Synthesis of New Chalcogenide Materials. The Novel One-Dimensional Semiconductor K4 Ti3 S14

1987 ◽  
Vol 97 ◽  
Author(s):  
Steven A. Sunshine ◽  
Doris Kang ◽  
James A. Ibers
Keyword(s):  
Electrical Conductivity ◽  
Solid State ◽  
Alkali Metal ◽  
The Novel ◽  
Conductivity Measurements ◽  
One Dimensional ◽  
General Utility ◽  
Solid State Materials ◽  
Chalcogenide Materials

ABSTRACTThe use of A2 Q/Q melts (A - alkali metal, Q - S or Se) for the synthesis of new one-dimensional solid-state materials is found to be of general utility and is illustrated here for the synthesis of K4 Ti3 SI4. Reaction of Ti metal with a K2 S/S melt at 375°C for 50 h affords K4 Ti3 SI4. The structure possesses one-dimensional chains of seven and eightcoordinate Ti atoms with each chain isolated from all others by surrounding K atoms. There are six S-S pairs (dave - 2.069(3) Å) so that the compound is one of TiIV and may be described as K4 [Ti3 (S)2 (S2)6]. Electrical conductivity measurements indicate that this material is a semiconductor.

Studies on metal hydroxy compounds. XV. Electrical conductivity measurements on Cd(OH)Cl, Cu(OH)Cl, and PbOHCl

1977 ◽  
Vol 55 (19) ◽  
pp. 3377-3379
Author(s):  
Mahadeva Natarajan ◽  
Etalo A. Secco
Keyword(s):  
Electrical Conductivity ◽  
Solid State ◽  
Temperature Measurements ◽  
Conductivity Measurements ◽  
Decomposition Step ◽  
Hydroxy Compounds

The electrical conductivity dependence on temperature measurements for three metal basic chlorides are reported. The conductivity results yield energy values which are interpreted in terms of active solid state processes leading up to, and including, the decomposition step.

scholarly journals Synthesis, Crystal Structure, and Electrical Properties of a New Molybdylarsenate LiNa5K3Mo11As3O45

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Hamadi Hamza ◽  
Mohamed Faouzi Zid ◽  
Ahmed Driss
Keyword(s):  
Crystal Structure ◽  
Electrical Conductivity ◽  
Solid State ◽  
Inorganic Compound ◽  
X Ray Diffraction ◽  
Solid State Method ◽  
One Dimensional ◽  
X Ray ◽  
Triclinic System ◽  
State Method

LiNa5K3Mo11As3O45 is a new inorganic compound. It was synthesized by a solid state method. The crystal structure has been studied by single crystal X-ray analysis. The R-values reached 2.8%. The title compound crystallizes in the triclinic system, space group P-1, with a = 10.550 (2) Å, b = 11.723 (2) Å, c = 17.469 (3) Å, α = 102.35 (3)°, β = 87.61 (2)°, and γ = 111.03 (3)°. The anionic unit [Mo11As3O45]9− is formed by nine MoO6 octahedra, two MoO5 trigonal bipyramids, and three AsO4 tetrahedra. The association of [Mo11As3O45]9− units, running along [010], leads to a one-dimensional framework. Li, K, and Na are located in the space surrounding the anionic ribbons. This material was characterized by SEM microscopy, IR spectroscopy, and powder X-ray diffraction. The electrical conductivity was investigated from 528 K to 673 K by impedance complex followed by DSC spectroscopy.

