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Aulsebrook ML, Graham B, Grace MR, Tuck KL. Lanthanide complexes for luminescence-based sensing of low molecular weight analytes. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.11.018] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Abstract
Abstract
Acetylacetone (2,4-pentanedione) derivatives with N donor substituents represent ditopic ligands with coordination sites of distinctly different Pearson hardness. Deprotonation of the acetylacetone (Hacac) moiety leads to O,O′ chelating monoanionic (acac) ligands suitable for coordination to hard cations. The softer N donor site(s) preferably act as nucleophiles towards softer partners. When the organic molecules are employed as linkers and coordinate via either site, they are often selective and allow to synthesize well-ordered heterometallic solids. This review addresses the derivatives of 17 pentanediones with nitrile, pyridyl and pyrazolyl moieties as N donor substituents, with an emphasis on structurally characterized compounds. Depending on the N donor substituents and the cations, O,O′ or N coordination will dominate. The nitrile-substituted compounds essentially behave as acetylacetones; they may easily O,O′ coordinate to a wide range of cations whereas N coordination is limited to AgI, CuI or, in the case of less soft cations, to longer and presumably weaker contacts, e.g. to the more distant sites in Jahn–Teller distorted CuII. In contrast, pyridyl-substituted pentanediones act as N donor ligands, regardless whether their (H)acac site is chelating a cation or not. The still scarcely explored pyrazolyl derivative shows the most complex coordination pattern: it may be deprotonated both at the acetylacetone and the pyrazol site, the latter affording N,N′ bridging ligands. In addition to N donor nucleophilicity, the distance between the alternative coordination sites and their mutual orientation are relevant for crystal engineering applications.
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Affiliation(s)
- Marius Kremer
- Institut für Anorganische Chemie, RWTH Aachen University , Landoltweg 1 , 52074 Aachen , Germany
| | - Ulli Englert
- Institut für Anorganische Chemie, RWTH Aachen University , Landoltweg 1 , 52074 Aachen , Germany
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Galán LA, Reid BL, Stagni S, Sobolev AN, Skelton BW, Cocchi M, Malicka JM, Zysman-Colman E, Moore EG, Ogden MI, Massi M. Visible and Near-Infrared Emission from Lanthanoid β-Triketonate Assemblies Incorporating Cesium Cations. Inorg Chem 2017; 56:8975-8985. [DOI: 10.1021/acs.inorgchem.7b00928] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Laura Abad Galán
- Department of Chemistry
and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, Western Australia, Australia
| | - Brodie L. Reid
- Department of Chemistry
and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, Western Australia, Australia
| | - Stefano Stagni
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, viale del Risorgimento 4, Bologna 40136, Italy
| | - Alexandre N. Sobolev
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia
| | - Brian W. Skelton
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia
| | - Massimo Cocchi
- Institute for Organic Synthesis and Photoreactivity
(ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti
101, 40129 Bologna, Italy
| | - Joanna M. Malicka
- Institute for Organic Synthesis and Photoreactivity
(ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti
101, 40129 Bologna, Italy
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM
School of Chemistry, University of St. Andrews, St. Andrews, Fife KY16
9ST, United Kingdom
| | - Evan G. Moore
- School of Chemistry and
Molecular Biosciences, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Mark I. Ogden
- Department of Chemistry
and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, Western Australia, Australia
| | - Massimiliano Massi
- Department of Chemistry
and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, Western Australia, Australia
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Wentrup C. RACI Congress Adelaide. Aust J Chem 2015. [DOI: 10.1071/ch15508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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