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    • Several versions

    Energy dependence of the freeze-out eccentricity from the azimuthal dependence of hbt at star

    Anson, Christopher
    Journal of Physics G: Nuclear and Particle Physics, 2011, Vol.38(12), p.124148 (4pp) [Peer Reviewed Journal]

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    Spectroscopic, structural and DFT study of the responses of carbonylmetal crown ether complexes to alkali metal cations

    Stephenson, G. Richard
    Anson, Christopher E, Creaser, Colin S, Daul, Claude A
    European Journal of Inorganic Chemistry. - 2011///2086–2097
    2011-04-20
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    Title: Spectroscopic, structural and DFT study of the responses of carbonylmetal crown ether complexes to alkali metal cations
    Author: Stephenson, G. Richard
    Contributor: Anson, Christopher E; Creaser, Colin S; Daul, Claude A
    Date: 2011-04-20
    Description: FTIR spectra of tricarbonyl(η⁶-benzo-15-crown-5)chromium(0) (1) in the presence of lithium, sodium and potassium perchlorate salts in methanol show different responses in the Cr–CO vibrational region of the spectrum. Data from the symmetric (νsym) and antisymmetric (νasym) Cr–CO vibrational stretching modes have been analysed by principal component analysis (PCA) to generate a factor score plot that provides a visual representation of these differential responses. X-ray crystallographic data for the sodium perchlorate complex 1·Na⁺ and dimensions from DFT-derived structures of 1·Li⁺, 1·Na⁺ and 1·K⁺ indicate that binding M⁺ in the crown causes electron density and structural changes in the [O(4)–C(9)–C(4)–O(8)]Cr–C(1)=O(1) sections of 1, which vary depending on the nature of the cation. This suggests a mode of action in which Li⁺ associates with a more compact O(4)–C(9)–C(4)–O(8), while Na⁺ and K⁺ differ crucially in the extent of σ and π contributions to their effect on νsym and νasym. A comparison of the FTIR data from 1, tricarbonyl(η⁶-1-phenyl-1-aza-15-crown-5)chromium(0) (2) and tricarbonyl(η⁶-2-phenyl-15-crown-5)chromium(0) (3) with a wider range of cations (NH₄⁺, Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺, Mg²⁺, Ba²⁺) and anions (AcO⁻, BPh₄⁻, Br⁻, C1O₄⁻, I⁻, SCN⁻), showed that 1 and 3 both responded significantly to the different metal cations, but 2 did not. The relative cation differentiation of 1, 2 and 3 was measured using the parameter ΔR(cation), and ratios of ΔN(cation) values [calculated from ΔR(cation)] distinguished different effects in the FTIR spectra of 1 and 3 for different pairs of cations.
    Linked entry: European Journal of Inorganic Chemistry. - 2011///2086–2097
    Host document: European Journal of Inorganic Chemistry
    Identifier: 10.1002/ejic.201001274 (DOI)

    • Several versions

    Synthesis and Supramolecular Structure of a (5-(3-(1-tetrazol-5-yl)phenyl)-1-tetrazole) Cobalt Complex

    Kostakis, George E, Anson, Christopher E, Powell, Annie K
    Bioinorganic Chemistry and Applications, 2010, Vol.2010, 5 pages [Peer Reviewed Journal]

    • Several versions

    Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer

    Peng, Yan, Mereacre, Valeriu, Anson, Christopher, Powell, Annie
    Inorganics, 2016, Vol.4(1), p.2 [Peer Reviewed Journal]

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    Energy dependent Hanbury Brown - Twiss interferometry and the freeze-out eccentricity of heavy ion collisions at STAR

    Anson, Christopher Daniel
    Electronic Theses and Dissertations (OhioLINK)
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    Title: Energy dependent Hanbury Brown - Twiss interferometry and the freeze-out eccentricity of heavy ion collisions at STAR
    Author: Anson, Christopher Daniel
    Publisher: The Ohio State University / OhioLINK
    Date: 21 May 2014
    Subject: Nuclear Physics ; Hbt ; Femtoscopy ; Beam Energy Scan ; Rhic ; Star

    • Several versions

    Synthesis and Characterization of a Heterometallic Extended Architecture Based on a Manganese(II)-Substituted Sandwich-Type Polyoxotungstate

    Ibrahim, Masooma, Moreno-Pineda, Eufemio, Bergfeldt, Thomas, Anson, Christopher E, Powell, Annie K
    Materials (Basel, Switzerland), 17 January 2018, Vol.11(1) [Peer Reviewed Journal]

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    Engineering of ferrimagnetic Cu12-cluster arrays through supramolecular interactions

    Murugesu, Muralee, Anson, Christopher E, Powell, Annie K
    Chemical communications (Cambridge, England), 21 May 2002(10), pp.1054-5 [Peer Reviewed Journal]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Title: Engineering of ferrimagnetic Cu12-cluster arrays through supramolecular interactions
    Author: Murugesu, Muralee; Anson, Christopher E; Powell, Annie K
    Description: Ferrimagnetic oxo-bridged Cu12 aggregates can be organised into a variety of arrays by utilising structure-directing effects of counter ions, solvent molecules and linker units.
    Is part of: Chemical communications (Cambridge, England), 21 May 2002(10), pp.1054-5
    Identifier: 1359-7345 (ISSN); 12122661 Version (PMID)

