Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

UD researchers set new chemical world record

26.11.2007
Chemists from the University of Delaware, in collaboration with a colleague at the University of Wisconsin, have set a new world record for the shortest chemical bond ever recorded between two metals, in this case, two atoms of chromium.

The distance? A minuscule 1.803 Ångstroms, which is on the order of a billionth of the thickness of a human hair.

The chemists weren't driven by the Guinness Book of World Records or even a friendly bet. As is often the case in science, they discovered the molecule, which has a quintuple (i. e., five-fold) bond, quite by accident.

“Sometimes things like this just happen,” said Klaus Theopold, professor and chairperson of the UD Department of Chemistry and Biochemistry.

... more about:
»Researcher »Theopold »World

Theopold and Kevin Kreisel, who graduated with his doctorate from UD in August and is now a postdoctoral researcher at the University of Wisconsin, made the finding, working with research associate Glenn Yap and postdoctoral fellow Olga Dmitrenko, both from UD, and Clark Landis, a colleague from the University of Wisconsin.

The research was reported in the Journal of the American Chemical Society.

Theopold has been researching the chemistry of chromium for a long time. The metal is an important industrial catalyst for making plastics such as polyethylene.

“We discovered this interesting looking molecule and realized that it had an extremely short distance between the metal atoms,” Theopold said.

Using an analytical technique called X-ray diffraction, the scientists were able to look directly at the atomic structure of the new molecule and measure the distance between the chromium atoms.

A rule-of-thumb in chemistry, Theopold said, is that bond length and bond strength go together, so it's likely that the metal-metal bond is a strong one, although Theopold said no one knows for sure.

“This molecule is probably not practically useful. We're not going to get a patent here or cure cancer,” Theopold noted. “Records define the range in which things can exist. It's just an interesting molecule from a fundamental scientific standpoint.”

And those teeny-tiny bonds do mark a new world record for chemistry.

Before the UD discovery, Theopold said, the last record, achieved by researchers at Texas A&M University, stood for nearly 30 years.

Tracey Bryant | EurekAlert!
Further information:
http://www.udel.edu

Further reports about: Researcher Theopold World

More articles from Life Sciences:

nachricht Transport of molecular motors into cilia
28.03.2017 | Aarhus University

nachricht Asian dust providing key nutrients for California's giant sequoias
28.03.2017 | University of California - Riverside

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Periodic ventilation keeps more pollen out than tilted-open windows

29.03.2017 | Health and Medicine

Researchers discover dust plays prominent role in nutrients of mountain forest ecoystems

29.03.2017 | Earth Sciences

OLED production facility from a single source

29.03.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>