構造と多核固体NMRは,高度に二重断裂性の鉛・金・シアン化物協調ポリマーである
Michael J Katz1, Pedro M Aguiar, Raymond J Batchelor
1Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada V5A 1S6.
Journal of the American Chemical Society
|March 16, 2006
まとめ
この研究では,新しい協調ポリマー,Pb(H2O) [Au(CN) ]2を合成し,2Dスラブ構造と鉛中心のアニソトロピーによるユニークな光学特性を明らかにしました. 脱水により構造と対称性が変化し,固体状態のNMRで確認されています.
科学分野:
- マテリアルサイエンス 材料科学
- 固体化学 固体化学
- クリスタログラフィーです.
- スペクトロスコーピーは,スペクトロスコーピーを用います.
背景:
- コーディネーションポリマーは調節可能な構造と特性を提供します.
- 鉛 (II) と金 (I) シアン酸は,興味深い超分子組成を形成することが知られている.
- 構造と性質の関係を理解することは,材料設計において極めて重要です.
研究 の 目的:
- 鉛 (II) と金 (I) シアン化物を含む新しい調整ポリマーを合成し,特徴づけること.
- 脱水後の構造変化を調査する.
- 合成材料の光学特性,特に二重断裂性を探求する.
主な方法:
- KAu (CN) 2とPb (NO3) 2の反応によるPb (H2O) [Au (CN) ]2の合成
- 単結晶X線 difrakcionは,水素化された形態の構造的決定のための.
- 固体核磁共振 (NMR) スペクトロスコーピー (13C,15N,1H,207Pb) は,水素化および脱水した形態の両方に適用されます.
- X線粉の difrakcionと二重断裂の測定. X線粉の difraktionと二重断裂の測定. X線粉の difraktionと二重断裂の測定. X線粉の difraktionと二重断裂の測定. X線粉の difraktionと二重断裂の測定.
主要な成果:
- 水素化合物Pb(H2O) [Au(CN) ]2は,2次元スラブを形成する1次元鎖を示し,2次元スラブを構成する2次元スラブを構成する2次元スラブを構成する2次元スラブを構成する.
- 175°Cでの脱水は,変化した対称性と歪んだ正方形プリズマティック鉛 (II) 環境を提案した微結晶Pb[Au(CN) 2) 2を生成します.
- 水素化された形態は,アニゾトロプ的2Dスラブと並べられたCN結合に起因する有意な二重断裂 (7.0 x 10^-2) を表しています.
結論:
- 調整ポリマーPb(H2O) [Au(CN) ]2は,顕著な光学アニソトロピーを持つユニークな2D層構造を有しています.
- 脱水は構造と対称性の変化につながり,固体NMRで証明されています.
- この材料の大きな二重断層性は,光学材料における潜在的な応用を示唆しています.
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