Continuing the successful series of triennial conferences on the above named topic, the Fourth International Conference is to be held at Cambridge from 9th to 13th July, 1990.

Organised by the Dalton Division of the Royal Society of Chemistry, the topics to be covered include: activation of small molecules; bio-inorganic and medical chemistry; compounds with metal-metal bonds and clusters; co-ordination chemistry; heterogeneous catalysis and surface studies; homogeneous catalysis; new electronics materials, sensors and electrode systems; organic synthesis; organometallic chemistry; photochemistry and related methods of molecular activation; and regio- and stereo-selective reactions.

People wishing to contribute or to receive further information about this important international meeting, should contact Dr. John F. Gibson, Secretary (Scientific), Royal Society of Chemistry, Burlington House, Piccadilly, London W1V 0BN, England.