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Ann M. Chippindale
University of Reading
Crystal structureOrganic chemistryInorganic chemistryChemistryCrystallography
149Publications
29H-index
2,480Citations
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Publications 131
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The structural dynamics of a 1D mixed-metal cyanide, Cu_{1/3}g_{1/3}u_{1/3}N, with intriguing thermal properties is explored. All the current known related compounds with straight-chain structures, such as CuCN, AgCN, AuCN and M_x'_{1-x}N (M, M' = Cu, Ag, Au), exhibit 1D negative thermal expansion (NTE) along the chains and positive thermal expansion (PTE) perpendicular to them. Cu_{1/3}g_{1/3}u_{1/3}N exhibits similar PTE perpendicular to the chains, however PTE, rather ...
The structural dynamics of a 1D mixed-metal cyanide, Cu_{1/3}g_{1/3}u_{1/3}N, with intriguing thermal properties is explored. All the current known related compounds with straight-chain structures, such as CuCN, AgCN, AuCN and M_x'_{1-x}N (M, M' = Cu, Ag, Au), exhibit 1D negative thermal expansion (NTE) along the chains and positive thermal expansion (PTE) perpendicular to them. Cu_{1/3}g_{1/3}u_{1/3}N exhibits similar PTE perpendicular to the chains, however PTE, rather ...
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#2Mohamed ZbiriH-Index: 8
Last. Simon J. HibbleH-Index: 18
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This study explores the relationship between phonon dynamics and negative thermal expansion (NTE) in CuxNi2-x¬(CN)4. The partial replacement of nickel (II) by copper (II) in Ni(CN)2 leads to a line phase, CuNi(CN)4 (x = 1), and a solid solution, CuxNi2-x¬(CN)4 (0 ≤ x ≤ 0.5). CuNi(CN)4 adopts a layered structure related to that of Ni(CN)2¬ (x = 0), and interestingly exhibits 2D NTE which is ~ 1.5 times larger. Inelastic neutron scattering (INS) measurements combined with first principles lattice ...
1 CitationsSource
#1Sakineh Dadashpour (Mazandaran University of Medical Sciences)H-Index: 5
#2Tuba Tüylü Küçükkılınç (Hacettepe University)H-Index: 8
Last. Hamid Irannejad (Mazandaran University of Medical Sciences)H-Index: 13
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Aim: Mesenchymal–epithelial transition factor (c-Met)/HGF overactivation is involved in diverse human cancers. Materials & methods: Herein, we report the synthesis and biological evaluation of thio...
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#2Mohamed ZbiriH-Index: 12
Last. Simon J. HibbleH-Index: 18
view all 4 authors...
This study explores the relationship between phonon dynamics and negative thermal expansion (NTE) in Cu_xi_{2-x}CN)_4 The partial replacement of nickel (II) by copper (II) in Ni(CN)_2leads to a line phase, CuNi(CN)_4(x = 1), and a solid solution, Cu_xi_{2-x}CN)_4(0 \leqx \leq0.5). CuNi(CN)_4adopts a layered structure related to that of Ni(CN)_2(x = 0), and interestingly exhibits 2D NTE which is about 1.5 times larger. Inelastic neutron scattering (INS) measure...
#1Valeria Castelletto (University of Reading)H-Index: 41
#2Ann M. Chippindale (University of Reading)H-Index: 29
Last. King Hang Aaron Lau (University of Strathclyde)H-Index: 20
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An aromatic peptoid analogue of the diphenylalanine dipeptide self-assembles in aqueous solution and the first crystal structure was obtained for this class of compound. This reveals molecular packing stabilized by networks of hydrogen bonds. Free-floating nanosheet lamellar structures are observed in solution, which form via cooperative intermolecular interactions driven by π stacking.
1 CitationsSource
#1Seyed Sajad Hosseini Balef (Mazandaran University of Medical Sciences)H-Index: 2
#2Ann M. Chippindale (University of Reading)H-Index: 29
Last. Hamid Irannejad (Mazandaran University of Medical Sciences)H-Index: 13
view all 3 authors...
We recently reported that the hydroxyiminoethanone derivative, (E)-OXM, behaves as a highly selective COX-1 inhibitor (COX-1 SI = 833), and also an interesting scaffold with unique characteristics. In the current study, a comprehensive crystallographic and computational study was performed to elucidate its conformational stability and pharmacological activity. Its conformational energy was studied at the B3LYP/6-311G** level of theory and compared to the single-crystal X-ray diffraction data. In...
2 CitationsSource
#1James O. Taylor (University of Reading)H-Index: 3
#2Florentine L. P. Veenstra (University of Reading)H-Index: 1
Last. František Hartl (University of Reading)H-Index: 37
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A series of complexes [Mo(η3-allyl)(CO)2)(x,x′-dmbipy)(NCS)] (dmbipy = dimethyl-2,2′-bipyridine; x = 4–6) have been synthesized and their electrochemical reduction investigated using combined cyclic voltammetry (CV) and variable-temperature spectroelectrochemistry (IR/UV-vis SEC) in tetrahydrofuran (THF) and butyronitrile (PrCN), at gold and platinum electrodes. The experimental results, strongly supported by density functional theory (DFT) calculations, indicate that the general cathodic path o...
1 CitationsSource
#2Mohamed ZbiriH-Index: 12
Last. Alex C. HannonH-Index: 33
view all 6 authors...
ZnNi(CN)4 is a 3-D framework material consisting of two interpenetrating PtS-type networks in which tetrahedral [ZnN4] units are linked by square-planar [NiC4] units. Both the parent compounds, cubic Zn(CN)2 and layered Ni(CN)2, are known to exhibit 3-D and 2-D negative thermal expansion (NTE), respectively. Temperature-dependent inelastic neutron scattering (INS) measurements were performed on a powdered sample of ZnNi(CN)4 to probe phonon dynamics. The measurements were underpinned by ab-initi...
Source
#2Mohamed ZbiriH-Index: 12
Last. Alex C. HannonH-Index: 33
view all 6 authors...
ZnNi(CN)4 is a 3-D framework material consisting of two interpenetrating PtS-type networks in which tetrahedral [ZnN4] units are linked by square-planar [NiC4] units. Both the parent compounds, cubic Zn(CN)2 and layered Ni(CN)2, are known to exhibit 3-D and 2-D negative thermal expansion (NTE), respectively. Temperature-dependent inelastic neutron scattering (INS) measurements were performed on a powdered sample of ZnNi(CN)4 to probe phonon dynamics. The measurements were underpinned by ab-initi...
3 CitationsSource
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