Absorption Spectra of Co-ordination Compounds. I

The bright future of stereoselective synthesis of co-ordination compounds

Transfer of chirality during the build-up of molecules has been applied innumerable times in organic chemistry since the end of the 19th century, when it was introduced in the so-called asymmetric synthesis by E. Fischer. Although analogous reactions were introduced in co-ordination chemistry in its early development, diastereoselective reactions have not been applied in a very systematic way f...

Two-photon absorption spectra of carotenoids compounds

Independence and Co-ordination –

* The views expressed in this paper are personal. Most outsiders tend to base their analysis of the future of the Eurosystem on the shape of the Federal Reserve System in the US. This paper argues that the US model is inappropriate. It suggests that the Eurosystem is pursuing a different arrangement, where the balance of power in the national central banks rather than in the centre may continue...

Turbulence measurements from H I absorption spectra

We use the millennium Arecibo 21 cm absorption-line survey measurements to examine the issue of the non-thermal contribution to the observed Galactic H I line widths. If we assume a simple, constant pressure model for the H I in the Galaxy, we find that the non-thermal contribution to the line width, vnt scales as v nt ∝ l , for vnt larger than ∼ 0.7 km s. Here l is a derived length scale and α...

Co-ordination and Specialisation

This paper addresses the problem of division of labour as an evolutionary process in which co-ordinated agents attempt problem-solving as a search in problem space. Co-ordination stress and learning trigger adaptation but as complexity rises radical solutions are sought prompting radical organisational as well as technological change. The analytical issues involved are further explored by resor...