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    Direct observation of the role of lanthanides in stabilizing a ferromagnetic spin orientation in a weak Fe(III)-Fe(III) antiferromagnet

    Xiang, Hua, Mereacre, Valeriu, Lan, Yanhua, Lu, Tong-Bu, Anson, Christopher E, Powell, Annie K
    Chemical communications (Cambridge, England), 28 August 2013, Vol.49(67), pp.7385-7 [Peer Reviewed Journal]
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    Title: Direct observation of the role of lanthanides in stabilizing a ferromagnetic spin orientation in a weak Fe(III)-Fe(III) antiferromagnet
    Author: Xiang, Hua; Mereacre, Valeriu; Lan, Yanhua; Lu, Tong-Bu; Anson, Christopher E; Powell, Annie K
    Subject: Magnetic Fields ; Orientation ; Antiferromagnetism ; Modulation ; Ferromagnetism ; Dysprosium ; Spectra ; Iron ; Miscellaneous Sciences (So) ; Components and Materials (General) (Ea);
    Description: [Fe(III)2Ln(III)2(OH)2(L(1))2(HL(2))2(NO3)4(H2O)1½(MeOH)½]·6MeCN (Ln = Y (1), Dy (2); H2L(1) = 2,3-dihydroxybenzaldehyde and H2L(2) is the Schiff base of this aldehyde with furfurylamine) have unusually weak antiferromagnetic interactions between the Fe(III) centres in comparison with other (μ-dihydroxo)diiron(III) complexes. For 1, it was established that modulation of the hydroxo bridges by coordination to the Y(III) ions results in long Fe-O bonds and small Fe-O-Fe angles, leading to J = -0.4 cm(-1). Analysis of the Mössbauer spectra reveals that the intramolecular magnetic field generated by the anisotropic Dy(III) ions in 2 is sufficient to overcome the Fe-Fe antiferromagnetic coupling and reorientate the Fe(III) moments into a ferromagnetic spin orientation.
    Is part of: Chemical communications (Cambridge, England), 28 August 2013, Vol.49(67), pp.7385-7
    Identifier: 1364-548X (E-ISSN); 23703636 Version (PMID); 10.1039/c3cc42416b (DOI)

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    An octanuclear {Cu(II)4Dy(III)4} coordination cluster showing single molecule magnet behaviour from field accessible states

    Kühne, Irina A, Magnani, Nicola, Mereacre, Valeriu, Wernsdorfer, Wolfgang, Anson, Christopher E, Powell, Annie K
    Chemical communications (Cambridge, England), 21 February 2014, Vol.50(15), pp.1882-5 [Peer Reviewed Journal]
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    Title: An octanuclear {Cu(II)4Dy(III)4} coordination cluster showing single molecule magnet behaviour from field accessible states
    Author: Kühne, Irina A; Magnani, Nicola; Mereacre, Valeriu; Wernsdorfer, Wolfgang; Anson, Christopher E; Powell, Annie K
    Subject: Accessibility ; Miscellaneous Sciences (So) ; Components and Materials (General) (Ea);
    Description: The structure and magnetic properties of an octanuclear coordination cluster with a {Cu(II)4Dy(III)4} core are described and a model for the unusual SMM behaviour is proposed.
    Is part of: Chemical communications (Cambridge, England), 21 February 2014, Vol.50(15), pp.1882-5
    Identifier: 1364-548X (E-ISSN); 24404563 Version (PMID); 10.1039/c3cc46458j (DOI)

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    Magnetic anisotropy of a Co single ion magnet with distorted trigonal prismatic coordination: theory and experiment

    Peng, Yan, Bodenstein, Tilmann, Fink, Karin, Mereacre, Valeriu, Anson, Christopher E, Powell, Annie K
    Physical chemistry chemical physics : PCCP, 02 November 2016, Vol.18(43), pp.30135-30143 [Peer Reviewed Journal]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Title: Magnetic anisotropy of a Co single ion magnet with distorted trigonal prismatic coordination: theory and experiment
    Author: Peng, Yan; Bodenstein, Tilmann; Fink, Karin; Mereacre, Valeriu; Anson, Christopher E; Powell, Annie K
    Subject: Chemistry;
    Description: The single ion magnetic properties of Co(ii) are affected by the details of the coordination geometry of the ion. Here we show that a geometry close to trigonal prismatic which arises when the ligand 6,6'-((1Z)-((piperazine-1,4-diylbis(propane-3,1-diyl))bis(azanylylidene))bis(methanylylidene))bis(2-methoxyphenol) coordinates to Co(ii) does indeed lead to enhanced single-ion behaviour as has previously been predicted. Synthesis of the compound, structural information, and static as well as dynamic magnetic data are presented along with an analysis using quantum chemical ab initio calculations. Though the complex shows a slight deviation from an ideal trigonal prismatic coordination, the zero-field splitting as well as the g-tensor are strongly axial with D = -41 cm and E < 0.01 cm. For the lowest Kramers doublet (S = 1/2) g = 7.86 and g < 0.05 were found. In contrast, the second Kramers doublet possesses a rhombic g-tensor with g = 2.75 and g = 4.35. Due to large spin-orbit coupling resulting...
    Is part of: Physical chemistry chemical physics : PCCP, 02 November 2016, Vol.18(43), pp.30135-30143
    Identifier: 1463-9084 (E-ISSN); 27777991 Version (PMID)