Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Synthesis with a template: Carbon-free fullerene analogue

Abstract:
The discovery of a soccer-ball-shaped molecule made of 60 carbon atoms was a minor revolution in chemistry: Fullerenes are spherical, highly symmetrical molecules made of carbon atoms, and are the third form of carbon after diamond and graphite. However, the C60 "soccer ball" is not the only fullerene by far. Among its less stable relations is the C80 fullerene. There are seven different possible structural forms that have 80 carbon atoms in a symmetrical, spherical arrangement. Among the forms that are so instable they have not previously been produced is the icosahedral version (icosahedron= twenty-sided figure). Instead, a team led by Manfred Scheer at the University of Regensburg has now synthesized the first example of an inorganic, carbon-free C80 analogue. As they report in the journal Angewandte Chemie, their fullerene-type system of building blocks can be produced by using a template (template-controlled aggregation).

Synthesis with a template: Carbon-free fullerene analogue

Germany | Posted on May 1st, 2009

The researchers used pentaphosphaferrocene (a five-membered ring made of phosphorus atoms bound to an iron atom) and copper chloride for their synthesis. Their template was a carborane—a compound made of carbon, boron, and hydrogen atoms—of the appropriate size (ca. 0.8 nm) and shape (pseudo five-fold symmetry). The individual building blocks aggregate around the carborane to form a spherical supermolecule with fullerene-type geometry, enclosing the carborane within the structure as a "guest molecule". This gave the scientists a structure that corresponds to an icosahedral fullerene made of 80 carbon atoms. This scaffold is made of twenty copper and sixty phosphorus atoms that are arranged into twelve rings containing five phosphorus atoms each and 30 six-membered rings containing two copper and four phosphorus atoms. This inorganic shell interacts electronically with the enclosed guest molecule.

"Template-controlled aggregation has been shown to be an efficient route to large, entirely spherical molecules of fullerene-type topology," says Scheer. "The guest molecule determines the size and composition of the fullerene-type product."

Author: Manfred Scheer, Universität Regensburg (Germany), www.chemie.uni-regensburg.de/Anorganische_Chemie/Scheer/scheer.html
Title: A Carbon-Free Icosahedral Molecule with C80 Topology
Angewandte Chemie International Edition, doi: 10.1002/anie.200900342

Copy free of charge. We would appreciate a transcript of your article or a reference to it.

####

For more information, please click here

Contacts:
Manfred Scheer

49-941-943-4441

Copyright © Wiley-Blackwell

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

World's fastest man-made spinning object could help study quantum mechanics July 20th, 2018

Relax, just break it July 20th, 2018

Future electronic components to be printed like newspapers July 20th, 2018

The relationship between charge density waves and superconductivity? It's complicated July 19th, 2018

FEFU scientists reported on toxicity of carbon and silicon nanotubes and carbon nanofibers: Nanoparticles with a wide range of applying, including medicine, damage cells of microalgae Heterosigma akashivo badly. July 18th, 2018

Chemistry

Sirrus's Issued Patent Portfolio Continues To Accelerate July 18th, 2018

Barium ruthenate: A high-yield, easy-to-handle perovskite catalyst for the oxidation of sulfides July 13th, 2018

The Institute of Applied Physics at the University of Tsukuba near Tokyo in Japan uses Deben's ARM2 detector to better understand catalytic reaction mechanisms June 27th, 2018

Discoveries

World's fastest man-made spinning object could help study quantum mechanics July 20th, 2018

Relax, just break it July 20th, 2018

Future electronic components to be printed like newspapers July 20th, 2018

The relationship between charge density waves and superconductivity? It's complicated July 19th, 2018

Appointments/Promotions/New hires/Resignations/Deaths

Jim Barnhart Joins Nanometrics as Senior Vice President of Operations March 15th, 2018

Jonathan Chou to Join Nanometrics as Chief Financial Officer February 26th, 2018

Ocean Optics Grows Sales Organization with Executive Appointments: Henry Langston promoted, Christine Stannard joins spectral sensing product developer December 23rd, 2017

Emmanuel Sabonnadiere is Leti’s New CEO November 28th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project