Thermochromic behavior arises from many types of rearrangement at the molecular level. Various mechanisms include: phase transition, change in ligand geometry, equilibria between different molecular structure, and change in the number of solvent molecules in the coordination sphere.(1) In this report, changes in ligand geometry, coordination number, and lattice structure are shown to lead to changes in color. Thermochromic behavior can be divided into two main classes: continuous and discontinuous. Some color changes are gradual; as the temperature increases over time, the color slowly changes. This can be due to the breaking or rearrangement of the lattice. This type of rearrangement is also known as continuous thermochromism.(3) On the other hand, a dramatic change in color can occur at a specific temperature or over a very small temperature range. This is known as discontinuous thermochromism.(4)