Abstract:
The existence of a red nickel diquinoline thiocyanate had previously been reported from this laboratory. As this colour is unusual among nickel compounds, the further investigation of the substance was undertaken as the object of the first half of this thesis. With this in view, a comparison was made of the series comprising nickal tetraquinoline thiocyanate (green), nickel diquinoline thiocyanate (red), and anhydrous nickel thiocyanate (yellow). It was hoped that some serial relationship might be found between the cause of colour and the molecular structure. A comparison was likewise made of nickel tetra-and di-quinoline thiocyanates with the corresponding nickel isoquinoline thiocyanates. It was hoped that some explanation might be brought forward for the marked differences in physical properties of the isomeric tetrammines.
