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Carbon trioxide

Carbon trioxide is an unstable oxide of carbon. Three possible isomers of carbon trioxide, with molecular symmetry point groups C s, D 3h, and C 2v, have been most studied by theoretical methods, and the C 2v state has been shown to be the ground ...

Hydrogen polyoxide

Hydrogen polyoxides are chemical compounds that consist only of hydrogen and oxygen atoms, are bonded exclusively by single bonds, and are acyclic. They can, therefore, be classed as hydrogen chalcogenides. The simplest possible stable hydrogen p ...

Colloidal silica

Colloidal silicas are suspensions of fine amorphous, nonporous, and typically spherical silica particles in a liquid phase. The surface of colloidal silica in contact with water is covered by siloxane bonds ≡Si–O–Si≡ and silanol groups ≡Si–OH. Th ...

Mesoporous silica

Mesoporous silica is a mesoporous form of silica and a recent development in nanotechnology. The most common types of mesoporous nanoparticles are MCM-41 and SBA-15. Research continues on the particles, which have applications in catalysis, drug ...

Tetrahydroisoquinoline

Tetrahydroisoquinoline is an organic compound with the chemical formula C 9 H 11 N. Classified as a secondary amine, it is derived from isoquinoline by hydrogenation. It is a colorless viscous liquid that is miscible with most organic solvents. T ...

Reticuline

Reticuline is a chemical compound found in a variety of plants including Lindera aggregata, Annona squamosa, and Ocotea fasciculata. It is based on the benzylisoquinoline structure. Reticuline is one of the alkaloids found in opium, and experimen ...

Opal flower

Lachenalia aloides is a species of flowering plant in the family Asparagaceae, native to the Western Cape of South Africa. It is a bulbous perennial growing to 15–28 cm tall by 5 cm broad, with strap-shaped spotted leaves and fleshy stems bearing ...

Triptan

Triptans are a family of tryptamine-based drugs used as abortive medication in the treatment of migraines and cluster headaches. This drug class was first introduced in the 1990s. While effective at treating individual headaches, they do not prov ...

Metallocene

A metallocene is a compound typically consisting of two cyclopentadienyl anions bound to a metal center in the oxidation state II, with the resulting general formula 2 M. Closely related to the metallocenes are the metallocene derivatives, e.g. t ...

Actinocene

An actinocene is a type of organoactinide metallocene compound that contains an element from the actinide series. The typical structure is a sandwich compound, with two cyclooctatetraenyl dianions bound to an actinide-metal center in the oxidatio ...

Ansa-metallocene

An ansa -metallocene is a type of organometallic compound containing two cyclopentadienyl ligands that are linked by a bridging group such that both cyclopentadienyl groups are bound to the same metal. The link prevents rotation of the cyclopenta ...

Osmocene

Osmocene is an organoosmium compound found as a white solid. It is a metallocene. Osmocene is commercially available. It may be prepared by the reaction of osmium tetroxide with hydrobromic acid, followed by zinc and cyclopentadiene.

Rhodocene

Rhodocene, formally known as bisrhodium, is a chemical compound with the formula radical is found above 150 °C or when trapped by cooling to liquid nitrogen temperatures. At room temperature, pairs of these radicals join via their cyclopentadieny ...

Ruthenocene

Ruthenocene is an organoruthenium compound with the formula 2 Ru. This pale yellow, volatile solid is classified as a sandwich compound and more specifically, as a metallocene.

Sandwich compound

In organometallic chemistry, a sandwich compound is a chemical compound featuring a metal bound by haptic covalent bonds to two arene ligands. The arenes have the formula C n H n, substituted derivatives n) and heterocyclic derivatives. Because t ...

Organoactinide chemistry

Organoactinide chemistry is the science exploring the properties, structure and reactivity of organoactinide compounds, which are organometallic compounds containing a carbon to actinide chemical bond. Like most organometallic compounds, the orga ...

Organoaluminium chemistry

Organoaluminium chemistry is the study of compounds containing bonds between carbon and aluminium bond. It is one of the major themes within organometallic chemistry. Illustrative organoaluminium compounds are the dimer trimethylaluminium, the mo ...

