TMAS tetramethylammonium

TMA = tetramethylammonium = ethylene oxide, x-mer. Source P. Mukeijee and K.J. Mysels, Critical Micelle Concentrations of Aqueous Surfactant Systems, NBS, Washington (1971). 

P.Y. Zavalij, T. Chirayil, and M.S. Whittingham, Layered tetramethylammonium vanadium oxide [N(CH3)4]V307 by x-ray Rietveld refinement, Acta Cryst. C53, 879 (1997) tma - tetramethylammonium [N(CH3)4]. The material in a form of a black crystalline powder was prepared by hydrothermal treatment at 185°C of a mixture of V2O5, tmaOH, and LiOH taken in 1 2 1 molar ratio and acidified with CH3COOH to pH = 6,5. 

PhIO] = iodosylbenzene PPO = polypropylene oxide TBA, THA, THA = tetra-n-butylammonium, tetra-n-hexylammonium, and tetra-n-heptylammonium, respectively TMA — tetramethylammonium ... 

DP = dipolar aprotic solvent NMP = iV-methyl pyrrolidinone OAAT = 2-hydroxy-4,6-diamino-.s -triazine OIET = 2-hydroxy-4-(isopropylamino)-6-(ethylamino)-5-triazine OOAT = 2-hydroxy-4-hydroxy-6-amino-s-triazine PS = petroleum sulfide TBA = tetra-n-butylammonium TEA = tetraethylammonium TEOS = tetramethylorthosilicate TMA = tetramethylammonium TMU= tetramethylurea. c For reactions photoca-talyzed by POMs under anaerobic conditions, the reduced POM resulting from photooxidation of the substrate is reoxidized by reduction of protons generated in this initial substrate photooxidation step, forming H2. 

Figure 6.26 Principle of production of highly pure tetramethylammonium hydroxide by membrane electrolysis. A anion exchange membrane C cation exchange membrane TMA+ tetramethylammonium ions.

PfjN = Tripropylamine, TPA = Tetrapropylammonium, TMA = Tetramethylammonium, PrjNH = Di-rt-propylamine, iPf2NH = Di-isopropylamine, Quin = Quinuclidine, TEA = Tetraethylammonium, CHXNHj = Cyclohexylamine, DEEA = N,N-diethylethanolamine, Pip = Piperidine. 

Figure 15.9 Illustration of the high cathodic strains seen with larger cations in a PPy actuator formed in the presence of an emulsion TMA —tetramethylammonium, TEA —tetraethylammonium, TBA —tetrabutylammonium. (Reprinted with permission from Chemistry Letters, Improved cathodic expansions of electrochemomechanical behavior in polypyrrole films electrodeposited from Aerosol OT emulsion by W. Takashima, S. S. Pandey and K. Kaneto, Chem. Lett., 33, 8, 996-997. Copyright (2004) Chemical Society of Japan)...

TMA, tetramethylammonium ion (chloride anion, unless indicated otherwise). For practical purposes the... 

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