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Sintese en karakterisering van nuwe langketting-bimetaal-tetrakarboksielaatkomplekse
Authors: Ebraheim Botha1, Elizabeth Erasmus1
Affiliations: 1Department of Chemistry, University of the Free State, South Africa
Correspondence to: Ebraheim Botha
Postal address: PO Box 339, Bloemfontein 9300, South Africa
How to cite this abstract: Botha, E. & Erasmus, E., 2014, ‘Sintese en karakterisering van nuwe langketting-bimetaal-etrakarboksielaatkomplekse’, Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 33(1), Art. #1045, 1 page.
http://dx.doi.org/10.4102/satnt.v33i1.1045
Note: A selection of conference proceedings: Student Symposium in Science,
27 and 28 October 2012, North- West University, South Africa. Organising committee: Mr Rudi W. Pretorius (Department of Geography, University of South Africa), Dr Ettienne Snyders (South African Nuclear Energy Corporation [NECSA]) and Dr Cornie G.C.E. van Sittert (School of Physical and Chemical Sciences, North- West University).
Copyright Notice: © 2014. The Authors. Licensee: AOSIS OpenJournals. This is an Open Access article distributed under the terms of the
Creative Commons Attribution License, which permits unrestricted use, distribution,
and reproduction in any medium, provided the original work is properly cited.
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Open Access
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Abstract
Synthesis and characterisation of new long alkyl chain bimetallic bridging tetra-carboxylate complexes. Palladium-based heterometallic complexes are important because of their interesting physical properties and excellent catalytic activity. In this study, four monometallic trinuclear palladium long chain carboxylates and four palladium-based bimetallic bridging tetracarboxylate complexes were synthesised. These complexes were characterised by different techniques, including DSC, TGA-MS, X-Ray diffraction and IR spectroscopy.
Inhoud
Die interessante fisiese eienskappe en uitstaande katalitiese aktiwiteit van palladium-
bevattende heterometaalkomplekse is belangrik vir beide industrie en akademie (Sinfelt 1983).Pd-Co is ’n voorbeeld van ’n bimetaalkatalisator wat gebruik kan word vir alkeenhidro-formulering en brandstofselle (Zamaraev 1997; Fernandez et al. 2005). Die tri-gebrugde bimetaalkompleks, Pd(OOCCH3)3(OOCCH3)Co(Phen), kan as enkele uitgangstof tydens katalisatorsintese gebruik word (Nefedov et al. 2006; Abdelsayed et al. 2009; Somorjai & Kliewer 2009). Die gebruik van so ’n enkelbronreagens kan die aparte agglomerasie van metale en allooivorming beperk om sodoende die eweredige verspreiding van beide metale te bevorder (Borgna et al. 2004). Terwyl enkelmetaal-karboksilaatverbindings welbekend is (Deacon & Phillips 1980; Aquino 2004), is multimetaal-karboksilate relatief onbekend (Kozitsyna et al. 2006; Akhmadullina et al. 2009). Sover ons kennis strek, bestaan daar geen literatuur ten opsigte van langketting-multimetaal-karboksilate nie. Tydens hierdie studie is vier enkelmetaal- tri-kern- sikliese palladiumkarboksilate met langketting-substituente en vier palladiumbevattende bimetaal-gebrugde langketting-tetrakarboksilaatkomplekse gesintetiseer. Hierdie komplekse is met verskillende tegnieke gekarakteriseer: DSC (differensiële skandeerkalorimetrie), TGA-MS (termiese gravimetriese analise – massaspektroskopie), X-Straaldiffraksie en IR (infrarooi) spektroskopie. Die gesintetiseerde komplekse kan toepassing vind in vloeikristalvertoonskerms, elektrochemie en tot ’n groter mate in heterogene katalise.
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