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Your search keyword '"Sobolev, Alexandre N."' showing total 21 results
Start Over Author "Sobolev, Alexandre N." Journal crystal growth & design
21 results on '"Sobolev, Alexandre N."'

1. A Merry Dance Across the π-Cloud: Tracking the Transformation of a 2,7-Substituted Dihydropyrene Through a Thermally Stimulated Single-Crystal-to-Single-Crystal Reaction

Author

Roemer, Max, primary, Gillespie, Angus A., additional, Turner, Gemma F., additional, Flematti, Gavin R., additional, Hobday, Claire L., additional, Sobolev, Alexandre N., additional, Wild, Duncan A., additional, Nealon, Gareth L., additional, Piggott, Matthew J., additional, Moggach, Stephen A., additional, and Koutsantonis, George A., additional

Published
2021
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2. Constructing Multicomponent Materials Involving Inclusion of Mono- and Bis-Imidazolium Cations in Gadolinium(III)-p-sulfonatocalix[5]arene Coordination Networks

Author

Ling, Irene, Boulos, Ramiz A., Skelton, Brian W., Sobolev, Alexandre N., Alias, Yatimah, and Raston, Colin L.

Abstract

p-Sulfonatocalix[5]arene forms host–guest complexes in the solid state with hydroxyl-functionalized imidazolium and bis-imidazolium cations, also involving gadolinium(III) ions which form a coordination polymer through the sulfonate groups of the calixarene. The interplay of the components have been investigated using Hirshfeld surface analysis, with the nature of the species in aqueous solution in the absence of the paramagnetic lanthanide ions studied using 1H NMR and modeled using molecular simulations.

Published
2024
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19. Molecular Imprisonment: Host Response to Guest Location,Orientation, and Dynamics in Clathrates of Dianin’s Compound.

Author

Lee, Jackson J., Sobolev, Alexandre N., Turner, Michael J., Fuller, Rebecca O., Iversen, Bo B., Koutsantonis, George A., and Spackman, Mark A.

Subjects
*MOLECULAR orientation, *CLATHRATE compounds, *X-ray diffraction, *SINGLE crystals, *BENZENE, *FUNCTIONAL groups
Abstract

Singlecrystal X-ray diffraction data measured at 100 K for Dianin’scompound (DC) and 18 of its clathrates formed with a wide range ofguest molecules provide considerable insight into the way the hostadjusts to accommodate guest molecules. Detailed information is alsoobtained regarding the location, orientation, and dynamics of theguests in the host cavity. Although all unit cells are closely similarin size, the host undergoes significant change in response to theimprisonment of its various guests. Enclathration typically resultsin a larger cell and cavity volume, but for the small molecules methanol,ethanol, and nitromethane the host actually shrinks significantlyaround the guests in the cavity. In most clathrates, there is evidenceof close contacts between atoms in the guest and the phenol −OHgroup and/or ring of the DC host. The series of clathrates formedby benzene, toluene, and the halobenzenes show the orientation ofthe benzene ring to be progressively modifed by the increasing sizeof the substituent atom or group on the ring in a systematic mannerthat reflects functional group contributions to van der Waals volumes. [ABSTRACT FROM AUTHOR]

Published
2014
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21. Exclusive Endo-Cavity Interplay of t-Bu-calix[6]arene with C70.

Author

Makha, Mohamed, Raston, Colin L., Sobolev, Alexandre N., and Turner, Peter

Abstract

Toluene solutions of fullerene C70 and t-Bu-calix[6]arene form a 2:1 inclusion complex that has been structurally authenticated using synchrotron source X-ray diffraction data. Remarkably, the fullerene is not included in the cavity of the calixarene, and this has implications in predicting the structures of fullerene complexes of other calixarenes and container molecules. The fullerenes shroud the exo surface of the calixarene at the van der Waals limit, with the fullerenes arranged into corrugated sheets, with each calixarene interdigitated at the upper rim with the upper rim of two other calixarenes, the macrocycles forming a bilayer separating the sheets of fullerenes. Toluene solutions of fullerene C70 and t-Bu-calix[6]arene form a 2:1 solid-state inclusion complex. The fullerenes shroud the exo surface of the calixarene at the van der Waals limit, with the fullerenes arranged into corrugated sheets, with interdigitated calixarenes through the upper rims forming a bilayer between the sheets of fullerenes. [ABSTRACT FROM AUTHOR]

Published
2006
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