Rudolf Hoppe

Rudolf Hoppe ( born October 29, 1922 in Wittenberg in Brandenburg ) is a German chemist, best known through studies of inorganic fluorides and oxides.

Training and Study

Hoppe studied chemistry at the Christian -Albrechts -University of Kiel, and in 1954 received his doctorate at the Westfälische Wilhelms-Universität in Münster. The habilitation was also performed in Münster. In 1958 he received the teaching authorization for the field of inorganic chemistry. 1965 Hoppe followed the call of the Chair at the Institute of Inorganic and Analytical Chemistry, Justus- Liebig- University of Giessen, where he remained until his retirement in 1991.

Scientific Work

Time in Munster

Hoppe has been known by the appearance of the first stable noble gas compound XeF2 ( Xenon difluoride ) in 1962. Until then, it was generally assumed that compounds of this type can not exist. This was due to some previously failed experiments for the preparation of noble gas compounds and the concept of " closed electron octet ", after the noble gases, no connections should be received.

From the properties of the inter-halogen compounds of fluorine was already clear that only noble gas fluorides were ever accessible. A working group in Münster had discussed in detail since 1949/50, the educational opportunities and properties of xenon fluorides. Since 1951, the working group was sure that XeF4 and XeF2 would be thermodynamically stable against decomposition into the elements.

Longer time was planned in Munster, occasionally carry out tests for the representation of xenon fluorides. However, there were technical and conceptual difficulties here. On the one hand xenon was not available in sufficient purity, on the other hand, was thought only a pressure synthesis to the one needed steel cylinders with compressed F2 for promising. These F2 pressure bottles were promised by friend of the Americans since 1961. However, until 1963, a transmission could not take place because the valves of the American pressure bottles were not allowed in Germany and vice versa.

Nevertheless, we succeeded Hoppe 1962 in his group xenon difluoride, XeF2, represent, in the form of transparent crystals. He let electric spark discharges on xenon -fluorine mixtures act. A first attempt to do so was made in the USA by Neil Bartlett on August 2. There was obtained in the following days, xenon tetrafluoride, XeF4.

Time in Giessen

In casting Hoppe continued his extensive research continues in the field of solid state chemistry with a focus on the synthesis and characterization of oxo and fluorometallates of the alkali metals. During his research, he has published over 650 articles in international and national journals. He also worked for many years as a scientific editor of the Journal of the Royal Astronomical Society.

Teaching

As a university teacher, he gave many young people the basics of his craft and knowledge in certain subject areas. In addition, under Hoppe total of 114 doctoral students were his studies as a PhD supervisor.

Further inserts

Hoppe is known as an animal lover and supporter of zoos.

Honors

  • Honorary doctorate from the Christian -Albrechts -University of Kiel (1983 ) and the University of Ljubljana ( 1990).
  • Prize of the Academy of Sciences in Göttingen (1963 )
  • Alfred Stock Price of the German Chemical Society ( 1974)
  • Henri Moissan - Medal of the Société de Chimie France ( 1986)
  • Jozef Stefan Institute in Ljubljana medal of the same name (1988 )
  • Otto Hahn Prize for Chemistry and Physics ( 1989) as the first representative of Inorganic Chemistry
  • Lavoisier Medal of the Société de France ( 1995)

Also, was and is a member of many scientific societies Hoppe and academies such as the German Academy of Sciences Leopoldina (since 1969) and the Bavarian Academy of Sciences and the Austrian Academy of Sciences.

Swell

  • Chemistry - master.de: Prof. Rudolf Hoppe
  • Chemistry - master.de: Pictures ( xenon difluoride, original equipment Hoppes for the production of xenon difluoride )
  • Prof. Dr. Dr. H.C. mult. Rudolf Hoppe ( version of 28 June 2009 at the Internet Archive ) in Prignitz encyclopedia
  • Hoppe, R.; The valence compounds of the noble gases, Applied Chemistry, 1964, 11, 455
Neil Bartlett (chemist) Integrated Authority File
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