Index Catalog // ScholarsArchive@OSU

Coriolis analysis of several high-resolution infrared bands of bicyclo[111]pentane-d₀ and -d₁

Creator:: Perry, A., Martin, M. A., Nibler, J. W., Maki, A., Weber, A., and Blake, T. A.
Abstract:: High-resolution infrared absorption spectra have been analyzed for two bicyclo[111]pentane isotopologues, C₅H₈ (-d₀) and C₅H₇D (-d₁), where in the latter the D-atom replaces a hydrogen on the C₃ symmetry axis such that the molecular symmetry is reduced from D₃ₕ to C₃ᵥ. Two (a"₂) parallel bands, v₁₇ and v₁₈, of bicyclopentane-d₀...
Resource Type:: Article
Full Text:: . Weber c, T.A. Blake d aDepartment of Chemistry, Oregon State University, Corvallis, OR 97332-4003

C–H···O Non-Classical Hydrogen Bonding in the Stereomechanics of Organic Transformations: Theory and Recognition

Creator:: Johnston, Ryne C. and Cheong, Paul Ha-Yeon
Abstract:: This manuscript describes the role of non-classical hydrogen bonds (NCHBs), specifically C–H···O interactions, in modern synthetic organic transformations. Our goal is to point out the seminal examples where C–H···O interactions have been invoked as a key stereocontrolling element and to provide predictive value in recognizing future and/or potential C–H···O interactions...
Resource Type:: Article
Full Text:: RSC Article Template (Version 3.2) C–H···O Non

Catalyst selective and regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates: synthetic and computational studies

Creator:: Gould, Eoin, Walden, Daniel M., Kasten, Kevin, Johnston, Ryne C., Wu, Jiufeng, Slawin, Alexandra M., Mustard, Thomas J. L., Johnston, Brittany, Davies, Tony, Cheong, Paul Ha-Yeon, and Smith, Andrew D.
Abstract:: The regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates is described, with DMAP giving preferential N-carboxylation and triazolinylidenes promoting selective C-carboxylation (both with up to >99 : 1 regioselectivity). An enantioselective O- to C-carboxyl variant using NHC catalysis is demonstrated (up to 92% ee), while mechanistic and DFT studies outline...
Resource Type:: Article
Full Text:: ., ... & Smith, A. D. (2014). Catalyst selective and regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl

Effect of oxygen concentration on the structural and magnetic properties of LaRh₁/₂Mn₁/₂O₃ thin films

Creator:: Sheets, W. C., Smith, A. E., Subramanian, M. A., and Prellier, W.
Abstract:: Epitaxial LaRh₁/₂Mn₁/₂O₃ thin films have been grown on (001)-oriented LaAlO₃ and SrTiO₃ substrates using pulsed laser deposition. The optimized thin film samples are semiconducting and ferromagnetic with a Curie temperature close to 100 K, a coercive field of 1200 Oe, and a saturation magnetization of 1.7μB per formula unit. The...
Resource Type:: Article
Full Text:: � through a �180° Mn4+–O–B2+ Goodenough– Kanamori interaction, resulting in a ferromagnetic coupling. A

Refractive Index and Optical Dispersion of In2O3, InBO3 and Gahnite

Creator:: Medenbach, O., Siritanon, Theeranun, Subramanian, Mas, Dettmar, D., Shannon, R. D., and Fischer, R. X.
Abstract:: Refractive indices of In₂O₃, In₂₋ₓSnₓO₃, InBO₃ and 2 different gahnite crystals (ZnAl₂O₄ and Zn.₉₅Fe.₀₅Al₂O₄) were measured at wavelengths of 435.8 to 643.8 nm and were used to calculate n at λ = 589.3 nm ( nD ) and at λ = ∞ (n∞) using the one-term Sellmeier equation 1/(n²-1) =...
Resource Type:: Article
Full Text:: . O. Medenbacha, Theeranun Siritanonb*, Mas Subramanianb**, D. Dettmara, R.D. Shannonc, and R. X

Laboratory-frame electron angular distributions: Probing the chemical environment through intramolecular electron scattering

Creator:: Patanen, M., Travnikova, O., Zahl, M. G., Söderstrom, J., Decleva, P., Thomas, T. D., Svensson, S., Mårtensson, N., Børve, K. J., Sæthre, L. J., and Miron, C.
Abstract:: Carbon 1s photoelectron asymmetry parameters β for the chlorinated and the methyl carbon atom of CH₃CH₂Cl, CH₃CHCl₂, and CH₃CCl₃ have been measured using synchrotron radiation in the 340-600 eV energy range. We provide experimental evidence that the intramolecular scattering strongly affects beta values, even far from the ionization threshold. The...
Resource Type:: Article
Full Text:: M. Patanen,1 O. Travnikova,1 M. G. Zahl,2 J. Söderström,3 P. Decleva,4 T. D. Thomas,5 S. Svensson

