Ocr salters chemistry coursework a2 example

Metal complexes that have unpaired electrons are magnetic . Considering only monometallic complexes, unpaired electrons arise because the complex has an odd number of electrons or because electron pairing is destabilized. Thus, monomeric Ti(III) species have one "d-electron" and must be (para)magnetic , regardless of the geometry or the nature of the ligands. Ti(II), with two d-electrons, forms some complexes that have two unpaired electrons and others with none. This effect is illustrated by the compounds TiX 2 [(CH 3 ) 2 PCH 2 CH 2 P(CH 3 ) 2 ] 2 : when X =  Cl , the complex is paramagnetic ( high-spin configuration), whereas when X =  CH 3 , it is diamagnetic ( low-spin configuration). It is important to realize that ligands provide an important means of adjusting the ground state properties.

Ocr salters chemistry coursework a2 example

ocr salters chemistry coursework a2 example

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