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Relevant bibliographies by topics / X-ray crystallography Naphthalene

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Academic literature on the topic 'X-ray crystallography Naphthalene'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "X-ray crystallography Naphthalene"

1

Zhang, Mao-Xi, Nathaniel B. Zuckerman, Philip F. Pagoria, et al. "Mono- and Dinitro-BN-Naphthalenes: Formation and Characterization." Molecules 26, no. 14 (2021): 4209. http://dx.doi.org/10.3390/molecules26144209.

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Mono- and dinitro-BN-naphthalenes, i.e., 1-nitro-, 3-nitro-, 1,6-dinitro-, 3,6-dinitro-, and 1,8-dinitro-BNN, were generated in the nitration of 9,10-BN-naphthalene (BNN), a boron–nitrogen (BN) bond-embedded naphthalene, with AcONO2 and NO2BF4 in acetonitrile. The nitrated products were isolated and characterized by NMR, GC-MS, IR, and X-ray single crystallography. The effects of the nitration on the electron density and aromaticity of BNN were evaluated by B-11 NMR analysis and HOMA calculations.

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2

Rajeswari, M., Pooja Saluja, and Jitender M. Khurana. "A facile and green approach for the synthesis of spiro[naphthalene-2,5′-pyrimidine]-4-carbonitrile via a one-pot three-component condensation reaction using DBU as a catalyst." RSC Advances 6, no. 2 (2016): 1307–12. http://dx.doi.org/10.1039/c5ra22817d.

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A series of novel spiro[naphthalene-2,5′-pyrimidine]-4-carbonitriles were synthesized using 1,3-dimethylbarbituric acid, aldehydes and cyclohexylidene malononitrile in presence of DBU. The structures were confirmed by spectral data and X-Ray crystallography.

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3

Pun, Sai Ho, Chi Kit Chan, Zhifeng Liu, and Qian Miao. "An 80-Carbon Aromatic Saddle Enabled by a Naphthalene-Directed Scholl Reaction." Organic Materials 02, no. 03 (2020): 248–52. http://dx.doi.org/10.1055/s-0040-1716499.

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Synthesis of an unprecedented aromatic saddle consisting of 80 sp2 carbons is enabled by including naphthylene groups in the substrate of the Scholl reaction. The negatively curved polycyclic framework of this aromatic saddle is revealed by the single crystal X-ray crystallography, and its stereodynamics are studied with density functional theory calculations.

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4

Öller, Hans-Jürgen, Paul Kiprof, and Hubert Schmidbaur. "Flexible ein-und zweikernige Aralkyl-und Aralkoxyquecksilberverbindungen als Modelle zum Nachweis von Hg(II)-Hg(II)-W echselwirkungen / Flexible Mono-and Dinuclear Aralkyl and Aralkoxy Mercury Compounds for Detection of Hg (II)-Hg (II) Interactions." Zeitschrift für Naturforschung B 47, no. 3 (1992): 333–43. http://dx.doi.org/10.1515/znb-1992-0306.

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The aralkyl and aralkoxy mercury(II) compounds 1-(chloromercury(II)methyl)naphthalene (1), bis[1-naphthylmethyl]mercury(II) (2), 1-naphthyl(1-naphthylmethyl)mercury(II) (3), 1,8-bis[chloromercury(II)methyl]naphthalene (4), methylmercury(II)-benzylate (5), methylmercury( II)-1-naphthylmethylate (6) and bis[methylmercury(II)]μ-1,8-naphthalenediyl-bismethylate (7) have been prepared and characterized by means of NMRspectroscopy, mass spectrometry and elemental analysis. The molecular structure of compound 2 has been determined by single X-ray crystallography. The unit cell of 2 contains two cryst

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5

Fryzuk, Michael D., Peihua Yu, and Brian O. Patrick. "Synthesis, structure, and reactivity of diamidophosphine complexes of yttrium and the lanthanides." Canadian Journal of Chemistry 79, no. 7 (2001): 1194–200. http://dx.doi.org/10.1139/v01-087.

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The reaction of the dilithiodiamidophosphine ligand precursor PhP(CH2SiMe2NPh)2Li2(THF)2([NPN]Li2(THF)2) with LnCl3(THF)3 (Ln = Y, Sm, Ho, Yb, Lu; THF = tetrahydrofuran) in refluxing toluene generates the mononuclear complexes [NPN]LnCl(THF) in good yield. The molecular structures have been shown to be five-coordinate in the solid state and in solution. Attempts to prepare alkyl derivatives have only met with partial success; the reaction of MeMgCl with [NPN]YCl(THF) generates the partially characterized mixed-metal derivative [NPN]YMe2MgCl. The reaction with LiAlH4 results in complete ligand

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6

Xu, Yun, Linglei Jiang, and Xuefeng Mei. "Supramolecular structures and physicochemical properties of norfloxacin salts." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 70, no. 4 (2014): 750–60. http://dx.doi.org/10.1107/s2052520614011718.

