Optical isomers are possible for each of these 15 forms, making a total of 30 isomers. These isomers are referred to as enantiomers or enantiomorphs of each other and their non-superimposable structures are described as being asymmetric. Various methods have been used to denote the absolute configuration of optical isomers such as D or L, R or S and L or D . There are several types of this isomerism frequently encountered in coordination chemistry and the following represents some of them. In the case of water, this is called Hydrate isomerism.
Linkage isomerism occurs with ambidentate ligands.
These ligands are capable of coordinating in more than one way. Cl the nitro isomer - N attached. As part of this course, you are required to make yourselves familiar with the rules related to Inorganic Nomenclature . Coordination compounds have been used from the earliest times as dyes and pigments, for example madder dye which is red, was used by the ancient Greeks and others. It is a complex of Hydroxyanthraquinone.