Taking Stock

The basic models of coordination chemistry that we use today are growing old, but ageing gracefully. What is remarkable about the crystal field theory for example is not that it has been in use for so many decades but that it works so well at all, given its simplistic basis. Metals at least the accessible ones, are limited in number, but the chemistry of some is at yet not well explored. For example, it isn’t too many years ago that examples of organometallic complexes of f-block elements were very few in number; while some people could apparently explain this from a theoretical standpoint, laboratory chemists simply beavered away and found their way well into the field. Ligands the very body of coordination chemistry, have evolved through advances in synthesis to the level where it is practicable to routinely produce the ‘designer’ ligand– made for a particular purpose. While molecular synthesis lies at the heart of the field there is growing interest in the ‘in silico’ complex– modelled on a computer chip, but not necessarily made in the lab oratory. Classical molecular modelling, which essentially is based on Hooke’s Law and treats atoms as solid spheres joined by springs, gives a surprisingly valid view of shape and isomer preference, even as it is being overtaken by more sophisticated approaches such as density functional theory. Complexes are finding their way into a wide field of endeavour including medicine, solid state chemistry and nanotechnology. For a field that some thought was ‘all done’ by the 1970s, coordination chemistry continues to expand and surprise. One good reason for this continued growth is that, despite all our sophistication we really know very little still; there is plenty remaining out there to be discovered.

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كيف تؤثر العناية بالأسنان على صحة الكبد؟

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المزيد

مواضيع ذات صلة

Molecular Symmetry: The Point Group

Organometallic Compounds

Bridging Ligands

Organic Molecules as Ligands

Multipliers

Polydenticity

Crystal Ball Gazing

Complex Futures

Better Ways to Synthesize Fine Organic Chemicals

Industrial Roles for Ligands and Coordination Complexes

Metal Extraction

Fluoroionophores