The discussion centers on the search for green-colored molecules smaller than 3 angstroms in size. The user initially mentions Cr2O3 but notes it exceeds the desired size at 3.5 angstroms. Suggestions include exploring metal chlorides, oxides, and disulfides, particularly focusing on vanadium and titanium. The user attempts to estimate molecular sizes based on cubic assumptions using mass and volume calculations, arriving at a size of approximately 2.8 angstroms for water. They reference "Structural Inorganic Chemistry" by Wells as a definitive source for green inorganic molecules and provide a comprehensive list of potential candidates, including various chromium, iron, nickel, and vanadium compounds. The discussion emphasizes the need for accurate size data and encourages further research into green molecules of interest.