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Seven new molecular salts of norfloxacin (1-ethyl-6-fluoro-4-oxo-7-piperazin-1-yl-1H-quinoline-3-carboxylic acid; abbreviated as NF) with various organic acids (adipic acid, mucic acid,o-OH-benzoic acid,m-OH-benzoic acid,p-OH-benzoic acid, naphthalene-1, 5-disulfonic acid and naphthalene-2-sulfonic acid) were synthesized and their crystal structures were determined by X-ray crystallography. Supramolecular structures and reccurring packing patterns are discussed to understand the influence of non-covalent interactions in determination of the crystal packing and hydrate inclusion. The formation

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7

Cambie, Richard C., Carrie C. Liu, Clifford E. F. Rickard, and Peter S. Rutledge. "Skeletal Rearrangements of Ring C Aromatic Diterpenoids." Australian Journal of Chemistry 51, no. 7 (1998): 605. http://dx.doi.org/10.1071/c97198.

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The structure of a naphthalene derivative obtained by rearrangement of 13-methoxytotara-5,8,11,13-tetraen-7α-ol (2) has been revised to 5-(5′-isopropyl-6′-methoxy-2′-methyl-1′-naphthyl)-2-methylpent-2-ene (7). A minor oxidation product of 13-methoxytotara-8,11,13-triene (4) has been identified as 4-methoxy-3,3-dimethyl-7-(1′,3′,3′-trimethyl-2′-oxocyclohexanyl)isobenzofuran-1(3H)-one (16) and its structure confirmed by X-ray crystallography. Methyl 12-methoxypodocarpa-8,11,13-trien-19-oate (12) has been converted into an intermediate used in the synthesis of the linear diterpenoid umbrosone [3-

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8

Andric, Goja, John F. Boas, Alan M. Bond, et al. "Spectroscopy of Naphthalene Diimides and Their Anion Radicals." Australian Journal of Chemistry 57, no. 10 (2004): 1011. http://dx.doi.org/10.1071/ch04130.

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Naphthalene diimides 1–4 having different N,N-disubstitution undergo single electron reduction processes either chemically or electrochemically to yield the corresponding radical anion in high yield. This study concentrates on 1, bearing pentyl side chains connected through the diimide nitrogens, and compares the results obtained against those bearing isopropyl, propargyl, and phenylalanyl side chains. Compound 1 exhibits mirror image absorption and fluorescence in the near-UV region in CH2Cl2 and dimethylformamide that is typical of monomeric N,N-dialkyl-substituted naphthalene diimides. In t

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9

Wannebroucq, Amélie, Andrew P. Jarmyn, Mateusz B. Pitak, Simon J. Coles, and John D. Wallis. "Reactions and interactions between peri-groups in 1-dimethylamino-naphthalene salts: an example of a “through space” amide." Pure and Applied Chemistry 88, no. 4 (2016): 317–31. http://dx.doi.org/10.1515/pac-2015-1103.

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Abstract8-Dimethylaminonaphthalene-1-carbaldehyde reacts readily at 0°C with benzoyl or pivaloyl chloride by O-acylation and formation of a N–C bond (1.566(2)–1.568(3) Å) between the peri-substituents to give a salt. The reaction is promoted by electron donation from the dimethylamino group to the carbonyl group, akin to the properties of an amide. In contrast, the corresponding methyl ester and N,N-diisopropylamide react with acid in ether by protonation of the dimethylamino group and formation of a hydrogen bond to the carbonyl group, while under similar conditions the N,N-dimethylamide unde

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10

Collins, DJ, GD Fallon, and CE Skene. "Synthesis of 6-Methoxy-2-methyl-2-[(1'-methyl-2',5'-dioxocyclopentyl)methyl]-3,4-dihydro-naphthalen-1(2H)-one: Its Novel Base-Catalyzed Rearrangement to a Hydrophenanthrene Keto Acid." Australian Journal of Chemistry 47, no. 4 (1994): 623. http://dx.doi.org/10.1071/ch9940623.

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Reaction of 2-dimethylaminomethyl-6-methoxy-3,4-dihydronaphthalen-1(2H)-one (7) with 2-methylcyclopentane-1,3-dione gave 64% of 6-methoxy-2-[(1′-methyl-2′,5′-dioxocyclopentyl)-methyl]-3,4-dihydronaphthalen-1(2H)-one(6a), which with 1 equiv. of ethylene glycol in refluxing benzene in the presence of 4-toluenesulfonic acid yielded a diastereomeric mixture of the 2′,2̶-ethylenedioxy derivatives (13a,b); the major diastereomer (13a) was shown to have 1′SR,2RS stereochemistry by X-ray crystallography. With an excess of ethylene glycol and prolonged reflux the triketone (6a) underwent aldol cyclizat

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Dissertations / Theses on the topic "X-ray crystallography Naphthalene"

1

Fuller, Amy L. "Applications of X-ray crystallography : studies into the structural perturbations of peri-substituted naphthalene derivatives /." St Andrews, 2009. http://hdl.handle.net/10023/826.

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2

Fuller, Amy L. "Applications of X-ray crystallography : studies into the structural perturbations of peri-substituted naphthalene derivatives." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/826.

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The majority of research in this thesis uses X-ray crystallography to investigate the structural features of peri-substituted naphthalene compounds. X-ray crystallography is introduced in chapter one, followed by a discussion on modes of distortion peri-substituted naphthalene derivatives can undergo, in chapter two. In chapter three, compounds having non-bonded -SPh and -EPh (E = S, Se, or Te) peri-substituents are compared. These similar compounds react differently when oxidized with bromine. The oxidation products are used to discuss a recently proposed mechanism and a more specific mechani

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