Publication

Synthesis and structures of sodium phenylhydrazides

1997
Journal Articles

Abstract

Monomeric LiPhNNPhSiMe3.2Et2O was obtained by deprotonation of PhHNNPhSiMe3 with BuLi in the presence of Et2O. Reaction of NaN(SiMe3)2 with PhHNN(SiMe3)2 in a C6H6/THF mixt. provided monomeric NaPhNN(SiMe3)2.3THF, or NaPhNN(SiMe3)2.THF using a small amt. of THF. THF can be replaced by Et2O or tBuOMe to give 1:1 solvates. These assoc., forming chains in the solid state via hn coordination (n = 2, 3) of their Ph groups to the Na centers of adjacent mols. In contrast, not only deprotonation but also desilylation occurs on reaction of NaN(SiMe3)2 with PhHNNPhSiMe3 or of NaNH2 with Me3SiHNNPh2. The latter reaction results in the formation of hexameric (NaHNNPh2)6, which adopts a face-sharing double-cubane structure. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/a5c1e57f-3d5f-4d03-a00f-bd2f6127bb5a

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1997
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/a5c1e57f-3d5f-4d03-a00f-bd2f6127bb5a

About this result

Related concepts (11)

Chemical reaction

A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.

Reaction rate

The reaction rate or rate of reaction is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time. Reaction rates can vary dramatically. For example, the oxidative rusting of iron under Earth's atmosphere is a slow reaction that can take many years, but the combustion of cellulose in a fire is a reaction that takes place in fractions of a second.

Chain reaction

A chain reaction is a sequence of reactions where a reactive product or by-product causes additional reactions to take place. In a chain reaction, positive feedback leads to a self-amplifying chain of events. Chain reactions are one way that systems which are not in thermodynamic equilibrium can release energy or increase entropy in order to reach a state of higher entropy. For example, a system may not be able to reach a lower energy state by releasing energy into the environment, because it is hindered or prevented in some way from taking the path that will result in the energy release.

Related publications (2)

Synthesis and structures of sodium phenylhydrazides

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