Synthesis of a stable adduct of dialane(4) (Al2H4) via hydrogenation of a magnesium(I) dimer

2010 ◽  
Vol 2 (10) ◽  
pp. 865-869 ◽  
Author(s):  
Simon J. Bonyhady ◽  
David Collis ◽  
Gernot Frenking ◽  
Nicole Holzmann ◽  
Cameron Jones ◽  
...  
Keyword(s):  
Stable Adduct

Determination of an effect of 3-chlorophenol on hydroxyl radical generation during ozonation through kinetic study in the power law type

2004 ◽  
Vol 4 (5-6) ◽  
pp. 305-311
Author(s):  
Y.-H. Han ◽  
I. Koshiishi ◽  
H. Utsumi
Keyword(s):  
Power Law ◽  
Ozone Decomposition ◽  
Oh Radical ◽  
Catalytic Intermediates ◽  
Stable Adduct ◽  
Solution Proceeds ◽  
Radical Generation ◽  
Power Law Equation ◽  
The Relationship

Ozone decomposition in aqueous solution proceeds through a radical type chain mechanism. These reactions involve the very reactive and catalytic intermediates hydroxyl (OH) radical, O2− radical, HO2 radical, OH−, H2O2, etc. OH radical is proposed as an important factor in the ozonation of water. In the previous study, generation of OH radical in the ozonation of water containing 3-chlorophenol was mathematically evaluated. In this study, we estimated the kinetic equation for the effect of 3-chlorophenol on OH radical generation during ozonation using the power law equation, in order to analyze it more correctly. The OH radical was trapped with a 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) as a stable adduct, DMPO-OH. The relationship between the ozone concentration, 3-chlorophenol content, and the initial velocity (ν0) of DMPO-OH generation was analyzed mathematically, and the following equation was obtained: ν0 (10−6 M/s)=(1.58×10−5)×[3-chlorophenol (10−6 M)]×[ozone (10−6 M)]2.40+(3.09×10−5)×[ozone (10−6 M)]1.72. The equation fitted very well with the experimental results, and square of the correlation coefficient was larger than 0.9.

Fabrication of the stable adduct CdS/CTAB/Clay with sandwich-like nanostructures

2006 ◽  
Vol 8 (5) ◽  
pp. 661-668 ◽  
Author(s):  
Xuchu Ma ◽  
Fen Xu ◽  
Liyong Chen ◽  
Yi Du ◽  
Zude Zhang
Keyword(s):  
Stable Adduct

Electron impact studies. CXVIII. An ion cyclotron resonance study of the reactivity of negative ions derived from ethenetetracarbonitrile. Anionic polymerization in the gas phase

1977 ◽  
Vol 30 (10) ◽  
pp. 2161 ◽  
Author(s):  
JH Bowie
Keyword(s):  
Gas Phase ◽  
Electron Impact ◽  
Anionic Polymerization ◽  
Cyclotron Resonance ◽  
Negative Ions ◽  
Ion Cyclotron Resonance ◽  
Impact Studies ◽  
Stable Adduct ◽  
Ion Cyclotron

.The [M·–l CN·I- species from ethenetetracarbonitrile (tetracyanoethylene) reacts with neutral ethene- tetracarbonitrile to give the stable adduct C11N7-. The decomposing form of this adduct eliminates C2N2 to produce C,9N5- which may react with ethenetetracarbonitrile to yield C15N,9-. Analogous anionic polymerization reactions yield a number of detectable peaks in the i.c.r. spectrum of tetra- cyanoethylene, with the structures of the ions possibly corresponding to a. Diagram Polymerization of this type can also be initiated by other nucleophiles including Cl-, Br-, I- and CF3CO2-.

