Alexandre Sobolev

Dr

  • The University of Western Australia (M310), 35 Stirling Highway, Room 450, Bayliss Building, Perth campus

    6009 Perth

    Australia

  • 2282 Citations
  • 26 h-Index
19942019
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Personal profile

Biography

Dr. Alexandre Sobolev trained as a crystallographer in Russia, ultimately developing, from an undergraduate physics background, a chemical specialization in the 'small molecule' field. He rose to the Senior Research Scientist in charge of these activities in the Laboratory of Chemical Crystallography and Structure Analysis at the L. Ya. Karpov Physico-Chemical Research Institute (Moscow) over a period of twenty years. His achievements in this field are summarized in the Cambridge Crystallographic Data Base and Inorganic Crystal Structure Database and are readily examined there, as well as in more than two hundred associated primary publications.

Dr. Sobolev moved to Australia in 1992 join with the electron density studies research group at UWA (ARC research grant), initially to participate in the construction, programming and commissioning of a 'Larsen-type' single crystal Huber four-circle X-ray diffractometer operating at about 10 K, one of the very few in the world, and the only one in the Southern Hemisphere. The machine was required for the acquisition of very high-quality data for a charge/spin-density determination project. He was associated with that activity throughout the ensuing decade, and the outcomes are recorded in the full list of his publications.

At the same time, having experience and a strong background in the field of structural crystallography and crystal chemistry, Dr. Sobolev have frequently advised the faculty of the Chemistry Discipline on the suitability of their compounds for structure determination and on the interpretation of the results.

Currently Dr. Sobolev has held a position of Research Associate in the School of Biomedical, Biomolecular and Chemical Sciences at UWA, working in the field of X-ray structure analysis, concentrating on difficult or problem structures, consulting staff, teaching crystallography to PhD-students and advanced undergraduates involved.

Roles and responsibilities

X-ray molecular crystal structure analysis

Current projects

Charge density analysis of supramolecular crystals

Research

During last decade, Dr. Sobolev’s most fruitful recent achievements have been done in the field of structural characterization of self-assembled Host-Guest macromolecular complexes, involving the crystal chemistry of supramolecular compounds in which the number of non-hydrogen atoms in the crystallographic asymmetric unit estimated in hundreds, intermediate between small molecule and protein crystallography. Here critical problems arise, connected with the physical properties of such crystals, where the dynamics of molecules in the crystal, their full or fragmentary disorder, the presence of a large number of solvent molecules and crystalline water molecules, lead to a significant decrease in quality of experimental X-ray data and the resolution of the structure. This, in consequence, requires considerable expertise and effort during the structure solving procedure and subsequent structure refinement. In this area, considerations of strategy of the X-ray experiment on crystals of such compounds are often comparable to those for electron charge density studies.

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Research Output 1994 2019

  • 2282 Citations
  • 26 h-Index
  • 167 Article
  • 3 Review article
  • 2 Conference paper
  • 1 Conference article

Allan White and Polypyridines: Extending the Lanthanide(iii) Complex Series

Cotton, S. A., Harrowfield, J. M., Semenova, L. I., Skelton, B. W., Sobolev, A. N. & White, A. H., 21 Jun 2019, In : Australian Journal of Chemistry.

Research output: Contribution to journalArticle

Lanthanoid Series Elements
Ligands
Bromides
Crystal lattices
Metals
2 Citations (Scopus)

Allan White and Solvento/Aqua Complexes: ScIII Solvation

Chan, E. J., Cotton, S. A., Harrowfield, J. M., Skelton, B. W., Sobolev, A. N. & White, A. H., 4 Jul 2019, In : Australian Journal of Chemistry.

Research output: Contribution to journalArticle

Solvation
Ligands
Picrates
Scandium
Anions
1 Citation (Scopus)

A spectroscopic and computationally minimal approach to the analysis of charge-transfer processes in conformationally fluxional mixed-valence and heterobimetallic complexes

Gückel, S., Gluyas, J. B. G., Eaves, S. G., Safari, P., Yufit, D. S., Sobolev, A. N., Kaupp, M. & Low, P. J., 2 Jul 2019, In : Chemistry - A European Journal. 25, 37, p. 8837-8853

Research output: Contribution to journalArticle

Discrete Fourier transforms
Charge transfer
Molecular electronics
Geometry
Potential energy
1 Downloads (Pure)

Carbon-Rich Trinuclear Octamethylferrocenophanes

Roemer, M., Wild, D. A., Sobolev, A. N., Skelton, B. W., Nealon, G. L., Piggott, M. J. & Koutsantonis, G. A., 18 Mar 2019, In : Inorganic Chemistry. 56, 6, p. 3789–3799

Research output: Contribution to journalArticle

Carbon
Friedel-Craft reaction
Metals
Friedel-Crafts reaction
ferrocenes

Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans

Walkey, M. C., Peiris, C. R., Ciampi, S., C. Aragonès, A., Domínguez-Espíndola, R. B., Jago, D., Pulbrook, T., Skelton, B. W., Sobolev, A. N., Díez Pérez, I., Piggott, M. J., Koutsantonis, G. A. & Darwish, N., 9 Oct 2019, In : ACS APPLIED MATERIALS & INTERFACES. 11, 40, p. 36886-36894 9 p.

Research output: Contribution to journalArticle

Equipment

Ruby
Molybdenum
Diffractometers
Diffraction
Crystal structure
Molybdenum
Aluminum Oxide
Diffractometers
Carrier concentration
Diffraction