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Two Open-Framework Germanates with Nickel Complexes Incorporated into the Framework
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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2011 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 50, no 20, 9921-9923 p.Article in journal (Refereed) Published
Abstract [en]

Two open-framework germanates, SUT-1 and SUT-2, have been synthesized under hydrothermal conditions using ethylenecliamine (en, H(2)NCH(2)CH(2)NH(2)) as templates and Ni(NO(3))(2)center dot 6H(2)O as the transition-metal source. Their frameworks are built with Gel() clusters and [Ni(en)(2)](2+) complexes. In both structures, Gel clusters form square nets in the a-c plane, while the [Ni(en)2]2+ complexes bridge the square nets via Ni-O-Ge bonds to form 3D networks. They present the first examples to incorporate Ni(2+) complexes into the germanate frameworks. In SUT-2, additional linkages by Ge(2)O(7) clusters between the square nets generate a new type of topology.

Place, publisher, year, edition, pages
2011. Vol. 50, no 20, 9921-9923 p.
National Category
Inorganic Chemistry
Research subject
Structural Chemistry
Identifiers
URN: urn:nbn:se:su:diva-69907DOI: 10.1021/ic2013478ISI: 000295602500019OAI: oai:DiVA.org:su-69907DiVA: diva2:479668
Funder
Swedish Research Council
Note
7Available from: 2012-01-18 Created: 2012-01-15 Last updated: 2017-12-08Bibliographically approved
In thesis
1. Open-Framework Germanates and Nickel Germanates: Synthesis and Characterization
Open this publication in new window or tab >>Open-Framework Germanates and Nickel Germanates: Synthesis and Characterization
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Microporous materials have a wide range of important applications in separation, gas adsorption, ion-exchange and catalysis. Open-framework germanates are a family of microporous compounds and are of particular interest. This thesis focuses on the synthesis and characterization of new open-framework germanates as well as introducing the transition-metal nickel into germanate structures.

One new microporous germanosilicate, SU-78 and four new open-framework germanates, SU-74, SU-75, SU-69 and SU-76 have been obtained by using organic molecules as structure directing agents (SDAs). The incorporation of nickel and organic SDAs in the synthesis resulted in five novel nickel germanates, SUT-1, SUT-2, SUT-3, SUT-4 and SUT-5, in which nickel complexes act either as framework-forming components or as structure directing agents.

The general synthesis route is described and the variables that affect the synthesis products are summarized. Different techniques applied on the characterization of chemical and physical properties of the products are also introduced.

Place, publisher, year, edition, pages
Stockholm: Department of Materials and Environmental Chemistry (MMK), Stockholm University, 2012. 81 p.
Keyword
open-framework, zeolites, germanates, nickel germanates, structure directing agent, nickel complexes, crystal structure determination, hydrothermal synthesis
National Category
Inorganic Chemistry
Research subject
Structural Chemistry
Identifiers
urn:nbn:se:su:diva-75495 (URN)978-91-7447-489-3 (ISBN)
Public defence
2012-05-30, Magnélisalen, Kemiska övningslaboratoriet, Svante Arrhenius väg 16 B, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 1: Submitted. Paper 2: Submitted. Paper 3: Submitted. Paper 5: Manuscript.

Available from: 2012-05-08 Created: 2012-04-20 Last updated: 2012-10-25Bibliographically approved

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