Highly Regioselective Nitrile Oxide Dipolar Cycloadditions with ortho-Nitrophenyl Alkynes

Creator:: McIntosh, Melissa L., Naffziger, Michael R., Ashburn, Bradley O., Zakharov, Lev N., and Carter, Rich G.
Abstract:: The dipolar cylcoadditions of ortho-nitrophenyl alkynes with aryl nitrile oxides has been demonstrated. A range of substituents are tolerated on the alkyne. These reactions proceed with excellent levels of regioselectivity. Subsequent functionalization of the isoxazole scaffold has been demonstrated.
Resource Type:: Article
Full Text:: . (c) B. O. Ashburn, R. G. Carter and L. N. Zakharov, J. Am. Chem. Soc., 2007, 129, 9109- 9116. (d

Effects of molecular potential and geometry on atomic core-level photoemission over an extended energy range: The case study of the CO molecule

Creator:: Kukk, E., Travnikova, O., Mondal, S., Kimura, M., Sakai, K., Miron, C., Martín, F., Ueda, K., Ayuso, D., Thomas, T. D., Decleva, P., Patanen, M., Argenti, L., Plésiat, E., Palacios, A., and Kooser, K.
Abstract:: We report an experimental and theoretical study of single-molecule inner-shell photoemission measured over an extended range of photon energies. The vibrational intensity ratios I (nu = 1)/I (nu = 0) from the C 1s photoelectron spectra of carbon monoxide, although mostly determined by the bond length change upon ionization, are...
Resource Type:: Article
Full Text:: the CO molecule E. Kukk,1,* D. Ayuso,2 T. D. Thomas,3 P. Decleva,4,† M. Patanen,5 L. Argenti,2 E

Stability of the ferromagnetic ground state of La₂ MnNiO₆ against large compressive stress

Creator:: Haskel, D., Fabbris, G., Souza-Neto, N. M., van Veenendaal, M., Shen, G., Smith, A. E., and Subramanian, M. A.
Abstract:: The effect of quasi-hydrostatic pressure upon the ferromagnetic ground state of magnetodielectric, double- perovskite La₂ MnNiO₆ is investigated using x-ray absorption spectroscopy and diffraction measurements in a diamond anvil cell. The Mn-O-Ni superexchange interaction that gives rise to ferromagnetism in this cation- ordered structure is stable to at least 38...
Resource Type:: Article
Full Text:: ) Stability of the ferromagnetic ground state of La2MnNiO6 against large compressive stress D. Haskel,1,* G

Total synthesis of the marine toxin phorboxazole A using palladium(II)-mediated intramolecular alkoxycarbonylation for tetrahydropyran synthesis

Creator:: Kuntiyong, Punlop, Lee, Tae Hee, Kranemann, Christian L., and White, James D.
Abstract:: The potent antitumor agent phorboxazole A was synthesized from six subunits comprising C1-C2 (115), C3-C8 (98), C9-C19 (74), C20-C32 (52), C33-C41 (84) and C42-C46 (85). Tetrahydropyrans B and C containing cis-2,6-disubstitution were fabricated via palladium(II)-mediated intramolecular alkoxycarbonylation which, in the case of tetrahydropyran C, was carried out with catalytic palladium(II)...
Resource Type:: Article
Full Text:: 111, R1 = Ms, R2 = TES 112, R1 = Ms, R2 = H D Br O OMe OTBDPS OMe O N O OPMB N O O OTBDPS

ScholarsArchive@OSU

Coriolis analysis of several high-resolution infrared bands of bicyclo[111]pentane-d₀ and -d₁

C–H···O Non-Classical Hydrogen Bonding in the Stereomechanics of Organic Transformations: Theory and Recognition

Catalyst selective and regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates: synthetic and computational studies

Effect of oxygen concentration on the structural and magnetic properties of LaRh₁/₂Mn₁/₂O₃ thin films

Refractive Index and Optical Dispersion of In2O3, InBO3 and Gahnite

Laboratory-frame electron angular distributions: Probing the chemical environment through intramolecular electron scattering

Highly Regioselective Nitrile Oxide Dipolar Cycloadditions with ortho-Nitrophenyl Alkynes

Effects of molecular potential and geometry on atomic core-level photoemission over an extended energy range: The case study of the CO molecule

Stability of the ferromagnetic ground state of La₂ MnNiO₆ against large compressive stress

Total synthesis of the marine toxin phorboxazole A using palladium(II)-mediated intramolecular alkoxycarbonylation for tetrahydropyran synthesis

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