Srinivasan, Bikshandarkoil R, Morajkar, Sudesh M, Khandolkar, Savita S, Näther, Christian and Bensch, Wolfgang (2017) Synthesis, structure and properties of a hexarubidium heptamolybdate with bridging aqua ligands. NISCAIR Online Periodicals Repository, 56A(06) (7). pp. 601-609.

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Abstract

The synthesis, single crystal structure, spectral, thermal and electrical properties of a hexarubidium heptamolybdate [Rb6(H2O)4(Mo7O24)] 1 is reported. The bridging binding modes of the unique (Mo7O24)6- ion and the four crystallographically independent coordinated water molecules results in coordination numbers ranging from 8 to 10 for the six unique Rb(I) ions in 1. Thermal decomposition of 1 results in the formation of an anhydrous residue of composition 7MoO3·3Rb2O. The cyclic voltammogram of an aqueous solution of 1 exhibits a single redox event characteristic of (Mo7O24)6- anion. Solution conductivity studies reveal the presence of hydrated Rb+ cations and uncoordinated (Mo7O24)6- anions. A comparative study of several alkali-metal heptamolybdates reveals a rich structural chemistry in terms of the binding modes of the (Mo7O24)6- anion.

Document Type:	Article
Keywords:	Coordination chemistry;Hexarubidium heptamolybdate;Rubidium;Molybdenum;Bridging ligands
Research affiliation:	Kiel University > Kiel Marine Science OceanRep > The Future Ocean - Cluster of Excellence Kiel University
Refereed:	Yes
Open Access Journal?:	Yes
Publisher:	NISCAIR-CSIR, India
Projects:	Future Ocean
Date Deposited:	16 Jan 2018 15:39
Last Modified:	06 Aug 2019 10:46
URI:	https://oceanrep.geomar.de/id/eprint/41506

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