Browsing by Author "Jones, W."
Now showing items 1-14 of 14
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Crystal and molecular structure of 1,3-dibenzylcyclobutane-2,4-bis(2′-spiro-(5′-p-chloro)-benzylcyclopentanone): Product of a single-crystal→single-crystal reaction
Jones, W.; Theocharis, Charis R. (1984)The title compound is the product of the photo-induced solid-state reaction of 2-(p-chloro)-benzyl-5-benzylidenecyclopentanone, a reaction which is shown to occur in a single-crystal to single-crystal fashion. The cell ...
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Article
Crystal and molecular structures of 2-(p-methylbenzyl)- and 2-(p-chlorobenzyl)-5-(p-bromobenzylidene)cyclopentanone. Influence of chloro and methyl substitution on solid-state reactivity
Theocharis, Charis R.; Jones, W.; Motevalli, M.; Hursthouse, M. B. (1982)The crystal structures of the title compounds have been determined as part of an investigation into the factors which may influence the solid-state reactivity of benzylidene cyclopentanones. The p-methyl derivative, which ...
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Crystal engineering of photodimerizable cyclopentanones. Comparison of chloro and methyl substitution as solid-state steering groups
Jones, W.; Ramdas, Subramaniam; Theocharis, Charis R.; Thomas, John M.; Thomas, N. W. (1981)The interchangability of chloro and methyl groups, insofar as solid-state structure and photoreactivity are concerned, is examined in a family of three pairs of closely related molecules derived from the same parent, ...
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Article
Crystal structure of 3,3-(p-N, N-dimethylaminophenyl)-6-N, N-dimethylaminophthalide, (crystal-violet lactone)
Theocharis, Charis R.; Jones, W. (1984)The title compound is C26H29N302, Mr,=415.54, monoclinic, P21/n, a=12.228(1), b=17.385(2), c=11.786(1) Å, Vc=2308.7 Å3, Z=4, Dx=1.19 Mg m-3, μ=5.29 cm-1, F(000)=888. Final R=0.046 for 2301 independent reflections. Three ...
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Article
Engineering organic crystals so as to control the photoreactivity of the reactants and the crystallinity of the products
Jones, W.; Nakanishi, H.; Theocharis, Charis R.; Thomas, John M. (1980)A family of organic molecular crystals based on benzylidenecyclopentanone provides a basis for an assessment of topotactic and topochemical photoreactivity.
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Phonon spectroscopy of photochemical reactions in organic solids: Photodimerization of 2-benzyl-5-benzylidenecyclopentanone and photopolymerization of 2,5-distyrylpyrazine
Swiatklewicz, J.; Eisenhardt, G.; Prasad, P. N.; Thomas, John M.; Jones, W.; Theocharis, Charis R. (1982)The nature of the photoreactions in 2-benzyl-5-benzylidenecyclopentanone (abbreviated as BBCP) and 2,5-distyrylpyrazine (abbreviated as DSP) is investigated by a combination of Raman spectroscopy and electronic spectroscopy. ...
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Reactions of platinum(II) acetylides with organolithium compounds: formation of lithium-bridged dinuclear platinum(II) complexes and of triorganoplatinate(II) complexes: Crystal structure of the complex [Pt2(C≡CPh)4(PEt3)2(Bu n)2(μ-Li)2]
Sebald, A.; Wrackmeyer, B.; Theocharis, Charis R.; Jones, W. (1984)Platinum(II) acetylides of the type trans-[Pt(C≡CR1)2(PEt3)2] (1) (R1 = Me, Bun, or Ph) lose one equivalent of PEt3 on treatment with organolithium reagents LiR2 (2) (R2 = Bun, But, or Ph) in hydrocarbon solvents to give ...
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Article
Single-crystal study of the solid-state polymerisation of butadiynylenebis-(m-acetamidobenzene)
Nakanishi, H.; Matsuda, H.; Kato, M.; Theocharis, Charis R.; Jones, W. (1986)The crystal structure of the title compound is reported
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Article
The solid-state photodimerisation of 2,5-dibenzylidenecyclopentanone (DBCP): A topochemical reaction that yields an amorphous product
Theocharis, Charis R.; Jones, W.; Thomas, John M.; Motevalli, M.; Hursthouse, M. B. (1984)When 2,5-dibenzylidenecyclopentanone (DBCP) is irradiated by u.v. light in the crystalline state the principal product formed by a [2 + 2] dimerisation is 2,9-dibenzylidene-6,12-diphenyldispiro[4.1.4.1]-dodecane-1,8-dione (DDBCP)
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Article
Structural mimicry and the photoreactivity of organic solids
Jones, W.; Theocharis, Charis R.; Thomas, John M.; Desiraju, G. R. (1983)Molecules that are photostable in the solid state can be rendered photoactive if, by burial within crystals of closely analogous monomers, they can be made to mimic the molecular conformation of the latter
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Structure of a 'doped' diacetylene that is polymerisable in the solid state
Theocharis, Charis R.; Nakanishi, H.; Matsuda, H.; Jones, W.; Thomas, John M.; Kato, M. (1985)The crystal structure has been determined of a silver perchlorate-doped diacetylene derivative which yields upon γ-ray irradiation a semi-conducting polymer product
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Article
Study of the crystal and molecular structure of the 9-cyanoanthracene trans dimer and of its monomerisation
Theocharis, Charis R.; Jones, W. (1985)The structure of the 9-cyanoanthracene trans dimer (9-CNAD) has been solved by direct methods [P1, a = 10.146(1) Å, b = 17.785(1) Å, c = 11.501(1) Å, α = 92.95(1)°, β = 95.59(1)°, γ = 89.82(1)°, Z = 4]. No evidence for ...
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The thermally induced phase transition of crystalline 9-cyanoanthracene dimer: A single crystal study
Theocharis, Charis R.; Jones, W. (1984)The crystal structure of the title compound is reported, and single crystal X-ray techniques are used to show that at temperatures close to the first exothermic peak of the title compound calorigram, a phase transition ...
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Article
An unusual photo-induced conformational polymorphism: A crystallographic study of bis(p-methoxy)-trans-stilbene
Theocharis, Charis R.; Jones, W.; Rao, C. N. R. (1984)A novel example of a photo-induced single-crystal to single-crystal phase transformation is described for the title compound