ChemInform Abstract: HIGH PRESSURE STUDIES. PART 22. PHOTOCHEMISTRY OF PHENYL ALKYL KETONES UNDER PRESSURE. REACTIONS OF 1,4-DIRADICALS

1978 ◽  
Vol 9 (32) ◽  
Author(s):  
R. C. JUN. NEUMAN ◽  
C. T. BERGE
Keyword(s):  
High Pressure ◽  
High Pressure Studies

High Pressure Studies of Quantum Well Emission and Deep Emission in GaInP(ordered)-GaAs Heterostructures

1997 ◽  
Vol 499 ◽  
Author(s):  
S. H. Kwok ◽  
P. Y. Yu ◽  
K. Uchida ◽  
T. Arai
Keyword(s):  
High Pressure ◽  
Quantum Well ◽  
Emission Band ◽  
Excitation Power ◽  
High Excitation ◽  
High Pressure Studies ◽  
Band Alignments ◽  
High Pressure Study

ABSTRACTWe report on a high pressure study of emission from a series of GaInP(ordered)/GaAs heterostructures. A so-called “deep emission” band at 1.46 eV is observed in all our samples. At high excitation power, quantum well emission emerges in only one structure where thin GaP layers are inserted on both sides of the GaAs well. From the pressure dependent emission in this sample we have determined its band alignments. The role of the GaP layers in suppressing the deep emission is elucidated.

High pressure studies of Ni3[(C2H5N5)6(H2O)6](NO3)6·1.5H2O by Raman scattering, IR absorption, and synchrotron X-ray diffraction

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 65031-65037 ◽  
Author(s):  
Junru Jiang ◽  
Jianguo Zhang ◽  
Peifen Zhu ◽  
Jianfu Li ◽  
Xiaoli Wang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
High Pressure ◽  
Raman Scattering ◽  
Ir Absorption ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure Studies

Molecular structure (a) and packing diagram (b) of 1. The green, grey, blue, red, and white spheres denote Ni, C, N, O, and H atoms, respectively.

scholarly journals High-pressure studies of palladium and platinum thioether macrocyclic dihalide complexes

2014 ◽  
Vol 70 (3) ◽  
pp. 469-486 ◽  
Author(s):  
David R. Allan ◽  
Daniel Bailey ◽  
Nigel Bird ◽  
Alexander J. Blake ◽  
Neil R. Champness ◽  
...  
Keyword(s):  
High Pressure ◽  
Density Functional ◽  
Metal Centre ◽  
Functional Theory ◽  
Chain Polymer ◽  
Metal Interactions ◽  
Metal Interaction ◽  
High Pressure Studies ◽  
Distorted Octahedral ◽  
Halide Ligands

The mononuclear macrocyclic PdIIcomplexcis-[PdCl2([9]aneS3)] ([9]aneS3= 1,4,7-trithiacyclo-nonane) converts at 44 kbar into an intensely coloured chain polymer exhibiting distorted octahedral coordination at the metal centre and an unprecedented [1233] conformation for the thioether ligand. The evolution of an intramolecular axial sulfur–metal interaction and an intermolecular equatorial sulfur–metal interaction is central to these changes. High-pressure crystallographic experiments have also been undertaken on the related complexes [PtCl2([9]aneS3)], [PdBr2([9]aneS3)], [PtBr2([9]aneS3)], [PdI2([9]aneS3)] and [PtI2([9]aneS3)] in order to establish the effects of changing the halide ligands and the metal centre on the behaviour of these complexes under pressure. While all complexes undergo contraction of the various interaction distances with increasing pressure, only [PdCl2([9]aneS3)] undergoes a phase change. Pressure-induced I...I interactions were observed for [PdI2([9]aneS3)] and [PtI2([9]aneS3)] at 19 kbar, but the corresponding Br...Br interactions in [PdBr2([9]aneS3)] and [PtBr2([9]aneS3)] only become significant at much higher pressure (58 kbar). Accompanying density functional theory (DFT) calculations have yielded interaction energies and bond orders for the sulfur–metal interactions.

High pressure studies on bis( l -histidinate)nickel(II) monohydrate

2018 ◽  
Vol 189 ◽  
pp. 258-264
Author(s):  
J.R. Maia ◽  
J.A. Lima ◽  
P.T.C. Freire ◽  
F.E.A. Melo ◽  
A.S. de Menezes ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressure Studies
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