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Disiamylborane (bis(1,2-dimethylpropyl)borane) is an organoborane with the formula [((CH 3) 2 CHCH(CH 3)) 2 BH] 2 (abbreviation: Sia 2 BH). It is a colorless waxy solid that is used in organic synthesis for hydroboration–oxidation reactions. Like most dialkyl boron hydrides, it has a dimeric structure with bridging hydrides.
The [BAr F 4] − anion with four fluorinated aryl groups distributed tetrahedrally about a central boron atom. Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate is an anion with chemical formula [{3,5-(CF 3) 2 C 6 H 3} 4 B] −, which is commonly abbreviated as [BAr F 4] −, indicating the presence of fluorinated aryl (Ar F) groups.
-bis, an IUPAC numerical multiplier for compound or complex features, meaning 2; A colloquial name for N,N'-Methylenebisacrylamide; Barratt Impulsiveness Scale, in psychology; Behavioural Inhibition System, a brain-behavioral systems in reinforcement sensitivity theory; BIS monitor or bispectral index, to assess the depth of anaesthesia
The numbers 200-900 would be confused easily with 22 to 29 if they were used in chemistry. khīlioi = 1000, diskhīlioi = 2000, triskhīlioi = 3000, etc. 13 to 19 are formed by starting with the Greek word for the number of ones, followed by και (the Greek word for 'and'), followed by δέκα (the Greek word for 'ten').
Bis(cyclooctatetraenyl) complexes: M(C 8 H 8) 2, such as U(C 8 H 8) 2 and Th(C 8 H 8) 2 (both actinocenes). Metal– carborane complexes (metallacarboranes), a very large and diverse family in which main-group or transition metal ions are coordinated to carborane ligands to form polyhedral cages ranging in size from 6 to 15 vertices.
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
Bis(trimethylsilyl) sulfide is the chemical compound with the formula ((CH 3) 3 Si) 2 S. Often abbreviated ( tms ) 2 S, this colourless, vile-smelling liquid is a useful aprotic source of "S 2− " in chemical synthesis.
As a chelating ligand, 1,1-bis(diphenylphosphino)methane forms a four-membered ring with the constituents MP 2 C. The ligand promotes the formation of bimetallic complexes that feature five-membered M 2 P 2 C rings. In this way, dppm promotes the formation of bimetallic complexes. One such example is the dipalladium chloride, Pd 2 Cl 2 (dppm) 2.