Publication

Synthesis and structural elucidation of a "free" phosphinoamide anion

2003
Journal Articles

Abstract

The reaction of the aminophosphane C6H4(o-CN)NHPPh2 with elemental potassium in the presence of 18-crown-6 affords the phosphinoamide-containing complex [C6H4(o-CN)N-PPh2(THF)(18-Crown-6)K] which has been fully characterised in solution and the solid state. The potassium cation interacts with the nitrile substituent group and crown, but does not interact with the P-N bond. The anion appears to be considerably more reactive than related anions in which the cation interacts with the P-N unit, as demonstrated by the reaction with O-2/H2O which affords [Ph2P(:O)OK(18-Crown-6)] and C6H4(o-CN)NH2. A co-crystal containing these two products was obtained and the structure has been elucidated by single-crystal X-ray diffraction analysis. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.

Official source

https://infoscience.epfl.ch/entities/publication/de5d12ce-2cbf-410e-929b-288514856fb1

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2003
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/de5d12ce-2cbf-410e-929b-288514856fb1

About this result

Related concepts (32)

Potassium

Potassium is the chemical element with the symbol K (from Neo-Latin kalium) and atomic number 19. It is a silvery white metal that is soft enough to easily cut with a knife. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure. It was first isolated from potash, the ashes of plants, from which its name derives. In the periodic table, potassium is one of the alkali metals, all of which have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge (which combines with anions to form salts).

Ion

An ion (ˈaɪ.ɒn,_-ən) is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by convention. The net charge of an ion is not zero because its total number of electrons is unequal to its total number of protons. A cation is a positively charged ion with fewer electrons than protons while an anion is a negatively charged ion with more electrons than protons.

Potassium chlorate

Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO3. In its pure form, it is a white crystalline substance. After sodium chlorate, it is the second most common chlorate in industrial use. It is a strong oxidizing agent and its most important application is in safety matches. In other applications it is mostly obsolete and has been replaced by safer alternatives in recent decades.

Related publications (2)

Synthesis and structural elucidation of a "free" phosphinoamide anion

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A thallium coated dianion: trigonal bipyramidal [F2Al(OR)3]2- coordinated to three Tl+ cations in the ion pair [Tl3F2Al(OR)3]+[Al(OR)4]- [R = CH(CF3)2]

Structure and dynamics of lanthanide ions and lanthanide complexes in solution