Physical Sciences and Mathematics Commons^™

A Convenient One-Pot, Organoaluminum Mediated Vinylsilane Synthesis From Non-Enolizable Ketones Via The Peterson Protocol, Man Lung Kwan, Merle Battiste

Man Lung Desmond Kwan

Vinylsilanes serve as convenient vinyl anion equivalents which have gained popularity over decades. A variety of non-enolizable aromatic ketones are converted to the corresponding vinylsilanes in a one-pot procedure involving the addition of (trimethylsilylmethyl)lithium to aromatic ketones followed by addition of diethylaluminum chloride and then small amounts of water. Halide and alkoxide substituents are tolerated, and this trans-stereoselective (broad generalization; the most sterically bulky group on the double bond is trans to the trimethylsilyl group) reaction affords vinylsilanes in good yield.

Structure, Wettability, And Reductive Desorption Of Self-Assembled Monolayers Of Positional Isomers Of (12-Mercaptododecyl)Phenol, Francisco Cavadas, Mark Anderson

Mark R. Anderson

No abstract is currently available.

Molecular Dynamics Simulations Of Sodium Dodecyl Sulfate Micelle In Water: The Behavior Of Water, Chrystal Bruce, Sanjib Senapati, Max Berkowitz, L. Perera, M. Forbes

Chrystal D. Bruce

Using a 5 ns explicit atom molecular dynamics simulation of a 60 monomer sodium dodecyl sulfate micellar system containing 7579 TIP3P water molecules, the behavior of water in different electrostatic environments was examined. Structural evaluation of the system revealed that penetration of water molecules into the micelle was restricted to the headgroup region, leaving a 12 Å water-free hydrocarbon core. Water molecules near the headgroup exhibit a distortion of the water−water hydrogen bonding network due to headgroup oxygen−water hydrogen bond formation. The dynamic implications of this distortion are manifested in the decay of the dipole autocorrelation function, Φ(t) and translational …

Application Of Steaming Video And Flash Animation For Teaching Analytical Chemistry, Mark Anderson

Mark R. Anderson

No abstract is currently available.

Studies Of The Relationship Between The Structure And Properties Of Interfacial Thin Films, Mark Anderson

Mark R. Anderson

No abstract is available at this time.

The Enthalpy Of Vaporization And Sublimation Of Corannulene, Coronene, And Perylene At T = 298.15 K, James S. Chickos, Paul Webb, Gary Nichols, Tetsu Kiyobayashi, Pei-Chao Cheng, Lawrence Scott

James Chickos

No abstract provided.

Molecular Dynamics Simulation Of Sodium Dodecyl Sulfate Micelle In Water: Micellar Structural Characteristics And Counterion Distribution, Chrystal Bruce, Max Berkowitz, Lalith Perera, Malcolm Forbes

Chrystal D. Bruce

An all-atom 5 nanosecond molecular dynamics simulation of a water-solvated micelle containing 60 sodium dodecyl sulfate monomers was performed. Structural properties such as the radius of gyration, eccentricity, micellar size, accessible surface area, dihedral angle distribution, carbon atom distribution, and the orientation of the monomers toward the micelle center of mass were evaluated. The results indicate a stable micellar system over the duration of the simulation. Evaluation of the structure and motion of the sodium counterions show (1) a long equilibration time (1 nanosecond) is required to achieve a stable distribution of counterions and (2) approximately 25% of the sodium …

Enthalpies Of Sublimation Of Organic And Organometallic Compounds. 1910–2001, James S. Chickos, William E. Acree

James Chickos

No abstract provided.

Structure Of Xe+N Clusters (N=3–30): Simulation And Experiment, Jose A. Gascon, Randall W. Hall, Christoph Ludewigt, Helmut Haberland

Randall W. Hall

Bismuth Triflate Catalyzed Allylation Of Acetals: A Simple And Mild Method For Synthesis Of Homoallyl Ethers, Ram S. Mohan, Laura C. Wieland, Herbert M. Zerth

Ram S. Mohan

Applications Of Bismuth(Iii) Compounds In Organic Synthesis, Ram S. Mohan, Nicholas M. Leonard, Laura C. Wieland

Ram S. Mohan

No abstract provided.

Synthesis And Physico-Chemical Investigations On 16 And 18 Membered [N4] Macrocycles Modified With Appropriate Carbonyl Functions - A Closer Mimic To A Synthetic Cyclic Tetrapeptide; Isolation Of Stable Encapsulated Derivatives With Zn(Ii),Cd(Ii) And Hg(Ii) Ions, Z. A. Siddiqi, V. J. Mathew, Mohammad Mansoob Khan Dr

Dr. Mohammad Mansoob Khan

Reaction of 1, 2-diamine or 1,3-diamine with succinic/ phthalic anhydride in 1:1 molar ratio at RT in dioxane results in 16-membered or 18 membered macrocycle which posseses tetraamide/ tetrapeptide functions in the molecular unit which however, exhibit ample reactivity towards metallic substrates affording stable compounds with [MLX2 ] (M=Zn,Cd or Hg; X = CI, SCN or CI04 ) stoichiometry as evidenced from the physico-chemical investigations which confirm that the macrocyclic moieties (L| - L6 ) have the appropriate cavity sizes to encapsulate Zn(II), Cd (II) or Hg(II) ions via coordination through nitrogens of the amide/ peptide functions in tetradentate fashion …