銅 (I) とパラジウム (II) をテンプレートと組み立てセンターとして使用した [2]ケイテナンの定量形成: 絡み合いの経路とスレッドのアプローチ
Christiane Dietrich-Buchecker1, Benoît Colasson, Makoto Fujita
1Laboratoire de Chimie Organo-Minérale, UMR 7513 du CNRS, Université Louis Pasteur, Faculté de Chimie, 4, Rue Blaise Pascal, 67070 Strasbourg Cedex, France. sauvage@chimie.u-strasbg.fr
Journal of the American Chemical Society
|May 8, 2003
まとめ
研究者は,テンプレートと自己組み立てを組み合わせて,銅 (I) とパラジウム (II) の金属中心を使用した新しい調整カテネンを作成しました. これらの方法は,高度な材料アプリケーションのための複雑な相互接続された分子を効率的に合成します.
科学分野:
- 超分子化学 超分子化学
- 協調化化学について
- オーガニック・シンセシス オーガニック・シンセシス
背景:
- 移行金属媒介型テンプレートと自己組み立ては,相互に繋がった分子を合成するための重要な戦略です.
- 座標連鎖は,ユニークな構造的,機能的特性を有しています.
研究 の 目的:
- フェナントロリン-ピリジンのリガンドを使用して新しい調整カテネンを開発する.
- 2つの異なる合成経路の探索と最適化: 絡み合いとスレッド.
主な方法:
- 新型フェナントロリン-ピリジンリガンド (化合物1) の合成.
- テンプレートに銅 ((I) と,自己組み立て/剪定にパラジウム ((II) を使用する.
- 絡み合いの経路を調査する: Cu(I) テンプレート,その後 Pd(II) クリップ.
- 糸付けのアプローチを調査する: Cu (I) テンプレート型の糸付けに続いて Pd (II) クリップ.
主要な成果:
- 絡み合いの経路経由でCuPd(2) カテネン18の定量的形成.
- ヘテロカテネン20のスレッドアプローチによる合成が成功しました.
- Cu (I) テンプレートとPd (II) 誘導式自己組み立ての効率が証明されている.
結論:
- 組み合わされたテンプレートと自己組み立てのアプローチは,新しい調整カテネネスへの効率的な経路を提供します.
- 絡み合いとスレッドの両方の方法は,複雑な相互接続された構造物の構築に有効です.
- この研究は,超分子合成におけるCu (I) とPd (II) の汎用性を強調しています.
関連する概念動画
02:37Metallic Solids
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
03:45Formation of Complex Ions
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
02:54Coordination Compounds and Nomenclature
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
02:51Metal-Ligand Bonds
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
02:57Coordination Number and Geometry
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
02:34Structural Isomerism
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...