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Surface chemical ionization mass spectra of protein amino acids
(1975)
The mass spectra of nineteen protein amino acids have been studied using a new type of time-of-flight mass spectrometer that employs 252Cf fission fragments to ionize the sample molecules. The amino acids investigated ...
Catalytic oxidative dimerization of methane
(1987)
The results of this research indicate that [M⁺O⁻] centers (M = Group IA ions) in Group IA/Group IIA oxides are responsible for the catalytic production of CH₃[superscript dot] radicals from CH₄ through hydrogen atom ...
Particle desorption mass spectrometric surface characterization
(1986)
The feasibility of utilizing ²⁵²Cf-Particle Desorption Mass Spectrometry (PDMS) to characterize the surface region of solid samples has been evaluated. The PDMS experiment was adapted to an ultrahigh vacuum (UHV) environment ...
A comparison of anionic transition metal hydrides and anionic transition metal carbonyls : establishing the factors which influence relative reactivity
(1986)
The anionic transition metal hydride, HM(CO)₄L⁻ (M = Cr, W; L = CO, P(OMe)₃, P(C₆H₅)₃, P(Me)₃) reacts with transition metal carbonyl dimers (Cp₂W₂(CO)₆, Cp₂Mo₂(CO)₆, Mn₂(CO)₈{P(C₆H₅)₃}₂, Mn₂(CO)₁₀, Co₂⁻ (CO)₈) to give ...
In-depth analysis of conformational changes in small ring molecules
(1979)
In an attempt to determine the forces responsible for the conformations of small ring molecules the spectra of a series of ring molecules have been recorded and analyzed. Theoretical calculations were carried out to determine ...
Complexes of niobium and tantalum containing metal-metal bonds
(1987)
A new entry into the area of low valent niobium and tantalum complexes containing metal-metal bonds is described. M₂X₆(μ-THT)(THF)₂ complexes, where M = Nb or Ta, X = Cl or Br and THT = tetrahydrothiophene, are conveniently ...
Ion transport in thin polypyrrole films
(1987)
Fundamental and applied aspects of ion transport in polypyrrole films are investigated. In this context, three objectives have been accomplished: i) Composites of polypyrrole and a porous host membrane have been prepared ...
Stereoselective amination of allylic and homoallylic alcohols via intramolecular amidomercuration : applications to the synthesis of amino acids
(1987)
Stereoselective amination of allylic and homoallylic alcohols was applied to the synthesis of nonproteinogenic hydroxy amino acids. The total synthesis of (±)-threo-γ-hydroxy-β-lysine (1) was completed in 10 steps from ...
Synthesis and efficacy of square planar copper complexes designed to nucleate Beta-sheet structure
(1995)
The synthesis of four 6,6'-bis(acylamino)-2,2'-bipyridine-
Ab initio quantum chemical calculations for unusual d1 niobium complexes, bond stretch isomers, and molybdenum oxo-transfer enzymes
(1995)
Previous interpretation of the EPR spectra of the dl pseudo- D4h NbCI4(PR3)2 complexes assumed that the unpaired electron resides in the b2g(dxy) orbital. In contrast, simple molecular orbital considerations suggest that ...