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Ruthenium cryptates with an unusual selectivity for nitrate

Ruthenium cryptates with an unusual selectivity for nitrate
Ruthenium cryptates with an unusual selectivity for nitrate
The synthesis of two new tripodal complexes [Ru(L-3)](PF6)(2) and [Ru(L-4)](PF6)(2), encapsulating a ruthenium(II) cation, has been successfully achieved and the products fully characterized, including by X-ray structural determination. The smaller cavity, built around a tris(2-aminoethyl) amido scaffold demonstrated only moderate and predictable interactions with a range of anions and no significant spectroscopic change with nitrate, chloride and bromide, although dihydrogen phosphate did result in an almost stoichiometric precipitation. The expansion of the cavity to include the more rigid 1,3,5-benzenetricarbonylamide group creates a larger cavity, which shows a decrease in the emission on the introduction of chloride, bromide, hydrogen sulfate and nitrate salts, with the H-1 NMR titrations giving a surprisingly high binding affinity for nitrate over the smaller and simpler halides.
0300-9246
7005-7012
Baker, Naomi C.A.
d3eb6379-b1e0-46cc-96b8-367de70e92e6
Fletcher, Nicholas C.
fe36f071-13ac-44e2-9d60-0f75bb284a21
Horton, Peter N.
154c8930-bfc3-495b-ad4a-8a278d5da3a5
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Baker, Naomi C.A.
d3eb6379-b1e0-46cc-96b8-367de70e92e6
Fletcher, Nicholas C.
fe36f071-13ac-44e2-9d60-0f75bb284a21
Horton, Peter N.
154c8930-bfc3-495b-ad4a-8a278d5da3a5
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da

Baker, Naomi C.A., Fletcher, Nicholas C., Horton, Peter N. and Hursthouse, Michael B. (2012) Ruthenium cryptates with an unusual selectivity for nitrate. Dalton Transactions, 41 (23), 7005-7012. (doi:10.1039/c2dt12446g).

Record type: Article

Abstract

The synthesis of two new tripodal complexes [Ru(L-3)](PF6)(2) and [Ru(L-4)](PF6)(2), encapsulating a ruthenium(II) cation, has been successfully achieved and the products fully characterized, including by X-ray structural determination. The smaller cavity, built around a tris(2-aminoethyl) amido scaffold demonstrated only moderate and predictable interactions with a range of anions and no significant spectroscopic change with nitrate, chloride and bromide, although dihydrogen phosphate did result in an almost stoichiometric precipitation. The expansion of the cavity to include the more rigid 1,3,5-benzenetricarbonylamide group creates a larger cavity, which shows a decrease in the emission on the introduction of chloride, bromide, hydrogen sulfate and nitrate salts, with the H-1 NMR titrations giving a surprisingly high binding affinity for nitrate over the smaller and simpler halides.

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More information

e-pub ahead of print date: 4 April 2012
Published date: 2012
Organisations: Organic Chemistry: Synthesis, Catalysis and Flow

Identifiers

Local EPrints ID: 347319
URI: https://eprints.soton.ac.uk/id/eprint/347319
ISSN: 0300-9246
PURE UUID: dd93eea2-64e5-42bb-91ac-1a2fa8f24a0d
ORCID for Peter N. Horton: ORCID iD orcid.org/0000-0001-8886-2016

Catalogue record

Date deposited: 21 Jan 2013 11:05
Last modified: 06 Jun 2018 12:52

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