Tris ethylene

Under certain conditions of temperature and pressure, and in the presence of free water, hydrocarbon gases can form hydrates, which are a solid formed by the combination of water molecules and the methane, ethane, propane or butane. Hydrates look like compacted snow, and can form blockages in pipelines and other vessels. Process engineers use correlation techniques and process simulation to predict the possibility of hydrate formation, and prevent its formation by either drying the gas or adding a chemical (such as tri-ethylene glycol), or a combination of both. This is further discussed in SectionlO.1. 

In the mass spectra of di- and tri-ethylene glycol, the largest peak observed is at m/z 45. Because oxygen is present, an m/z 31 ion is also expected. 

Dias, H.V.R., Fianchini, M., Cundari, T.R. and Campana, C.F. (2008) Synthesis and Characterization of the Gold(I) Tris (ethylene) Complex [Au(C2H4)3][SbF6]. Angewandte Chemie International Edition, 47, 556-559. 

In addition, water motion has been investigated in reverse micelles formed with the nonionic surfactants Triton X-100 and Brij-30 by Pant and Levinger [41]. As in the AOT reverse micelles, the water motion is substantially reduced in the nonionic reverse micelles as compared to bulk water dynamics with three solvation components observed. These three relaxation times are attributed to bulklike water, bound water, and strongly bound water motion. Interestingly, the overall solvation dynamics of water inside Triton X-100 reverse micelles is slower than the dynamics inside the Brij-30 or AOT reverse micelles, while the water motion inside the Brij-30 reverse micelles is relatively faster than AOT reverse micelles. This work also investigated the solvation dynamics of liquid tri(ethylene glycol) monoethyl ether (TGE) with different concentrations of water. Three relaxation time scales were also observed with subpicosecond, picosecond, and subnanosecond time constants. These time components were attributed to the damped solvent motion, seg-... 

Various on-line SFE-SFC applications for the analysis of polymer additives and oligomers have been reported, such as additives in PE [121] polymer additives and oligomers in PP nylon pellets and PEEK granules [15] and oligomers in PET films [103], PS [122] and PMMA [123], sometimes in quantitative fashion [15,103]. SFE-SFC has identified the cyclic trimer tris-(ethylene terephthalate) in commercially available PET film [103]. Also, SFE-SFC extraction and... 

H. Sashiwa, Y. Shigemasa, and R. Roy, Chemical modification of chitosan. 10.1. Synthesis of dendronized chitosan-sialic acid acid hybrid using convergent grafting of preassembled dendrons built on gallic acid and tri(ethylene glycol) backbone, Macromolecules, 34 (2001) 3905-3909. 

L. Duan, Y. Qiu, and H. Wang, Blue electroluminescence from a processible derivative of PPV based copolymer with tri(ethylene oxide) segments in the backbone, Synth. Met., 137 1133-1135, 2003. 

Tri-ethylene diamine Cobalt hydroxide [Co(en)3](OH)2 Cooxen Good solvating properties, extensive oxidative degradation, coloured (claret)... 

Tri-ethylene diamine zinc hydroxide [Zn(en)3)(OH)2 Zincoxen Questionable solvating power, stable only at low temperatures, slight oxidative degradation, colourless... 

Tri-ethylene diamine cadmium hydroxide [Cd(en)3](OH)2 Cadoxen and Cden3) Good solvating properties, slight oxidative degradation, clear, stable and colourless... 

Significant advances in organonickel chemistry followed the discovery of frtzws,fraws,fraws-(l,5,9-cyclododecatriene)nickel, Ni(cdt), and bis(l,5-cycloocta-diene)nickel Ni(cod)2 by Wilke et. al.1 In these and related compounds, in which only olefinic ligands are bonded to the nickel, the metal is especially reactive both in the synthesis of other compounds and in catalytic behavior. Extension of this chemistry to palladium and to platinum has hitherto been inhibited by the lack of convenient synthetic routes to zero-valent complexes of these metals in which mono- or diolefins are the only ligands. Here we described the synthesis of bis(l,5-cyclooctadiene)platinum, tris(ethylene)-platinum, and bis(ethylene)(tricyclohexylphosphine)platinum. The compound Pt(cod)2 (cod = 1,5-cyclooctadiene) was first reported by Muller and Goser,2 who prepared it by the following reaction sequence ... 

Tris(ethylene)platinum(0) is stable for several hours at 20° under 1 atm of ethylene and keeps for many weeks at -20°.6 In the absence of ethylene, decomposition to metallic platinum occurs in minutes at room temperature. The complex is quite volatile, with a vile smell, and sublimes slowly at 20° in an atmosphere of ethylene onto a cold finger at 0°. 

Dichloro-bis-ethylenediamino Perchlorate, [Co(en)2Cl2]C104 Cobalt (III) Tris-ethylene-diamtno Trinitrate, [Co(en)3](N03)3... 

Tomlinson et al (Ref 2) detd the expl props of many metal ammines and found tris-Ethylene-... 

Nitrated glycols, especially the lower members such as ethylene-, propylene, tri-ethylene-, and diethyleneglycol nitrates, are used in expl and proplnt compns. Nitrates of the higher glycols, or polyglycols, were proposed as ingredients of Diesel fuels in order to raise their "cetane number (See Vol 2 of Encycl, p C145-R Analysis and Test Methods. 

The most common functional templates are those of simple amino compounds 4, amino acids 5, and dipeptides 8 (Scheme 3). The simplest amino templates, the tris(ethylene amine) ammonia types 6, 7, and 9 first used in organic dendrimers, have only just begun to be applied in forming peptide dendrimers. Constrained and usual amino acids and heterocyclic compounds such as porphyrin 13, have also been reported.1691... 

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