Self-assembly and structural transformations of high-nuclearity palladium-rich polyoxometalates

Cameron, J. M., Gao, J., Long, D. L. and Cronin, L. (2014) Self-assembly and structural transformations of high-nuclearity palladium-rich polyoxometalates. Inorganic Chemistry Frontiers, 1(2), pp. 178-185. (doi:10.1039/c3qi00075c)

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Abstract

A one-pot strategy exploiting the structure directing effects of SeIV and TeIV heteroatoms has yielded the highest nuclearity noble metal containing polyoxometalates to date; including the palladium-rich selenotungstate isomers K28[H12Pd10Se10W52O206]·65H2O (1) and K26[H14Pd10Se10W52O206]·68H2O (2), and the nanoscale tellurotungstate cluster Na40[Pd6Te19W42O190]·76H2O (3). These reaction systems exhibit remarkable structural flexibility and point to a new route towards the synthesis of complex heterometallic species, in which multiple lacunary polyoxometalate ‘building blocks’ have been assembled to trap a transient oxopalladate species suspected to play a role in the assembly of several common polyoxopalladates. Mass spectrometry has been applied to explore and compare the solution stability of compounds 1–3, demonstrating the markedly different properties of the SeIV and TeIV templated systems. Electrochemical analysis of 1 has been provided and is dominated by Pd redox processes, with reduction of the cluster resulting in electrodeposition of Pd metal and observation of the subsequent formation of PdO species, concurrent with previously reported oxopalladate containing species.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cameron, Mr Jamie and Gao, Miss Jing and Long, Dr Deliang and Cronin, Professor Lee
Authors: Cameron, J. M., Gao, J., Long, D. L., and Cronin, L.
Subjects:Q Science > QD Chemistry
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Inorganic Chemistry Frontiers
Publisher:R S C Publications
ISSN:2052-1553
ISSN (Online):2052-1553
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in Inorganic Chemistry Frontiers 1(2):178-185
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
503291Molecular-Metal-Oxide-nanoelectronicS (M-MOS): Achieving the Molecular LimitLeroy CroninEngineering & Physical Sciences Research Council (EPSRC)EP/H024107/1CHEM - CHEMISTRY
503295Molecular-Metal-Oxide-nanoelectronicS (M-MOS): Achieving the Molecular LimitLeroy CroninEngineering & Physical Sciences Research Council (EPSRC)EP/H024107/1CHEM - CHEMISTRY
562821Innovative Manufacturing Research Centre for Continuous Manufacturing and Crystallisation (CMAC)Leroy CroninEngineering & Physical Sciences Research Council (EPSRC)EP/I033459/1CHEM - CHEMISTRY
577391Programmable Molecular Metal Oxides (PMMOs) - From Fundamentals to ApplicationLeroy CroninEngineering & Physical Sciences Research Council (EPSRC)EP/J015156/1CHEM - CHEMISTRY