Research work · 1997
The d-block - redox chemistry
Inorganic Chemistry in Biology
Abstract
This chapter explains the d-block of elements as a family of metals with similar characteristics that represent the transition between the highly electropositive s-block metals and the electronegative p-block non-metals. It discusses the behaviour of d-block elements as ions in solution and relates this to coordination and redox chemistry. It also examines transition elements that exhibit variable oxidation states, such iron that exist in oxidation states of II, III, IV, and VI. The chapter describes the octahedral arrangement of the six d electrons that can be in two dispositions and the possible dichotomy that plays an important role in iron-protein chemistry. It mentions a pair of Fe(II) and Fe(III) ions that behave like an isolated metal centre.