Hantzsch 1,4-dihydropyridine esters and analogs: candidates for generating reproducible one-dimensional packing motifs

2009 ◽  
Vol 65 (3) ◽  
pp. 375-381 ◽  
Author(s):  
R. S. Rathore ◽  
B. Palakshi Reddy ◽  
V. Vijayakumar ◽  
R. Venkat Ragavan ◽  
T. Narasimhamurthy
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
Structural Requirements ◽  
One Dimensional ◽  
High Binding ◽  
Solid State Materials ◽  
Derivatives Of

Examination of the symmetric Hantzsch 1,4-dihydropyridine ester derivatives of the prototypical nifedipine molecule indicates the tendency of this class of molecule to form a common packing motif. Crystal structure analysis of 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic diesters and analogs reveals that they form extended chains, characterized as the C(6) packing motif, via intermolecular (amine) N—H...O=C (C3,C5 carbonyl) hydrogen bonds. In addition, all the prepared derivatives also satisfy the basic structural requirements for their high binding efficiency to the receptor. The reproducible C(6) packing motif observed among these compounds has a use in the design of solid-state materials.

scholarly journals Structure and electrical properties of a one-dimensional polymeric silver thiosaccharinate complex with argentophilic interactions

2018 ◽  
Vol 74 (2) ◽  
pp. 186-193
Author(s):  
Mariana Dennehy ◽  
Pilar Amo-Ochoa ◽  
Eleonora Freire ◽  
Sebastián Suárez ◽  
Emilia Halac ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Spectroscopic Analysis ◽  
Low Frequency ◽  
Relevant Feature ◽  
Conductivity Measurements ◽  
Aim Analysis ◽  
One Dimensional ◽  
Potential Applications ◽  
Raman Study ◽  
Argentophilic Interactions

Among the potential applications of coordination polymers, electrical conductivity ranks high in technological interest. We report the synthesis, crystal structure and spectroscopic analysis of an AgI–thiosaccharinate one-dimensional coordination polymer {systematic name: catena-poly[[[aquatetrakis(μ3-1,1-dioxo-1,2-benzisothiazole-3-thiolato-κ3 N:S 3:S 3)tetrasilver(I)]-μ2-4,4′-(propane-1,3-diyl)dipyridine-κ2 N:N′] dimethyl sulfoxide hemisolvate]}, {[Ag4(C7H4NO2S2)4(C13H14N2)(H2O)]·0.5C2H6OS} n , with the 4,4′-(propane-1,3-diyl)dipyridine ligand acting as a spacer. A relevant feature of the structure is the presence of an unusually short Ag...Ag distance of 2.8306 (9) Å, well within the range of argentophilic interactions, confirmed experimentally as such by a Raman study on the low-frequency spectrum, and corroborated theoretically by an Atoms in Molecules (AIM) analysis of the calculated electron density. Electrical conductivity measurements show that this complex can act as a semiconductor with moderate conductivity.

The Electrical Conductivity Measurements of Solid Electrolyte, CuZr2 (PO4)3

1988 ◽  
Vol 135 ◽  
Author(s):  
T.J. Lee ◽  
P.C. Yao ◽  
S.E. Hsu ◽  
D.J. Fray
Keyword(s):  
Electrical Conductivity ◽  
Solid State ◽  
Electrical Properties ◽  
Solid Electrolyte ◽  
Copper Ion ◽  
Conductivity Measurements ◽  
Ion Conductor

AbstractThis study reports measurements of electrical properties of the solid state copper ion conductor CuZr2 (PO4)3.

Dioxa-dithia Macrocycle-bridged Dimeric with Hexakis(alkylthio) Substituents and Network Polymer Phthalocyanines

1997 ◽  
Vol 01 (01) ◽  
pp. 67-76 ◽  
Author(s):  
A. G. GÜREK ◽  
Ö. BEKARO ĞLU
Keyword(s):  
Electrical Conductivity ◽  
Nmr Spectroscopy ◽  
Chemical Doping ◽  
The Novel ◽  
Conductivity Measurements ◽  
Network Polymer ◽  
Network Polymers ◽  
H Nmr ◽  
Elemental Analyses ◽  
C Nmr

1,7-dithia (12-crown-4)-bridged phthalocyanine network polymers were prepared from tetracyanodibenzo-[1,7-dithia(12-crown-4)]. In addition, the synthesis of two 1,7-dithia (12-crown-4) linked peripherally octa-substituted dimeric phthalocyanines, which contain a combination of hexakis(alkylthia) side chains, is described. These extremely soluble compounds were prepared by the condensation of an iminoisoindoline derivative and a subphthalocyanine. The novel compounds are characterized by elemental analyses, UV/vis, IR, mass, 1 H NMR and 13 C NMR spectroscopy. The electrical conductivity measurements of three of the four network polymers were unsuccessful; however chemical doping with NOBF 4 could be increased to a measurable value. The electrical conductivity of the dimeric phthalocyanines are in the semiconductor range.

