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Showing 1 to 12 of 252 entries
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Two-photon two-color nuclear magnetic resonance.

The Journal of chemical physics

Eles PT, Michal CA.
PMID: 15549891
J Chem Phys. 2004 Nov 22;121(20):10167-73. doi: 10.1063/1.1808697.

Two-photon excitation has recently been demonstrated to be a practical means of exciting nuclear magnetic resonance (NMR) signals by radio-frequency (rf) irradiation at half the normal resonance frequency. In this work, two-photon excitation is treated with average Hamiltonian theory...

Stoichiometry-dependent structures: an X-ray and neutron single-crystal diffraction study of the effect of reaction stoichiometry on the crystalline products formed in the potassium-cyanurate system.

Acta crystallographica. Section B, Structural science

Nichol GS, Clegg W, Gutmann MJ, Tooke DM.
PMID: 16983161
Acta Crystallogr B. 2006 Oct;62:798-807. doi: 10.1107/S0108768106025171. Epub 2006 Sep 18.

Reaction of cyanuric acid (C(3)H(3)N(3)O(3); neutral form CYH(3); anionic form CYH_2;-; dianionic form CYH(2-)) with K(2)CO(3) or KOH in aqueous solution gave three different crystalline products, according to the reaction stoichiometry used. The structures of two products were easily...

4-{N-[2-(1,3-Dioxo-1,3-dihydroisoindol-2-yl)-3-phenylpropionyl]anilino}-1-phenethylpiperidinium chloride methanol disolvate.

Acta crystallographica. Section E, Structure reports online

Petrov RR, Vardanyan RS, Nichol GS, Carducci MD, Ma SW, Lai JY, Hruby VJ.
PMID: 17268579
Acta Crystallogr Sect E Struct Rep Online. 2006 Jul;62(7):o2815-o2816. doi: 10.1107/S1600536806021817.

The structure of the title compound, a fentanyl derivative with formula C(36)H(36)N(3)O(3) (+)·Cl(-)·2CH(3)OH, crystallizes as a racemic mixture. The organic cation has an extended conformation and the structure displays O-H⋯O, O-H⋯Cl and N-H⋯Cl hydrogen bonding.

Polymorphism in an unexpected caesium complex of 5-hydroxyhydurilic acid.

Acta crystallographica. Section C, Crystal structure communications

Nichol GS, Clegg W.
PMID: 16210761
Acta Crystallogr C. 2005 Oct;61:m459-62. doi: 10.1107/S0108270105029318. Epub 2005 Sep 30.

Vigorous reaction of barbituric acid with caesium hydroxide in water resulted in an unexpected coupling product, 5-hydroxyhydurilic acid, complexed to caesium, giving poly[[caesium-mu5-5-hydroxyhydurilato] hemihydrate], {[Cs(C8H5N4O7)].0.5H2O}n. This was obtained in two different polymorphic forms, depending on the method of crystal...

A variable-temperature study of a phase transition in barbituric acid dihydrate.

Acta crystallographica. Section B, Structural science

Nichol GS, Clegg W.
PMID: 16041097
Acta Crystallogr B. 2005 Aug;61:464-72. doi: 10.1107/S0108768105017258. Epub 2005 Jul 19.

The crystal structure of barbituric acid dihydrate (C4H4N2O3*2H2O) has twice been reported as orthorhombic, space group Pnma, with all atoms (except for CH(2) H atoms) lying on the mirror plane [Al-Karaghouli et al. (1977). Acta Cryst. B33, 1655-1660; Jeffrey...

Proton sharing in bis(4-carbamoylpyridinium) squarate.

Acta crystallographica. Section C, Crystal structure communications

Köroglu A, Bulut A, Uçar I, Nichol GS, Harrington RW, Clegg W.
PMID: 16330846
Acta Crystallogr C. 2005 Dec;61:o678-80. doi: 10.1107/S0108270105032622. Epub 2005 Nov 11.

Reaction in aqueous solution of nickel(II) squarate with isonicotinamide yielded well formed yellow crystals of the title compound, 2C6H6N2O+.C4O4(2-), as a side product. The squarate dianion is bisected by a crystallographic twofold rotation axis, which passes through the centres...

Improved measurement of muon antineutrino disappearance in MINOS.

