Unstable complexes of sandwich compounds with small molecules. Communication 3. Complexation of metallocenes of the 3d series with molecular oxygen at low temperatures

1988 ◽  
Vol 37 (1) ◽  
pp. 49-51 ◽  
Author(s):  
I. I. Grinval'd ◽  
B. V. Lokshin ◽  
N. K. Rudnevskii ◽  
V. M. Fomin
Keyword(s):  
Small Molecules ◽  
Molecular Oxygen ◽  
Low Temperatures ◽  
Sandwich Compounds

ChemInform Abstract: REVERSIBLE REACTION OF SIMPLE FERROUS PORPHYRINS WITH MOLECULAR OXYGEN AT LOW TEMPERATURES

1974 ◽  
Vol 5 (44) ◽  
pp. no-no
Author(s):  
DAVID L. ANDERSON ◽  
CHARLES J. WESCHLER ◽  
FRED BASOLO
Keyword(s):  
Molecular Oxygen ◽  
Low Temperatures ◽  
Reversible Reaction

Low-Temperature Thermocatalytic Degradation of Polyethene Films by Nano-Titanium Dioxide in Water

2014 ◽  
Vol 804 ◽  
pp. 47-50
Author(s):  
Ke Li ◽  
Xue Gang Luo ◽  
Mian Wang ◽  
Fang Wei Qi ◽  
Pei Wu ◽  
...  
Keyword(s):  
Small Molecules ◽  
Low Temperatures ◽  
Composite Films ◽  
Decomposition Temperature ◽  
Degradation Behavior ◽  
Melt Blending ◽  
Ft Ir ◽  
Branched Chains ◽  
Nano Titanium Dioxide ◽  
Scanning Electron

nanoTiO2powders were utilized as thermocatalyst for catalytic degradation of polyethylene in water. LDPE/TiO2composite films were prepared by the method of melt blending. The aging experiments were conducted in ovens under temperatures of 30 °C, 40 °C and 50 °C, respectively. The thermocatalytic degradation behavior towards the composite films was characterized by fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TG) and scanning electron microscopy (SEM). Results show that both pure LDPE films and LDPE /TiO2composite films can be degraded even under low temperatures in water. After thermal degradation for 90 days at 50 °C, the composite film with 2wt% nanoTiO2was oxidized the most acutely: the quantity of branched chains decreased to some extent and lots of small molecules were detected, the decomposition temperature was also reduced by 28.2 °C. Besides, the surface of the films became rougher than that of the film before degradation.

FT-IR Studies of the Interaction between Zeolitic Hydroxyl Groups and Small Molecules. 3. Adsorption of Oxygen, Argon, Nitrogen, and Xenon on H−ZSM-5 at Low Temperatures†

1996 ◽  
Vol 100 (10) ◽  
pp. 4154-4159 ◽  
Author(s):  
Fumitaka Wakabayashi ◽  
Junko N. Kondo ◽  
Kazunari Domen ◽  
Chiaki Hirose
Keyword(s):  
Small Molecules ◽  
Low Temperatures ◽  
Hydroxyl Groups ◽  
Ir Studies ◽  
Ft Ir

Ionic conductivity of monohydroxy alcohol liquids doped with known probe ions and analysis of the liquid structure

2020 ◽  
pp. 2150014
Author(s):  
Gui-Hua Lu ◽  
Li-Na Wang ◽  
Xing-Yu Zhao ◽  
Yu-Fen He ◽  
Yi-Neng Huang
Keyword(s):  
Ionic Conductivity ◽  
Small Molecules ◽  
High Temperatures ◽  
Low Temperatures ◽  
Nonlinear Behavior ◽  
Liquid Structure ◽  
Addition Formula ◽  
Commercial Equipment

The specific values of the conductivity [Formula: see text] and its variation with temperature [Formula: see text] of 2-pentanol and 2-methyl-1-pentanol liquids doped with different concentrations of NaI (abbreviated as 2PEN-[Formula: see text]NaI and 2M1PEN-[Formula: see text]NaI, respectively) ([Formula: see text], 1% and 5%) are measured by the commercial equipment. The results show that whether NaI is doped or not, [Formula: see text] of 2PEN-[Formula: see text]NaI and 2M1PEN-[Formula: see text]NaI all have a conductivity peak in the range of 300–350 K different from that of typical glass-formers of small molecules. In addition, [Formula: see text] goes up with increasing [Formula: see text], and the temperature corresponding to [Formula: see text] maximum increases with rising NaI content. Moreover, there is a nonlinear behavior of [Formula: see text] with [Formula: see text], i.e., with rising [Formula: see text], [Formula: see text] decreases at low-temperatures, but increases at high-temperatures. Moreover, the liquid structure and its variation with [Formula: see text] are further analyzed based on the ionic conductivity.

Darstellung, Eigenschaften und Reaktivität von 2-, 3- und 4-Chloracyl(diphenyl)phosphanoxiden / Preparation, Properties and Reactivity of 2-, 3- and 4-Chloroacyl(diphenyl)phosphane Oxides

1982 ◽  
Vol 37 (4) ◽  
pp. 407-411 ◽  
Author(s):  
Ekkehard Lindner ◽  
Michael Steinwand
Keyword(s):  
Molecular Oxygen ◽  
Low Temperatures ◽  
Partial Transformation ◽  
Complete Decomposition ◽  
H Nmr

The highly reactive chloroacyl(diphenyl)phosphane oxides RC(O)-P(O)Ph2 (2a-d, g) [R = HCCl2 (a), CCl3 (b), CH3CHCl (c), CH3CCl2 (d), ClCH2CH2 (e), CH3CHClCH2 (f), ClCH2(CH2)2 (g)] are obtained by oxidation of the thermally labile chloroacyl(diphenyl)- phosphanes RC(O)-PPh2 (1a-d, g) with molecular oxygen in ether at low temperatures. While hydrolysis leads to a complete decomposition of 2a-d, g, the oxidation of 1a, c, e-g with oxygen in the presence of HP(O)Ph2 yields the diphosphorylated alcohols RC[P(O)Ph2]2OH (3a, c, e-g). 3e, f can be interpreted as trapping products of the not isolable oxides 2e, f. In tetrachloroethene a partial transformation of 3a into the phosphinate RC[P(O)Ph2][OP(O)Ph2]H can be observed which can be followed 31P{1H}-NMR spectroscopically. In solution the alcohols 3c, e-g decompose to give HP(O)Ph2 and the corresponding phosphane oxides 2c, e-g.

scholarly journals Sterically encumbered mixed sandwich compounds of uranium(III): Synthesis and reactivity with small molecules

2018 ◽  
Vol 857 ◽  
pp. 110-122 ◽  
Author(s):  
Rachel J. Kahan ◽  
Joy H. Farnaby ◽  
Nikolaos Tsoureas ◽  
F. Geoffrey N. Cloke ◽  
Peter B. Hitchcock ◽  
...  
Keyword(s):  
Small Molecules ◽  
Sandwich Compounds

scholarly journals Charge transfer and weak bonding between molecular oxygen and graphene zigzag edges at low temperatures

Carbon ◽  
2016 ◽  
Vol 107 ◽  
pp. 800-810 ◽  
Author(s):  
D.W. Boukhvalov ◽  
V.Yu. Osipov ◽  
A.I. Shames ◽  
K. Takai ◽  
T. Hayashi ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Molecular Oxygen ◽  
Low Temperatures
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