title: Crystal Chemistry of Novel Oxide Compounds of Se4+ and Se6+
metadata.name: dc.contributor.advisor
metadata.value: Krivovichev, Sergey V.
metadata.lang: -
metadata.name: dc.contributor.advisor
metadata.value: Mentré, Olivier
metadata.lang: -
metadata.name: dc.contributor.advisor
metadata.value: Colmont, Marie
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kovrugin, Vadim M.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2019-07-30T10:12:15Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2019-07-30T10:12:15Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2015
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Vadim M. Kovrugin. Crystal Chemistry of Novel Oxide Compounds of Se4+ and Se6+. Saint Petersburg, 2015. 240 p.
metadata.lang: en_GB
metadata.name: dc.identifier.isbn
metadata.value: 978-5-288-05619-2
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/16094
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: This work deals with the synthesis and characterization of novel oxide materials containing selenium in the oxidation states of +4 or +6. The structural types occurring in 33 known oxoselenite minerals have an amazing variety, and cover the whole field from 0D isolated complexes to 3D frameworks, which offer unexploited potentialities in terms of physical properties. This thesis aims to synthetize and investigate new Se based
  compounds, using methods inspired by mineralogical processes. Information based on original building units assembled into original architectures have been deduced and compared to related inorganic phases of the
  literature. In the present study, our innovative so-called “geo-inspired” approach is applied in order to obtain complex novel crystalline compounds. This approach assumes emulation and modelling of natural crystal growth processes. Herein, we used either a traditional descriptive procedure based on consideration
  of the crystal structures in terms of coordinations of cations, or the modern theory of anion-centered tetrahedra developed by the St. Petersburg school of crystallography and the UCCS group of solid-state chemistry in Lille, in cases when the traditional structural interpretation does not reflect basic principles of crystal architecture. Thus, several metal-oxide chemical systems with Se4+/6+ and various metals (Cu+/2+, Ni2+, Co2+, V4+/5+,
  Mn2+, Fe3+, Pb2+, Bi3+, U6+) were studied in the context of the present work. The thesis contains results of synthetic procedures, and crystal chemical characterization of 39 new metal selenites, selenates, and selenite-selenates. The analogy of selenite groups with phosphites was also investigated. Main results are described with references to more detailed publications given in the appendices.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Saint Petersburg State University Studies in Earth Sciences;
metadata.lang: -
metadata.name: dc.subject
metadata.value: selenite
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: selenate
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: uranyl
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: synthesis
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: crystal structure
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: single crystal X-ray analysis
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Crystal Chemistry of Novel Oxide Compounds of Se4+ and Se6+
metadata.lang: en_GB
metadata.name: dc.title.alternative
metadata.value: Кристаллохимия новых кислородных соединений четырех- и шестивалентного селена (Russian translation)
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Thesis
metadata.lang: en_GB
resources.filename: Kovrugin.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/16094/1/Kovrugin.pdf
resources.format: Adobe PDF
resources.size: 11,5 MB