Esterification

Reid, Erin

doi:10.1021/ie50501a014

Cited by 6 publications

(9 citation statements)

References 28 publications

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“…4. 10,11.HOMOPHENALENYL SYSTEMS (4) According to the PMO theory by Haddon," introduction of homoconjugation across the 10,1l-position of the phenalenyl system is considered to be the most promising candidate for the detection of the homophenalenyl systems. In this connection, we 21 first examined the synthesis and properties of the 1O,1l-homophenalenone (4,lObmethano-8H-benzo] ab ]cyclodecen-8-one) (28) comprised of a 1,6-methano[lO]annulene skeleton.…”

Section: Lntroducnonmentioning

confidence: 99%

Chemistry of the Homophenalenyl Systems

Murata

Nakasuji

1980

Israel Journal of Chemistry

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The perturbational molecular orbital theory by Haddon suggested the interesting possibility that introduction of homoconjugate linkages as a perturbation of the parent phenalenyl systems at 1,2‐, 1,10‐, and 10,11‐positions leads to the most unfavorable, medium, and most favorable energy changes, respectively. In order to prove this prediction, formation of 1,2‐, 1,10‐, and 10,11 ‐homophenalenyl systems were examined by employing the possible precursors such as the ketone 5,29, the alcohol 8, as well as the hydrocarbons 16, 22, and 37. In contrast to the prediction by PMO theory, these systems have no homoaromatic stabilization even in the 10,11 ‐homophenalenyl cation and anion. In further extension of this study, the synthesis of the hitherto unknown parent 8,16‐methano[2.2]metacyclophane‐1,9‐diene 45 has been achieved recently.

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Section: Lntroducnonmentioning

confidence: 99%

Chemistry of the Homophenalenyl Systems

Murata

Nakasuji

1980

Israel Journal of Chemistry

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“…Phenalenyl (PLY), a polycyclic odd-alternant hydrocarbon with a planar D 3h symmetric p-electronic system, is one of the fundamental delocalized neutral radicals. [1,2] Because of its simple and highly symmetric structure, and its intriguing properties in solution and in the crystalline state, it has fascinated researchers for some time. [3,4] It was first proposed by Haddon in 1975 that the phenalenyl has a potential to serve as a building block in molecular conductors.…”

Section: Introductionmentioning

confidence: 99%

“…mp. 132-134 C;1 H NMR (300 MHz, CDCl 3 , 25 C): d 12.03 (s, 1H), 8.69 (d, 1H, was stirred at room temperature. After 1 h, the reaction mixture was filtered and 20 mL of dry methanol was added to the filtrate.…”

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Synthesis, structure and solid state properties of benzannulated phenalenyl based neutral radical conductor

Bag

Itkis

Pal

et al. 2012

J of Physical Organic Chem

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We report the preparation, crystallization, and solid state characterization of a new benzannulated phenalenyl radical; a distinctive feature of this molecular solid is the absence of any well defined conducting pathway(s). In the solid state, the radicals exist as π‐dimer and the requisite C···C contacts between dimers are all larger than the sum of the van der Waals distances. The magnetic susceptibility measurement indicates that, in the solid state, the radical remains paramagnetic and the fraction of Curie spins is 0.55 per molecule. Pressed pellet conductivity measurements indicate a value of σRT = 0.5 × 10−6 S/cm. The conductivity value is comparable with those of similarly packed phenalenyl based neutral radicals. Copyright © 2012 John Wiley & Sons, Ltd.

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“…Although several authors [1][2][3][4][5][6] have reported work on Indian bentonites obtained from different parts of the country, very few refer to their use or application in the ceramic industry. Sen Gupta 1 has studied the chemical composition, b.e.c., sweHing of different Jodhpur bentonites.…”

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confidence: 99%

“…Mukherjee and Sen Gupta 3 showed that those bentonites which proved to be of superior quality for the preparations and treatment of drilling muds, possessed dibasic character and concluded from the nature of their titration curves that Hathi-Ki-Dhani bentonite would be more promising than Bhadres bentonite. Reid and Mitra 4 and Reid 5 reported results of studies on the physico-chemical properties of Jodhpur and Bhimbar bentonites e.g. pH values, distribution of exchangeable cations, setting properties, and gel volume with MgO.…”

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confidence: 99%

A Study of the Physico-Chemical Properties of Bihar Bentonite

Guha

Sen

1961

Transactions of the Indian Ceramic Society

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The physical and chemical properties of Bihar bentonite in comparison to those of a widely used and well known bent'9nite, Wyoming hav1e been studied. Mineralogically the clay was montmorillonitic with some kaolinite. Gypsum, rutile and iron minerals were found to be present in the clay as impurities. The clay was predominantly a calcium-magnesium base bentonite. Due to c9ntamination with gypsum and to the presence of Ca and Mg as exchangeable cations, Bihar bent,onite showed very poor physical properties related to its utilisation in ceramic industries. Preliminary experiments showed that considerable improvement is likely to be effected by suitable treatments.

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Esterification

Cited by 6 publications

References 28 publications

Chemistry of the Homophenalenyl Systems

Chemistry of the Homophenalenyl Systems

Synthesis, structure and solid state properties of benzannulated phenalenyl based neutral radical conductor

A Study of the Physico-Chemical Properties of Bihar Bentonite

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