scholarly journals Selenium Compound

2020 ◽  
Author(s):  
Keyword(s):  
Selenium Compound

Low Temperature OMVPE of ZnSe from Alkyl Sources Using a Plasma Disk Lamp

1988 ◽  
Vol 129 ◽  
Author(s):  
K. L. Tokuda ◽  
B. Pihlstrom ◽  
D. W. Kisker ◽  
M. Lamont Schnoes ◽  
G. J. Collins
Keyword(s):  
Growth Process ◽  
Vacuum Ultraviolet ◽  
Source Material ◽  
Organometallic Vapor Phase Epitaxy ◽  
Impurity Incorporation ◽  
High Quality ◽  
Selenium Compound ◽  
Ultraviolet Photons ◽  
Reduced Toxicity ◽  
Source Materials

ABSTRACTThe growth of high quality ZnSe by organometallic vapor phase epitaxy (OMVPE) has generally been hindered because of parasitic source pre-reactions or relatively high source decomposition temperatures. In this work, we have used vacuum ultraviolet photons generated by a disk-plasma lamp to assist the ZnSe growth process using diethylselenium and diethylzinc as source materials. This approach has resulted in satisfactory growth rates and high material quality at temperatures as low as 250°C, without the limitations of prereaction typically observed when H2Se is used for the selenium source material. In addition, the alkyl selenium compound offers advantages due to reduced toxicity compared to H2Se. This new, low-growth-temperature process thus offers the possibility of improved stoichiometry and impurity incorporation control as well as a reduced thermal effect on the underlying substrate during growth. At the same time, the advantages of excellent morphology and uniformity typically exhibited by the alkylbased growth processes are retained.

Inorganic and organic selenium compound speciation with coupled HPLC-MW-HG-AFS

1999 ◽  
Vol 13 (10) ◽  
pp. 783-787 ◽  
Author(s):  
J. L. Gómez-Ariza ◽  
D. Sánchez-Rodas ◽  
E. Morales ◽  
O. Herrgott ◽  
I. L. Marr
Keyword(s):  
Selenium Compound ◽  
Organic Selenium ◽  
Inorganic And Organic

scholarly journals Chiral Chalcogen Bond Donors Based on the 4,4′-Bipyridine Scaffold

Molecules ◽  
2019 ◽  
Vol 24 (24) ◽  
pp. 4484 ◽  
Author(s):  
Robin Weiss ◽  
Emmanuel Aubert ◽  
Paola Peluso ◽  
Sergio Cossu ◽  
Patrick Pale ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
High Performance ◽  
Chiral Stationary Phase ◽  
Asymmetric Induction ◽  
Selenium Compound ◽  
Design And Synthesis ◽  
Catalytically Active ◽  
A Site ◽  
Site Selective ◽  
Proof Of Principle

Organocatalysis through chalcogen bonding (ChB) is in its infancy, as its proof-of-principle was only reported in 2016. Herein, we report the design and synthesis of new chiral ChB donors, as well as the catalytic activity evaluation of the 5,5′-dibromo-2,2′-dichloro-3-((perfluorophenyl)selanyl)-4,4′-bipyridine as organocatalyst. The latter is based on the use of two electron-withdrawing groups, a pentafluorophenyl ring and a tetrahalo-4,4′-bipyridine skeleton, as substituents at the selenium center. Atropisomery of the tetrahalo-4,4′-bipyridine motif provides a chiral environment to these new ChB donors. Their synthesis was achieved through either selective lithium exchange and trapping or a site-selective copper-mediated reaction. Pure enantiomers of the 3-selanyl-4,4′-bipyridine were obtained by high performance liquid chromatography enantioseparation on specific chiral stationary phase, and their absolute configuration was assigned by comparison of the measured and calculated electronic circular dichroism spectra. The capability of the selenium compound to participate in σ-hole-based interactions in solution was studied by 19F NMR. Even if no asymmetric induction has been observed so far, the new selenium motif proved to be catalytically active in the reduction of 2-phenylquinoline by Hantzsch ester.

Notizen: Eine neue bicyclische Zinn-Selen-Verbindung. Synthese und Kristallstruktur von [{Cp(CO)2Fe}3ClSn3Se4] / A New Bicyclic Tin Selenium Compound. Synthesis and Crystal Structure of [{Cp(CO)2Fe}3ClSn3Se4]

1993 ◽  
Vol 48 (7) ◽  
pp. 1009-1012 ◽  
Author(s):  
Kurt Merzweiler ◽  
Harald Kraus
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Selenium Compound ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Compound Synthesis

[{Cp(CO)2Fe}SnCl3] reacts with Na2Se in THF to form the compound [{Cp(CO)2Fe}3ClSn3Se4] 1. 1 crystallizes in the monoclinic space group P21/n with 4 formula units per unit cell. The lattice constants are α = 1435.2(7), b = 1124.4(4), c = 1972.7(12) pm, β = 94.59(4)°. According to the X-ray structure determination 1 contains a bicyclic Sn3Se4 framework.

Radioprotection by Selenium Compound

1994 ◽  
pp. 211-222 ◽  
Author(s):  
K Kumar ◽  
M Landauer ◽  
J Weiss ◽  
M Patchen ◽  
V Srinivasan
Keyword(s):  
Selenium Compound

The Organic Selenium Compound Selenomethionine Modulates Bleomycin-Induced DNA Damage and Repair in Human Leukocytes

2009 ◽  
Vol 133 (1) ◽  
pp. 12-19 ◽  
Author(s):  
Blanca Laffon ◽  
Vanessa Valdiglesias ◽  
Eduardo Pásaro ◽  
Josefina Méndez
Keyword(s):  
Dna Damage ◽  
Dna Damage And Repair ◽  
Selenium Compound ◽  
Human Leukocytes ◽  
Organic Selenium

Interaction of an Organic Selenium Compound with Human Serum Albumin: A Spectroscopic Study

2006 ◽  
Vol 114 (1-3) ◽  
pp. 301-312 ◽  
Author(s):  
Shao-Fa Sun ◽  
Ling-Li Pan ◽  
Cheng-Ming Wang ◽  
Han-Na Hou ◽  
Yi Liu
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Spectroscopic Study ◽  
Human Serum ◽  
Selenium Compound ◽  
Organic Selenium
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