NO2為什麼成紅棕色?
物質之所以會有顏色通常是於可見光區域有吸收
像有機物會有顏色大多是具有長的共軛系統
而無機錯合物則可能是charge transfer
但想不通的是 NO2並沒有長共軛系統 但為什麼會成紅棕色
有其他合理的理由可以說明 NO2 HOMO-LUMO gap
為什麼會如此小 而使其在可見光區域有吸收的原因嗎?
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