In view of current interest in the problem of free or restricted internal rotation in molecules, we may mention briefly some results which indicate free rotation of methyl groups about the Cd—C bond ...

THE decomposition of some metal alkyls by ultra-violet light is well known and studies of free radicals produced by the photodecomposition of zinc, cadmium and lead alkyls have been extensively ...

Let's turn to metals. There's no doubt that some of those are poisonous. Lead, in pipes, petrol, paint and soil has caused all sorts of trouble. Mercury, it's silvery liquidity once a common sight in ...