Cyclooctatetraenyl dianion

Author: tkok

August undefined, 2024

In chemistry, the cyclooctatetraenide anion or cyclooctatetraenide, more precisely cyclooctatetraenediide, is an aromatic species with a formula of [C8H8] and abbreviated as COT . It is the dianion of cyclooctatetraene. Salts of the cyclooctatetraenide anion can be stable, e.g., Dipotassium cyclooctatetraenide or disodium cyclooctatetraenide. More complex coordination compounds are kno… WebCyclooctatetraene is reduced by alkali metals to a dianion. [Pg.741] It is also possible to add electrons to cyclooctatetraene by treating it with alkali metals and a dianion results. …

10.1016/S0020-1693(02)01479-2 DeepDyve

WebReductive trapping of the cyclooctatetraenyl dianion (COT 2−) by treatment of [Sm(DippForm) 2 (thf) 2] (DippFormH = N,N′-bis(2,6-diisopropylphenyl)formamidine; thf = tetrahydrofuran) with 1,3,5,7-cyclooctatetraene (C 8 H 8) in toluene yields an inverse sandwich dinuclear complex [Sm 2 (DippForm) 4 (COT)] (1), but … WebSep 1, 2024 · Since the cyclooctatetraenide dianion is one of the most important ligands in the modern organometallic chemistry of alkali, alkaline earth, transition, lanthanide and … prefab metal automotive brackets

Covalently-linked cyclooctatetraenyl dianions as …

WebThe blood-red plutonocene complex Pu (1,3-COT′′) (1,4-COT′′) (4; COT′′=η8-bis (trimethylsilyl)cyclooctatetraenyl) has been synthesized by oxidation of the anionic sandwich complex Li [Pu... Web184. Which of the following statement is not true about homolytic cleavage? In homolytic cleavage the movement of a single electron takes place instead of an electron pair. WebAug 29, 2013 · The cyclooctatetraenyl dianion (C8H8 2−) -conjugated system forms a stable complex system with alkali and some transition metals. The results of vibrational … scorpions group cartel

Simple, inexpensive synthesis of dipotassium cyclooctatetraenide, …

Which of the following are classified as aromatic? - Toppr Ask

Webcycloheptatriene dianion contains 8 π electrons (4n) and will be antiaromatic if the ring is flat. If the ring is not flat, then the compound will be non-aromatic. 4. Cyclooctatetraene readily reacts with potassium metal to form a dianion. Discuss the electronic structure and geometry of this dianion and explain why it is formed so readily. COT readily reacts with potassium metal to form the salt K2COT, which contains the dianion C 8H 8. The dianion is planar, octagonal, and aromatic with a Hückel electron count of 10. Cyclooctatetraene forms organometallic complexes with some metals, including yttrium, lanthanides, and actinides. The … See more 1,3,5,7-Cyclooctatetraene (COT) is an unsaturated derivative of cyclooctane, with the formula C8H8. It is also known as [8]annulene. This polyunsaturated hydrocarbon is a colorless to light yellow flammable liquid at … See more Richard Willstätter's original synthesis (4 consecutive elimination reactions on a cyclooctane framework) gives relatively low yields. Reppe's synthesis of cyclooctatetraene, which involves treating acetylene at high pressure with a warm mixture of nickel … See more The π bonds in COT react as usual for olefins, rather than as aromatic ring systems. Mono- and polyepoxides can be generated by reaction of COT with peroxy acids or … See more 1,3,5,7-Cyclooctatetraene was initially synthesized by Richard Willstätter in Munich in 1905 using pseudopelletierine as the starting material and the Hofmann elimination as the key transformation: Willstätter noted that the compound did not exhibit the … See more Early studies demonstrated that COT did not display the chemistry of an aromatic compound. Then, early electron diffraction experiments concluded that the C-C bond distances were … See more Cyclooctatetraene has been isolated from certain fungi. See more • Barrelene, structural isomer of cyclooctatetraene • Benzene • Cyclobutadiene • Heptafulvene, structural isomer of cyclooctatetraene See more scorpions greeceWebCyclooctatetraene (COT) is a nonaromatic 4n π-conjugated system with a non-planar tub-shaped geometry and potential energy surfaces at the ground state. [ 1] … prefab metal arch-style buildings

"WebThe U.S. Department of Energy's Office of Scientific and Technical Information " - Cyclooctatetraenyl dianion

10.1016/S0020-1693(02)01479-2 DeepDyve

Covalently-linked cyclooctatetraenyl dianions as …

Cyclooctatetraenyl dianion

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