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塩素酸塩の理論的研究:平流圏の塩素化学への影響
Srinivasan Parthiban1, Timothy J Lee, Sujata Guha
1MST27B-1, NASA Ames Research Center, Moffett Field, California 94035-1000, USA.
Journal of the American Chemical Society
|August 21, 2003
まとめ
この研究では,理論的に新型の平流層塩素貯蔵物種,ClNO(4) とClNO(5) を調査しています. ClNO ((4)) とClNO ((5) のイソマーは大気中に存在する可能性は低いが,O ((2) ClONO ((2) の形成は実験室での条件では可能である.
科学分野:
- 大気化学 大気化学
- 理論化学 理論化学について
- 量子化学とは,量子化学である.
背景:
- stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine reservoir species stratospheric chlorine species stratospheric chlorine species stratospheric chlorine species stratospheric chlorine species stratospheric chlorine species stratospheric chlorine species stratospheric chlorine species stratospheric chlorine species stratospheric chlorine species stratospheric ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone ozone is located located located located located located located located located located located in the northern part of the united states of the united states of the united states of the united states of the us
- 既存のモデルは,主にClONOのようなよく知られた種に焦点を当てています.
- 新しい塩素貯蔵庫種の潜在的な存在と性質は,理論的な調査を必要とする.
研究 の 目的:
- 潜在的平流層塩素貯蔵物種,特にClNO(4) とClNO(5) の同位体について理論的に調査する.
- これらの新種の構造的,エネルギー的,スペクトル学的性質を決定する.
- 実験室環境下での大気における関連性と潜在的形成を評価する.
主な方法:
- 密度関数理論 (DFT) は,構造的および振動的分析のためのB3LYPの機能的および大きなベースセットを備えています.
- 原子自然軌道 (ANO) ベースセットによるカップリングクラスター計算 (CCSD(T)) は,精密なエネルギー.
- 熱形成と熱解離の安定性を評価するためのアイソデミック反応.
主要な成果:
- ClNO(4) とClNO(5) のそれぞれに3つの安定同位体が見つかりました.
- 計算した均衡構造,二極瞬間,回転定数,振動周波数,赤外線強度.
- ClONO (((2) と O (((2) ClONO (((2) の計算データと実験データ/高レベルのデータとの間で良好な一致が確認されました.
結論:
- ClNO ((4)) とClNO ((5) のイソメアは,反応物質濃度が不十分であるため,大気における関連性が欠如している可能性が高い.
- O(2)ClONO(2) の形成は,特定の実験室条件下で可能である.
- 理論的洞察は,将来の実験研究と大気モデリングのための基礎を提供します.
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