Effect of metal ions on the stable adduct formation of 16α-hydroxyestrone with a primary amine via the Heyns rearrangement

Steroids ◽  
1999 ◽  
Vol 64 (4) ◽  
pp. 252-258 ◽  
Author(s):  
Shinichi Miyairi ◽  
Kaoru Maeda ◽  
Tomoyuki Oe ◽  
Toyoaki Kato ◽  
Akira Naganuma
Keyword(s):  
Metal Ions ◽  
Primary Amine ◽  
Adduct Formation ◽  
Stable Adduct

Abinitiotheoretical study of arsine and trimethylgallium: The formation of GaAs by a stable adduct

1992 ◽  
Vol 96 (5) ◽  
pp. 3723-3731 ◽  
Author(s):  
Richard M. Graves ◽  
Gustavo E. Scuseria
Keyword(s):  
Stable Adduct

scholarly journals Hereditary tyrosinemia. Formation of succinylacetone-amino acid adducts.

1985 ◽  
Vol 162 (3) ◽  
pp. 1060-1074 ◽  
Author(s):  
S Manabe ◽  
S Sassa ◽  
A Kappas
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
High Performance ◽  
Normal Subjects ◽  
Proteinase K ◽  
Stable Adduct ◽  
Schiff Base Formation ◽  
Tlc Analysis ◽  
Hereditary Tyrosinemia ◽  
Base Formation

Succinylacetone (SA) (4,6-dioxoheptanoic acid) is an abnormal metabolite produced in patients with hereditary tyrosinemia as a consequence of an inherited deficiency of fumaryl acetoacetate hydrolase activity. Patients with this disease are associated with a number of abnormalities, including aminoaciduria, proteinuria, liver failure, commonly hepatoma, and decreased GSH concentration in the liver. In the course of our studies of tyrosinemia, we found that the urine of patients with this disorder contains material(s) that absorbs light at 315 nm. We investigated the nature of the 315 nm material in detail. SA was found to react with amino acids and protein nonenzymatically, to form stable adducts at physiological temperature and pH. All SA adducts with amino acids and/or proteins exhibited an absorption peak at 315 nm. Although all amino acids reacted with SA, the most reactive amino acid was lysine (Lys), followed, in order, by glycine, methionine, phenylalanine, serine, alanine, and glutamine. SA-adducts were unstable at pH below 6, while they were made considerably more stable after reduction with NaBH4, suggesting that SA forms an adduct via Schiff base formation. High-performance liquid chromatography (HPLC) analysis of urines from patients with tyrosinemia revealed the existence of SA-glycine, SA-methionine, SA-tyrosine, and SA-phenylalanine. After digestion of urines with proteinase K, three more HPLC peaks appeared, which all corresponded to SA-Lys adducts. TLC analysis of SA-Lys showed that SA-Lys could form as many as seven different adducts. No SA-adduct peaks were observed in HPLC in urines from normal subjects, patients with other forms of aminoaciduria, or patients with the nephrotic syndrome. In addition to amino acids and proteins, SA reacted with reduced glutathione (GSH) and formed a stable adduct. These findings suggest that SA adduct formation with amino acids, GSH, and proteins is a significant process occurring in tyrosinemia, and may account for certain of the pathologic findings in this hereditary disorder.

Characterization and X-Ray Structure of the Adduct Formed Between Triphenyltin Chloride and Dicyclohexylphosphinyl-N-methyl(thioformamide): Ph3Sn[Cy2P(O)C(S)N(H)Me]Cl

1995 ◽  
Vol 48 (9) ◽  
pp. 1659 ◽  
Author(s):  
VJ Hall ◽  
ERT Tiekink
Keyword(s):  
Oxygen Atom ◽  
Chlorine Atom ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Stable Adduct ◽  
Cell Dimensions ◽  
Triphenyltin Chloride ◽  
Unit Cell Dimensions

The reaction of Ph3SnCl and Cy2P(O)C(S)N(H)Me yields the air-stable adduct Ph3Sn[Cy2P(O)-C(S)N(H)Me]Cl which features a trigonal bipyramidal tin atom geometry with a chlorine atom [Sn-Cl 2.4236(9)Ǻ] and an oxygen atom [Sn-O 2.523(2)Ǻ], derived from a monodentate phosphinyl(thioformamide) ligand, occupying the axial positions. The pale-yellow crystals are monoclinic, space group P21/c with unit cell dimensions a 10.050(1), b 16.501(1), c 19.273(1) Ǻ, β 102.12(1)°, Z 4; the structure was refined to final R 0.031 by using 5384 reflections.

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