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Full-Text Articles in Chemistry

Bis{L-2,20-[1,10-(Ethane-1,2-Diyldinitrilo)- Diethylidyne]Diphenolato}Bis[(Benzoatojo)Manganese(Iii)] Dihydrate, V. S. Thampidas, T. Radhakrishnan, Robert D. Pike Jan 2008

Bis{L-2,20-[1,10-(Ethane-1,2-Diyldinitrilo)- Diethylidyne]Diphenolato}Bis[(Benzoatojo)Manganese(Iii)] Dihydrate, V. S. Thampidas, T. Radhakrishnan, Robert D. Pike

Arts & Sciences Articles

The title compound, [Mn2(C18H18N2O2)2Cl2], was synthesized by the reaction between manganese(II) o-chloro­benzoate and the Schiff base generated in situ by the condensation of ethane-1,2-diamine and o-hydroxy­acetophenone. The centrosymmetric dimer contains two Jahn-Teller-distorted mangan­ese(III) ions, each in an octa­hedral geometry, connected through two phen­oxy bridges from two ligands.


Effects Of Metal-Based Montmorillonite Clay And Zeolite Additives On The Fire Retardance And Smoke Suppression Of Poly(Vinyl Chloride), Alexander George Zestos Jan 2008

Effects Of Metal-Based Montmorillonite Clay And Zeolite Additives On The Fire Retardance And Smoke Suppression Of Poly(Vinyl Chloride), Alexander George Zestos

Dissertations, Theses, and Masters Projects

No abstract provided.


Organotitanium-Aluminum Promoted Carbometalations Of Alkynols: Substituent Effects, Nikola A. Nikolic Jan 2008

Organotitanium-Aluminum Promoted Carbometalations Of Alkynols: Substituent Effects, Nikola A. Nikolic

Dissertations, Theses, and Masters Projects

No abstract provided.


Surface Study Of Niobium For Superconducting Radio Frequency (Srf) Accelerators, Hui Tian Jan 2008

Surface Study Of Niobium For Superconducting Radio Frequency (Srf) Accelerators, Hui Tian

Dissertations, Theses, and Masters Projects

Niobium rf superconductivity is a near-surface phenomenon because of the shallow rf penetration depth. Accordingly, the performance of Nb SRF accelerator cavities is strongly impacted by the topmost few nanometers interior surface, especially as impacted by the final surface conditioning treatments.;Surface topography impacts performance through local loss of superconductivit caused by intrusion of the rf magnetic field, which is enhanced at sharp protrusions. "Sharpness" comprises both vertical and lateral aspects, requiring development a new characterization approach beyond the familiar roughness measurements (Ra, Rz), which view only the vertical component. Stylus profilomety and atomic force microscopy traces view surface topography from …


Crystal Structure Of Di-Iso-Butylammonium Thiolactatotriphenylstannate, Olaniran Atchade, Xueqing Song, Robert Pike, George Eng Jan 2008

Crystal Structure Of Di-Iso-Butylammonium Thiolactatotriphenylstannate, Olaniran Atchade, Xueqing Song, Robert Pike, George Eng

Arts & Sciences Articles

The title compounds, [(iso-C4H9)2NH2][SnPh3(O2CCH(CH3)S)], crystallized in a monoclinic space group P21/n with the following cell parameters: a = 9.8537(2)Å, b = 16.7775(3)Å, c = 17.5845(3)Å, β = 103.7740(10)°, V = 2823.48(9)Å3, Z = 4 and Dx = 1.375 Mg m-3. The structure was refined to a final R value of 0.0222 for 5042 reflections [I > 2σ(I)]. The structure of the complex is ionic consisting of an anionic triphenyltin moiety and a cationic di-iso-butylammonium portion. In addition, a hydrogen bonding network between the cations and anions was observed.


Aqua {2,2-[Ethane-1,2-Diylbis(Nitrilomethylidyne)]Diphenolato}(3-Nitrobenzoato)Manganese(Iii), V. S. Thampidas, T. Radhakrishnan, Robert D. Pike Jan 2008

Aqua {2,2-[Ethane-1,2-Diylbis(Nitrilomethylidyne)]Diphenolato}(3-Nitrobenzoato)Manganese(Iii), V. S. Thampidas, T. Radhakrishnan, Robert D. Pike

Arts & Sciences Articles

The title compound, [Mn(C16H14N2O2)(C7H4NO4)(H2O)], is a Jahn-Teller-distorted manganese(III) monomer with an octa­hedral geometry. The tetra­dentate Schiff base accommodates the MnIII ion at the centre of a nearly planar square. The axial positions are occupied by a monodentate carboxyl­ate group and a water mol­ecule. Adjacent monomers inter­act through hydrogen bonding between the noncoordinated C=O group of the carboxyl­ate and the coordinated water mol­ecule to produce chains extending parallel to the b axis.


2,2,3,30-Tetraphenyl-7,70-Biquinoxaline, Eric E. Dueno, Ricky J. Paul, Ralph N. Salvatore, Robert D. Pike Jan 2008

2,2,3,30-Tetraphenyl-7,70-Biquinoxaline, Eric E. Dueno, Ricky J. Paul, Ralph N. Salvatore, Robert D. Pike

Arts & Sciences Articles

In the crystal structure of the title compound, C40H26N4, mol­ecules reside on crystallographic centers of inversion and are linked via C-HN inter­actions about inversion centers into one-dimensional chains: longer C-H(arene) inter­actions complete the inter­molecular inter­actions.


Poly[L-2-Aminopyrazine-J2 N1 :N4 - L-Cyanido-Copper(I)]: A Three-Dimensional Network From Laboratory Powder Diffraction Data, Silvina Pagola, Robert D. Pike, Kathryn Dekrafft, Tristan A. Tronic Jan 2008

Poly[L-2-Aminopyrazine-J2 N1 :N4 - L-Cyanido-Copper(I)]: A Three-Dimensional Network From Laboratory Powder Diffraction Data, Silvina Pagola, Robert D. Pike, Kathryn Dekrafft, Tristan A. Tronic

Arts & Sciences Articles

In the title compound, [Cu(CN)(C4H5N3)]n or [Cu(-CN)(-PyzNH2)]n (PyzNH2 is 2-amino­pyrazine), the CuI center is tetra­hedrally coordinated by two cyanide and two PyzNH2 ligands. The CuI-cyano links give rise to [Cu-CN] chains running along the c axis, which are bridged by bidentate PyzNH2 ligands. The three-dimensional framework can be described as being formed by two inter­penetrated three-dimensional honeycomb-like networks, both made of 26-membered rings of composition [Cu6(-CN)2(-PyzNH2)4].


Novel Approaches To The Fabrication Of Highly Conductive Silver Surfaces Well Adhered To Polyimide Substrates, Luke Michael Davis Jan 2008

Novel Approaches To The Fabrication Of Highly Conductive Silver Surfaces Well Adhered To Polyimide Substrates, Luke Michael Davis

Dissertations, Theses, and Masters Projects

No abstract provided.