Ethylaluminium sesquichloride

Ethylaluminium sesquichloride, also called EASC, is an industrially important organoaluminium compound used primarily as a precursor to triethylaluminium and as a catalyst component in Ziegler–Natta type systems for olefin and diene polymerizatio ...

Organoantimony chemistry

Organoantimony chemistry is the chemistry of compounds containing a carbon to antimony chemical bond. Relevant oxidation states are Sb and Sb. The toxicity of antimony limits practical application in organic chemistry.

Organobismuth chemistry

Organobismuth chemistry is the chemistry of organometallic compounds containing a carbon to bismuth chemical bond. According to one reviewer, applications rare even though bismuth and bismuth compounds are the least toxic among the heavy metals a ...

Organoboron chemistry

Organoborane or organoboron compounds are chemical compounds of boron and carbon that are organic derivatives of BH 3, for example trialkyl boranes. Organoboron chemistry or organoborane chemistry is the chemistry of these compounds. Organoboron ...

Borinic acid

Borinic acid H 2 BOH, also known as boronous acid, is an oxyacid of boron with formula H 2 BOH. Borinate is the associated anion of boron with formula H 2 BO −, however being a lewis acid the form in basic solution is H 2 B − 2. Borinic acid can ...

Pinacolborane

Pinacolborane is the borane with the formula 4 C 2 O 2 BH. It features a five-membered C 2 O 2 B ring. Owing to the presence of the alkoxide substituents, it is a monomer. It is a colorless liquid prepared by treating borane adducts with pinacol. ...

Trispyrazolylborate

In inorganic chemistry, the trispyrazolylborate ligand, abbreviated Tp −, is an anionic tridentate and tripodal ligand. Trispyrazolylborate refers specifically to the anion −, but the term trispyrazolylborate refers to derivatives substituted at ...

Organochromium chemistry

Organochromium chemistry is a branch of organometallic chemistry that deals with organic compounds containing a chromium to carbon bond and their reactions. The field is of some relevance to organic synthesis. The relevant oxidation states for or ...

Organocobalt chemistry

Organocobalt chemistry is the chemistry of organometallic compounds containing a carbon to cobalt chemical bond. Organocobalt compounds are involved in several organic reactions and the important biomolecule vitamin B 12 has a cobalt-carbon bond. ...

Organocopper compound

Organocopper compounds in organometallic chemistry contain carbon to copper chemical bonds. Organocopper chemistry is the science of organocopper compounds describing their physical properties, synthesis and reactions. They are reagents in organi ...

Organogermanium compound

Organogermanium compounds are organometallic compounds containing a carbon to germanium or hydrogen to germanium chemical bond. Organogermanium chemistry is the corresponding chemical science. Germanium shares group 14 in the periodic table with ...

Tetraethylgermanium

Tetraethylgermanium, abbreviated TEG, is an organogermanium compound with the formula 4 Ge. Tetraethylgermanium is an important chemical compound used in vapour deposition of germanium which is in a tetrahedral shape.

Organoiridium compound

Organoiridium chemistry is the chemistry of organometallic compounds containing a iridium-carbon chemical bond. Organoiridium compounds are relevant to many important processes including olefin hydrogenation and the industrial synthesis of acetic ...

Organoiron chemistry

Organoiron chemistry is the chemistry of iron compounds containing a carbon-to-iron chemical bond. Organoiron compounds are relevant in organic synthesis as reagents such as iron pentacarbonyl, diiron nonacarbonyl and disodium tetracarbonylferrat ...

Tetramesityldiiron

Tetramesityldiiron is an organoiron compound with the formula Fe 2 3) 4. It is a red, air-sensitive solid that is used as a precursor to other iron complexes. It adopts a centrosymmetric structure. The complex is a Lewis acid, forming monomeric a ...

Organolanthanide chemistry

Organolanthanide chemistry is the field of chemistry that studies compounds with a lanthanide-to-carbon bond. Organolanthanide compounds are different from their organotransition metal analogues in the following ways: Chemistry in the 0 oxidation ...

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