from trigonal to tetrahedral. Tetrahedral intermediates result from nucleophilic addition to a carbonyl group. The stability of tetrahedral intermediate depends...

Nickel carbonyl (IUPAC name: tetracarbonylnickel) is a nickel(0) organometallic compound with the formula Ni(CO)4. This colorless liquid is the principal...

Borane carbonyl is the inorganic compound with the formula H3BCO. This colorless gas is the adduct of borane and carbon monoxide. It is usually prepared...

attached to a normal flask. Cinnamic acid Dibenzylideneacetone Tetrahedral carbonyl addition compound Lassar-Cohn (1906). Arbeitsmethoden für organisch-chemische...

In the case of directed carbonyl-ene reactions, high levels of regio- and stereo-selectivity have been observed upon addition of a Lewis acid, which can...

(benzyl). Acyl compounds react with nucleophiles via an addition mechanism: the nucleophile attacks the carbonyl carbon, forming a tetrahedral intermediate...

before the addition of the carbonyl compound. The solution becomes cloudy as the Grignard reagent precipitates out. A solution of carbonyl compound is added...

classified following some general principles. Tetrahedral SiO units are common to almost all these compounds, either as discrete structures, or combined...

electrons will adopt tetrahedral geometry with six M-M bonds. Tetrahedral clusters is classified as nido clusters. By addition of 2e, the 60e cluster...

the lithium ion between the N-methoxy oxygen and the carbonyl oxygen, which forms a tetrahedral intermediate that collapses upon acidic work up. Organolithium...

carbonic acid), is an organic compound with chemical formula CO(NH2)2. This amide has two amino groups (–NH2) joined by a carbonyl functional group (–C(=O)–)...

Metal carbonyls are coordination complexes of transition metals with carbon monoxide ligands. Metal carbonyls are useful in organic synthesis and as catalysts...

condensation, an enolate of one ester (1) will attack the carbonyl group of another ester (2) to give tetrahedral intermediate 3. The intermediate collapses, forcing...

oxidation starts with (1) nucleophilic addition of a hydroperoxide ion to the carbonyl carbon, forming a (2) tetrahedral intermediate. The intermediate collapses...

deprotonation of carbonyl (RR'C=O) compounds. Rarely isolated, they are widely used as reagents in the synthesis of organic compounds. Enolate anions are...

Ryoji; Kitamura, Masato (1991). "Enantioselective Addition of Organometallic Reagents to Carbonyl Compounds: Chirality Transfer, Multiplication, and Amplification"...

002. The carboxylic group is the most acidic in organic compounds. As with all carbonyl compounds, the protons on the α-carbon are labile due to keto–enol...

nickel arrangements can be square planar, or tetrahedral. Five coordinated nickel is rarer. Some nickel compounds are ferromagnetic at sufficiently low temperatures...

compared to the analogous carbonyl compounds. The central carbon atom has four bonds to it, and is therefore saturated and has tetrahedral geometry. The term...

variety of compounds, usually with oxidation states +1 and +2, which are often called cuprous and cupric, respectively. Copper compounds, whether organic...

β-unsaturated compounds. The Mukaiyama aldol reaction and the Sakurai reaction refer to the addition of silyl enol ethers and allylsilanes to carbonyl compounds, respectively...

catalysis mechanism. The amine attacks the carbonyl bond and presumably⁠ first forms a transient tetrahedral intermediate, then forms a quaternary acylammonium...

tetraalkyltitanium compounds however are not typically isolable, owing to the large size of titanium and the electron-deficient nature of its tetrahedral complexes...

introduce a formyl group. Here, phenyllithium 1 attacks the carbonyl group of DMF 2, giving tetrahedral intermediate 3. Because the dimethylamide anion is a...

is polymeric. In contrast to classical metal carbonyls, pi-backbonding is not strong in these compounds. Alkenes bind to copper(I), although again generally...

[Co(NH3)6]3+, TiCl4(THF)2. Coordination compounds show a rich diversity of structures, varying from tetrahedral for titanium (e.g., TiCl4) to square planar...

as the near-tetrahedral diphosphine and diarsine complexes [Ag(L–L)2]+. Under standard conditions, silver does not form simple carbonyls, due to the weakness...

stereoisomers convert to a common spiro [4.3] cluster compound. Adding to the transition metal-bismuth carbonyl clusters, the dibismuth clusters with transition...

bis(triphenylphosphine)nickel chloride, exist both in tetrahedral and square planar geometries. The tetrahedral complexes are paramagnetic; the square planar...

Iron pentacarbonyl, also known as iron carbonyl, is the compound with formula Fe(CO)5. Under standard conditions Fe(CO)5 is a free-flowing, straw-colored...