workshop on hyper- and hypocoordinated compounds
28-30 august 2017 moscow, russia
N.D. Zelinsky Institute of Organic
Last days of Summer, from Aug. 28 to Aug. 30, 2017, ZIOC RAS hosted first Russian-French workshop on chemistry of the compounds of the group 14 elements.
The 14th group of the Periodic Table of Elements, or "carbon family", unites carbon with its heavier analogues - silicon, germanium, tin and lead. Unlike carbon, whose chemistry is almost exclusively represented by its tetravalent forms, the formation of compounds of lower (hypo-coordinated) and higher (hyper-coordinated) valence is often typical of these elements and this chemistry is being extensively explored. These species may also act as elusive intermediates in the reactions of tetracoordinated molecules and as such, they often escape the attention they deserve. In fact, biannual conferences on Silicon chemistry (ISOS and ESD) and a triennial conference on Germanium, Tin and Lead Chemistry (GTL) include these topics but, besides the separation of C and Si form the rest of the group 14, these aspects are often scattered and lost among many other directions of modern chemistry addressed at these big symposia. From this particular angle, chemistry of hypo and hyper-coordinated compounds of the whole group 14 clearly needed to be discussed with a particular attention.
Traditionally, for more than half a century the ZIOC RAS beheld a leading position in this field. It is indicative that the Institute was the place where the chemistry of hypo and hyper-coordinated compounds of the group 14 and their interesting and unusual properties have been discussed at a specialized forum by the Workshop participants.
Initiated by the researchers of ZIOC RAS, the University of Rennes and the University of Toulouse, this event attracted the attention of scientists from Germany, Austria and Japan as well, allowing many world's most outstanding scientists in this field to be brought together to the forum uniting them with talented young scientists.
The high status of the Workshop was honored by the participation of the Councilor for Science and Technology of the Embassy of France in Russia Mr Alexis MICHEL in its opening and in its round tables. The Councilor was accompanied by the officers of the Scientific Department of the Embassy Maxime BACONNET and Loic CHARLOT.
The scientific part of the conference is opened by Antoine BACEIREDO from the University of Toulouse with a report on new stable silylenes, possible alternative to transition metals in catalysis.
Vladimir LEE talks about pyramidans - a new class of organoelement compounds. Prof. LEE has received his PhD degree from ZIOC, then he worked for a long time in France and now represents the University of Tsukuba (Japan)
Prof. Christoph MARSCHNER from the Technical University of Graz (Austria), with a report "Oligosilanyl groups attached to hypo- and hyper-coordinated silicon, germanium, tin and lead atoms".
Ekaterina Bellan from the University of Toulouse talks about donor-stabilized disiladiaza-cyclobutadienes.
French Republic policy is oriented towards the maximum development of international scientific contacts between our countries. One form of such actions is the creation of joint "laboratories without walls", Laboratoire International Associé (LIA). Another way to consolidate the efforts in the field of scientific development is the bipartite supervision of graduate students when the graduate student works in two countries and on the basis of the unified defense receives the academic degree both from home and from the French university chosen for the study. Corresponding member of RAS Yulia GORBUNOVA (IPCE RAS), one of the leaders of LIA LAMREM, as well as the scientific supervisor of several joint postgraduate students of the Russian Academy of Sciences and the University of Dijon, was assisting the Workshop. At present, several PhD students from ZIOC fulfill their curriculum in "cotutelle", one of them is directly in the thematic of the Workshop.
Discussions do not stop between the sessions. Coffee-breaks.
Director of ZIOC, Prof. Mikhail EGOROV talks about the long work in the field of carbene analogues that he headed at ZIOC.
Maxim CHEGEREV from the Institute of Metalloorganic Chemistry of the Russian Academy of Sciences (Nizhny Novgorod) with the talk on the development of the topic of heavy analogs.
ZIOC honorary guest from Göttingen, Prof. Herbert ROESKY, a foreign member of Russian Academy of Sciences, author of more than 1500 scientific articles, patents and books, having an absolute world record for the number of publications in Angewandte Chemie, laureate of prestigious Leibniz Prize and many others, whose name as an outstanding scientist in organoelement, inorganic and coordination chemistry does not need to be introduced. Prof. ROESKY’s most active participation in the Workshop, his questions and comments gave a lot of new ideas to many attendees.
Experience alternates with youth. Evgeniya SAVERINA from the laboratory #1 ZIOC RAS presents the method she developed for preparing germanium nanoparticles for a new generation of lithium-ion batteries. She performed this work within the framework of the grant of Russian Science Foundation. Presently, Evgeniya is going to start her post-graduate program at ZIOC jointly with the University of Rennes.
The second day of Workshop is opened by Professor Viatcheslav JOUIKOV, professor of the University of Rennes, who speaks about the reactions of electron transfer in hypo- and hyper-coordinated compounds of the "carbon family" elements.
The session is continued by Evgeniya DORONINA from Favorsky Institute of Chemistry RAS (Irkutsk) with the theoretical work on hypercoordination-tuned photochromism.
Dr Tsuyoshi KATO from the University of Toulouse, one of the most productive and cited representatives of modern silylene chemistry, reports on new exceptionally strong electron-donating N-heterocyclic silylene.
Another representative of the laboratory #1 Antonina (Tosya) VISHTORSKAYA. In the 1960s, germanium sesquioxides were first time obtained at ZIOC; one of such compounds later gained popularity worldwide, under the trade name Ge-132, for its biological activity as an antioxidant. Tosya revealed the mechanism of its action as purely lipid, disappearing in the presence of water.
Klaus JURKSCHAT with a report on new ferrocene derivatives with donor group containing substituents, chelates for tin halides and novel pincer-type pro-ligands. Professor of the Technical University of Dortmund and Editor-in-Chief of the Main Group Metal Chemistry journal for the first time visited our country in the 70s as a student of "stroiotrad" (student construction teams), he kept a warm feeling for her culture and has not forgotten the Russian language.
The third day of Workshop is opened by Jörg WAGLER with the talk on heterobinuclear complexes between group 14 and transition metals. Dr WAGLER represents the Technical University - Bergakademie of Freiberg, a city well known to everyone who is familiar with the biography of first Russian academician Mikhail Lomonosov.
Yuri BAUKOV, Professor of Pirogov Medical University talks about the chemistry of ionic chelates of hypercoordinated silicon.
Andrey MENDKOVICH, head of the laboratory #50 ZIOC RAS, shows how electrochemistry and quantum chemistry help to establish the mechanisms of complex redox processes.
Jonas HOFFMANN represents the Universities of Rennes and Bremen with a report on the use of stannols in organic electronics.
Prof. Rudolf PIETSCHNIG from the University of Kassel talks about synthetic and physico-chemical aspects of stereochemically constrained bisphosphano tetrilenes with the ferrocenophane scaffold.
Postgraduate of Prof. PIETSCHNIG, Denis KARGIN, is further developing this topic on phosphano substituted germylenes, stannylenes and plumbylenes.
Leading researcher of Favorsky Institute of Chemistry (Irkutsk) Valery SIDORKIN tells about the nature of chemical bonds in unusual derivatives of hypocoordinated silicon and on modern theoretical approaches to describe it.
Alexander KORNEV, Leading researcher, another representative of Nizhny Novgorod - one of the organometallic capitals of Russia, talks on structural variability of R2C adducts of 3a,6a-diaza-1,4-diphosphapentalene.
The talk of Kirill ZAITSEV from the Moscow State University on tetrylenes and catenated compounds of the group 14 with new polydentate ligands completes the Workshop program.
In fact, the Russian-French workshop on chemistry of the compounds of the group 14 elements not only became the most representative forum on elemental, organometallic and coordination chemistry held in ZIOC in 2017 but also - thanks to all its participants - first international event of its kind. The Workshop organizing committee is grateful to all speakers who greatly contributed to the success of this meeting. Special thanks are to the team who prepared and backed it up by their enthusiasm and efforts. Separate thanks are to Alexei FINOGENOV, who opened a new direction in the development of furoxans in 2011 and did not forget the institute, as well as to Vadim KEBEKOV, who supported English, French and Spanish communications of the Workshop, a man of great personal charm who has subdued the hearts of the participants.
The excursion to Vorobyovy Hills and to the Chemical Department of Moscow State University after the end of Workshop with the youngest participants Natasha and Lena JOUIKOV:
See you next time!