Showing papers by "Galen D. Stucky published in 1977"
129 citations
65 citations
TL;DR: In this article, the dilithio complex of acenaphthylene, [Li(CH3]2N(CH2)2N-tetramethylethylenediamine (TMEDA) with acenphthene results in 1,2-hydrogen abstraction.
42 citations
TL;DR: In this article, a review of the structural aspects of 1-D conductors is presented, focusing on the early transition metal complexes, the organic charge transfer complexes, and the partially oxidized transition metal d/sup 8/ complexes.
Abstract: This review emphasizes recent advances in the investigation of the structural aspects of 1-D conductors. The discussion is limited to the early transition metal complexes, the organic charge-transfer complexes, and the partially oxidized transition metal d/sup 8/ complexes. Since our goal has not been to provide a totally comprehensive survey, many interesting materials which have electronic properties that are 3-D but have some 1-D structural character, such as (SN)/sub x/ (2) and Hg/sub 2/./sub 86/AsF/sub 6/ (3), are not included within the scope of this review. In order to define certain terms and concepts, a brief introduction to the basic theories of 1-D conductivity is given in the following section.
40 citations
TL;DR: The crystal structure of dicyclopentadienylvanadium(III) monochloride, (η5-C5H5)2VCl, has been solved by the X-ray diffraction heavy atom method as discussed by the authors.
37 citations
TL;DR: In this article, the authors observed and measured the X-ray diffuse scattering from several new partially oxidized tetracyanoplatinate, TCP, complexes and found that the superlattice associated with the diffuse sheets correponds to the 2kF wavevector derived from the chemical formula.
16 citations
TL;DR: In this paper, the structure of the charge transfer salt Tetrathiofulvalenium 2,5-diethyltetracyanoquinodimethane (TTF-DETCNQ), which undergoes a metal-insulator transition at 111°K, was examined at 120° and 81°K by single crystal X-ray diffraction.
5 citations
01 Jan 1977
TL;DR: The magnetic susceptibility of single crystals of TTF-TCNQ was measured along the principal directions over the temperature range from 4 K to 70 K in this paper, and definite anomalies were observed at 38 K and 54 K, the former showing hysteresis.
Abstract: The magnetic susceptibility of single crystals of TTF-TCNQ was measured along the principal directions over the temperature range from 4 K to 70 K. Definite anomalies were observed at 38 K and 54 K, the former showing hysteresis. No temperature dependent anistotropy was found. Fits to a two-gap model give a low temperature gap of 125 K and a high temperature gap of 370 K. A deviation from exponentially activated behavior was noted in the region near 48 K.
1 citations
TL;DR: In this article, the conductivity and heat capacity in the vicinity of the metal-insulator transition have been determined for the pseudo-one-dimensional charge transfer salt tetrathiafulvalenium 2,5-diethyltetra-cyanoquinodimethane (TTF-DETCNQ).
Abstract: The single crystal structural features conductivity and heat capacity in the vicinity of the metal-insulator transition have been determined for the pseudo-one-dimensional charge transfer salt tetrathiafulvalenium 2,5-diethyltetra-cyanoquinodimethane (TTF-DETCNQ). The metal insulator transition observed in the conductivity measurements in the stacking direction is sharply defined by a peak in the heat capacity curve at 111 K. Assuming a single band model, the density of states at the Fermi surface is estimated to be 5.7 eV. Changes in structural features including dynamic and/or static displacements of molecules in the unit cell as a function of temperature are also described.