![The Synthesis of [Sn10(Si(SiMe3)3)4]2- Using a Metastable Sn(I) Halide Solution Synthesized via a Co-condensation Technique](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F54498.jpg&w=3840&q=50)
銀 (((I) 1,3-ブタジネダイドおよびC4 (((2-) ディアニオンを含む2つの関連銀 (((I) ダブル塩
1Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, PR China.
Journal of the American Chemical Society
|June 4, 2004
まとめ
研究者らは,爆発性物質である銀炭化物 (Ag2C4) を合成した. この新しいシルバーカーバイドは,端末原子がシルバー原子で覆われ,水素化された二重塩の中でユニークな調整モードを示しています.
科学分野:
- 無機化学 無機化学とは
- マテリアルサイエンス 材料科学
- 固体化学 固体化学
背景:
- 銀炭化物は,銀と炭素の化合物であり,ユニークな性質を持っています.
- よく知られている銀炭化物,Ag2C2は爆発性があり,機械的な衝撃に敏感です.
- シルバーカービッドの特徴は,その安定性と反応性を理解するために重要である.
研究 の 目的:
- 新しい銀炭化物,Ag2C4.4.を合成し,完全に特徴づけること.
- 水素化された二重塩におけるC42-ダイアニオンの調整化学を調査する.
- Ag2C4の性質を,既知の銀炭化物,Ag2C2.2と比較してみましょう.
主な方法:
- Ag2C4の合成は,浅い灰色の粉末として行われます.
- Ag2C4の特徴は,その爆発性 (130°C) と機械的衝撃に対する感度を含む.
- 水素化された二重塩 (Ag2C4.6AgNO3.nH2O) の結晶分析により,C42-dianion.ionの調整モードを決定する.
主要な成果:
- Ag2C4は,金属銀で汚染されているものの,成功して合成されました.
- 合成されたAg2C4は,高温で爆発性があり,機械的な衝撃に敏感であることが判明しました.
- 水素化された二重塩では,C42-ダイアニオンは前例のないmu8協調モードを示し,端末原子は4つの銀 (((I)) 原子とpi相互作用で封じられている.
結論:
- Ag2C4は,完全に特徴づけられた第2のシルバー炭化物であり,Ag2C2.2に似た危険な性質を示しています.
- この研究は,C42-ダイアニオンの新しいmu8調整モードを明らかにし,金属炭化水素相互作用の理解を広げています.
- 発見は,特にエネルギー銀化合物の合成と性質に関する無機材料の分野に寄与しています.
関連する概念動画
02:48Ionic Bonding and Electron Transfer
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
02:54Lewis Structures of Molecular Compounds and Polyatomic Ions
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
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...
02:34Structural 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...