Some Size and Quantum Effects in Molecular Nanostructures

2012 ◽  
Vol 721 ◽  
pp. 71-76 ◽  
Author(s):  
Paata J. Kervalishvili ◽  
Manana G. Khachidze
Keyword(s):  
Elementary Particle ◽  
Solid State ◽  
Quantum Effects ◽  
Molecular Clusters ◽  
The Novel ◽  
Particle Interactions ◽  
Electromagnetic Devices ◽  
Magnetic Solid ◽  
Solid State Materials ◽  
Molecular Nanostructures

Quantum effects in nanostructured magnetic solid state materials open the new ways for preparing the novel electromagnetic devices with unique characteristics. At the same the electron spin based quantum effects are fully determined of formation and growing properties of molecular clusters of these solid state materials which are united in plane and volume structures also according their quantum (elementary particle interactions) properties.

Structural and catalytic properties of MoO3-NiO mixed oxides system

1989 ◽  
Vol 54 (6) ◽  
pp. 1508-1513 ◽  
Author(s):  
Abd El Aziz A. Said ◽  
Ehsan A. Hassan ◽  
Ahmed M. El-Awad ◽  
Khalf-Alla M. Abd El-Salaam
Keyword(s):  
Electrical Conductivity ◽  
Catalytic Activity ◽  
Solid State ◽  
Surface Area ◽  
Solid State Reaction ◽  
Mixed Oxides ◽  
Catalytic Properties ◽  
Xrd Analysis ◽  
Conductivity Measurements ◽  
Activity Measurements

The unsupported MoO3-NiO catalysts were investigated. The addition process of NiO was followed by electrical conductivity measurements, IR, XRD, surface area and finally catalytic activity measurements. The conductivity measurements revealed an increase in σ values when 2-propanol vapour was admitted in the gas feed. IR and XRD analysis detected a solid state reaction at about 500 °C and its maximum was shown around 70 mole % Ni2+ where NiMoO4 lattice diffraction type was detected. Parallel with these measurements, the catalytic activity was determined for the catalysts calcined at 500 °C using the decomposition of 2-propanol. The conversion and the selectivity increased as Ni2+ was added to a concentration of 70 mole % Ni2+ ions. The results were discussed in respect to the creation of holes associated to Ni2+ addition.

Electrical Conductivity and Nonstoichiometry in Pr0.545Ce0.455O2-x

1996 ◽  
Vol 453 ◽  
Author(s):  
O. Porat ◽  
H. L. Tuller ◽  
M. Shelef ◽  
E. M. Logothetis
Keyword(s):  
Electrical Conductivity ◽  
Phase Separation ◽  
Solid State ◽  
Small Polaron ◽  
Coulometric Titration ◽  
Oxygen Nonstoichiometry ◽  
Conductivity Measurements ◽  
Two Phase ◽  
Polaron Hopping ◽  
P Type

AbstractThe oxygen nonstoichiometry of Pr0.545Ce0.455O2-x was studied by solid state coulometric titration and was found to be extensive (0 ≤ y ≤ 0.28) at temperatures of 400–600 °C. The Po2 - x curves showed evidence of the existence of a number of single and two phase regions. Electrical conductivity measurements, performed under similar conditions, exhibited a p-n transition for temperature of 500 °C and below. The activated p-type conductivity was modeled in terms of the small polaron hopping mechanism. The p-n transition was correlated with the onset of phase separation.

Sign in / Sign up

Export Citation Format

Share Document