Posts Tagged ‘chemical concepts’

Bond stretch isomerism. Did this idea first surface 100 years ago?

Tuesday, February 9th, 2016
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The phenomenon of bond stretch isomerism, two isomers of a compound differing predominantly in just one bond length, is one of those chemical concepts that wax and occasionally wane.[1] Here I explore such isomerism for the elements Ge, Sn and Pb.

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References

  1. J.A. Labinger, "Bond-stretch isomerism: a case study of a quiet controversy", Comptes Rendus Chimie, vol. 5, pp. 235-244, 2002. http://dx.doi.org/10.1016/S1631-0748(02)01380-2

Driving the smallest car ever made: a chemical perspective.

Thursday, November 10th, 2011
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Fascination with nano-objects, molecules which resemble every day devices, is increasing. Thus the world’s smallest car has just been built[1]. The mechanics of such a device can often be understood in terms of chemical concepts taught to most students. So I thought I would have a go at this one!

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References

  1. T. Kudernac, N. Ruangsupapichat, M. Parschau, B. Maciá, N. Katsonis, S.R. Harutyunyan, K. Ernst, and B.L. Feringa, "Electrically driven directional motion of a four-wheeled molecule on a metal surface", Nature, vol. 479, pp. 208-211, 2011. http://dx.doi.org/10.1038/nature10587