Structural elucidation of homometallic anthracenolates synthesised via deprotonative metallation of anthrone
Open accessAbstract
Five novel neutral homometallic complexes which contain the anthracen-9-olate anion have been prepared and characterised by treating anthrone with an organometallic base to induce aromatisation. Three of these complexes [(donor)·M(OC(14)H(9))](2) (2-4) are dimeric and contain sodium, lithium and potassium respectively. For 2 and 3 the donor is N,N,N',N'-tetramethylethylenediamine (TMEDA) whilst for 4 it is N,N,N',N'',N''-pentamethyldiethylenetriamine (PMDETA). When bimetallic reagents such as [(TMEDA)·Na(μ-(t)Bu)(μ-TMP)Zn((t)Bu)] are employed, only the alkali-metal-containing species is isolated (e.g., 2 in this case). Providing a contrast, complexes 5 [(TMEDA)·Mg(OC(14)H(9))(n)Bu] and 6 [(TMEDA)·Zn(OC(14)H(9))Et] are monomeric. The alkali metal complexes were prepared by reacting anthrone with one molar equivalent of either n-butylsodium, n-butyllithium or (trimethylsilyl)methylpotassium in the presence of the required donor solvent. For 5 and 6, equimolar quantities of di-n-butylmagnesium and diethylzinc, respectively, were reacted with anthrone in the presence of TMEDA. The solid-state structures and the arene solution structures of 2-6 have been determined by X-ray crystallography and NMR spectroscopy respectively.
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SPEs consist primarily of relatively low energy protons, with a minor contribution of electrons, alpha particles and heavier particles of high charge and energy (HZE particles).
“SPEs consist primarily of relatively low energy protons, with a minor contribution of electrons, alpha particles and heavier particles of high charge and energy, known as HZE particles [28].”
From Hindlimb suspension and spe-like radiation impairs clearance of bacterial infections (2014) · cites this paper as [28]
Exposure to SPE radiation results in an inhomogeneous dose distribution, with high skin doses and lower internal organ doses, since the majority of the protons in SPEs have kinetic energies of 100 MeV or less, which have limited penetrating abilities.
“Exposure to SPE radiation results in an inhomogeneous dose distribution, with high skin doses and lower internal organ doses, since the majority of the protons in SPEs have kinetic energies of 100 MeV or less, which have limited penetrating abilities [28].”
From Hindlimb suspension and spe-like radiation impairs clearance of bacterial infections (2014) · cites this paper as [28]
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- Authors
- Clegg, W., Fleming, B. J., García-Álvarez, P., Hogg, L. M., Kennedy, A. R., Klett, J., Martínez-Martínez, A. J., Mulvey, R. E., Russo, L., & O'Hara, C. T.
- Affiliations
- Newcastle University (GB)
- University of Strathclyde (GB)
- Venue
- Dalton Trans.
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2013
- Volume
- 42
- Issue
- 7
- Pages
- 2512-2519
- ISSN
- 1477-9226 (ISSN-L)
- 1477-9234
- OpenAlex
- W2099586604
- Cited by
- 3
- References
- 42
- Citations by year
- 2017: 1 · 2014: 2
- FWCI
- 0.29
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Licence
- cc-by-nc-nd
- Locations
- Dalton Transactions (publishedVersion)
- PubMed (publishedVersion)
- Consultation of the Doctoral Thesis Database (TESEO) (Ministerio de Educación, Cultura y Deporte) (submittedVersion, cc-by-nc-nd)
- Newcastle University ePrints (Newcastle Univesity)
- Funders
- European Commission
- Ministerio de Ciencia e Innovación
- Engineering and Physical Sciences Research Council (EP/J001872/1, EP/L001497/1)
- Erasmus+
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Coordination Chemistry and Organometallics
- Physical Sciences › Chemistry › Inorganic Chemistry › Synthesis and characterization of novel inorganic/organometallic compounds
- Physical Sciences › Chemistry › Organic Chemistry › Inorganic and Organometallic Chemistry
- Keywords
- homometallic complexes, anthrone, aromatization, alkali metal complexes, sodium complexes, lithium complexes, potassium complexes, magnesium complexes, zinc complexes, TMEDA, PMDETA, dimeric complexes, solid-state structure, solution structure
- MeSH terms
- Anthrones, Anthracenes, Models, Molecular, Magnetic Resonance Spectroscopy, Organometallic Compounds, Protons, Zinc, Molecular Structure, Crystallography, X-Ray
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