[{"from": "human", "value": "Could you provide a description of this molecule? [C-1][#Si+1]"}, {"from": "gpt", "value": "The molecule appears as yellow to green to bluish-black, iridescent crystals. Sublimes with decomposition at 2700 \u00b0C. Density 3.21 g cm-3. Insoluble in water. Soluble in molten alkalis (NaOH, KOH) and molten iron."}]