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Aluminium(I) Nucleophiles
Aluminium(I) nucleophiles are a group of inorganic and organometallic nucleophilic compounds containing at least one aluminium metal center in the +1 oxidation state with a lone pair of electrons strongly localized on the aluminium(I) center. Prevalent aluminium(III) compounds such as aluminium trihalides ( AlCl3, AlBr3, AlI3) are regularly employed in organic synthesis as electrophiles or Lewis acids. However, upon reducing of the metal center, aluminium(I) compounds may gain a lone pair which confers them nucleophilic character. While many aluminium(I) compounds are thermodynamically unstable due to their low oxidation state and act as good reducing agents, recent synthetic developments allowed for the isolation of stable aluminium(I) compounds. The first example of an isolable aluminium(I) compound was the tetrameric (AlCp*)4 (Cp* = pentamethylcyclopentadienyl) reported by Schnöckel and coworkers in 1991, while the first monomeric aluminium(I) compound was isolated on a β- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inorganic Compound
An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bondsthat is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as ''inorganic chemistry''. Inorganic compounds comprise most of the Earth's crust, although the compositions of the deep Mantle (geology), mantle remain active areas of investigation. All allotropes (structurally different pure forms of an element) and some simple carbon compounds are often considered inorganic. Examples include the allotropes of carbon (graphite, diamond, buckminsterfullerene, graphene, etc.), carbon monoxide , carbon dioxide , carbides, and salt (chemistry), salts of inorganic anions such as carbonates, cyanides, cyanates, thiocyanates, isothiocyanates, etc. Many of these are normal parts of mostly organic systems, including organisms; describing a chemical as inorganic does not necessarily mean that it cannot occur within life, living things. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |