 14, no 17, 5465-5471 p.
IdentifiersURN: urn:nbn:se:su:diva-81307DOI: 10.1039/c2ce25665gISI: 000306972100017OAI: oai:DiVA.org:su-81307DiVA: diva2:560783