Physical review letters

Adamson P, Ayres DS, Backhouse C, Barr G, Bishai M, Blake A, Bock GJ, Boehnlein DJ, Bogert D, Cao SV, Childress S, Coelho JA, Corwin L, Cronin-Hennessy D, Danko IZ, de Jong JK, Devenish NE, Diwan MV, Escobar CO, Evans JJ, Falk E, Feldman GJ, Frohne MV, Gallagher HR, Gomes RA, Goodman MC, Gouffon P, Graf N, Gran R, Grzelak K, Habig A, Hartnell J, Hatcher R, Himmel A, Holin A, Huang X, Hylen J, Irwin GM, Isvan Z, Jaffe DE, James C, Jensen D, Kafka T, Kasahara SM, Koizumi G, Kopp S, Kordosky M, Kreymer A, Lang K, Ling J, Litchfield PJ, Loiacono L, Lucas P, Mann WA, Marshak ML, Mathis M, Mayer N, Mehdiyev R, Meier JR, Messier MD, Michael DG, Miller WH, Mishra SR, Mitchell J, Moore CD, Mualem L, Mufson S, Musser J, Naples D, Nelson JK, Newman HB, Nichol RJ, Nowak JA, Oliver WP, Orchanian M, Pahlka RB, Paley J, Patterson RB, Pawloski G, Phan-Budd S, Plunkett RK, Qiu X, Radovic A, Ratchford J, Rebel B, Rosenfeld C, Rubin HA, Sanchez MC, Schneps J, Schreckenberger A, Schreiner P, Sharma R, Sousa A, Strait M, Tagg N, Talaga RL, Thomas J, Thomson MA, Tinti G, Toner R, Torretta D, Tzanakos G, Urheim J, Vahle P, Viren B, Walding JJ, Weber A, Webb RC, White C, Whitehead L, Wojcicki SG, Zwaska R.
PMID: 23003026
Phys Rev Lett. 2012 May 11;108(19):191801. doi: 10.1103/PhysRevLett.108.191801. Epub 2012 May 11.

We report an improved measurement of ν(μ) disappearance over a distance of 735 km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a ν(μ)-enhanced configuration. From a total exposure of 2.95×10(20) protons on target, of...

Order in disorder: solution and solid-state studies of [MM] wheels (M.

Dalton transactions (Cambridge, England : 2003)

Fraser HWL, Nichol GS, Uhrín D, Nielsen UG, Evangelisti M, Schnack J, Brechin EK.
PMID: 29623968
Dalton Trans. 2018 Aug 29;47(34):11834-11842. doi: 10.1039/c8dt00685g.

A family of heterometallic Anderson-type 'wheels' of general formula [MIII2MII5(hmp)12](ClO4)4 (where MIII = Cr or Al and MII = Ni or Zn giving [Cr2Ni5] (1), [Cr2Zn5] (2), [Al2Ni5] (3) and [Al2Zn5] (4); hmpH = 2-pyridinemethanol) have been synthesised solvothermally....

Stable Fe(iii) phenoxyimines as selective and robust CO.

Dalton transactions (Cambridge, England : 2003)

Fazekas E, Nichol GS, Shaver MP, Garden JA.
PMID: 30168568
Dalton Trans. 2018 Oct 07;47(37):13106-13112. doi: 10.1039/c8dt02919a. Epub 2018 Aug 31.

Three phenoxyimine Fe(iii)Cl complexes bearing electronically diverse -Cl, -H or -

Complete Genome Sequences of a Hantavirus Isolate from New York.

Genome announcements

McMullan LK, Albariño CG, Ksiazek TG, Nichol ST, Spiropoulou CF.
PMID: 29567745
Genome Announc. 2018 Mar 22;6(12). doi: 10.1128/genomeA.00188-18.

We report here the complete genome sequences for all three segments of the New York hantavirus (New York 1). This is the first reported L segment sequence for hantaviruses maintained in

Phosphaborenes: Accessible Reagents for the Synthesis of C-C/P-B Isosteres.

Angewandte Chemie (International ed. in English)

Price AN, Nichol GS, Cowley MJ.
PMID: 28643472
Angew Chem Int Ed Engl. 2017 Aug 07;56(33):9953-9957. doi: 10.1002/anie.201705050. Epub 2017 Jul 19.

Formal exchange of C=C units with isoelectronic B=N or B=P units can provide access to molecules with unique electronic or chemical properties. Herein, we report the simple solution-phase generation of highly reactive phosphaborenes, RP=BR, and demonstrate their use for...

Two-photon Lee-Goldburg nuclear magnetic resonance: Simultaneous homonuclear decoupling and signal acquisition.

The Journal of chemical physics

Michal CA, Hastings SP, Lee LH.
PMID: 18266418
J Chem Phys. 2008 Feb 07;128(5):052301. doi: 10.1063/1.2825593.

We present NMR signals from a strongly coupled homonuclear spin system, (1)H nuclei in adamantane, acquired with simultaneous two-photon excitation under conditions of the Lee-Goldburg experiment. Small coils, having inside diameters of 0.36 mm, are used to achieve two-photon...

Showing 1 to 12 of 252 entries