2751-90-8Relevant articles and documents
Reactions of tetrathiotungstate and tetrathiomolybdate with substituted haloalkanes
Lang, Jian-Ping,Kawaguchi, Hiroyuki,Tatsumi, Kazuyuki
, p. 2573 - 2580 (2002)
Reactions of [PPh4]2[WS4] in CH3CN with excess n-hexylbromide, 1,4-dichlorobutane, 2-(bromomethyl)tetrahydro- 2H-pyran) (bmthp), and 2-(bromoethyl)-1,3-dioxane (bedo) followed by extraction with THF afforded a series of alkylthiolatotrithiotungstate complexes, [PPh4][(RS)WS3] (1: R = n-hexyl; 2: R = ClCH2CH2CH2CH2; 3: R = mthp; 4: R = edo), and the analogous reactions of [PPh4]2[MoS4] in CH3CN-THF with excess bmthp and bedo also generated [PPh4][(RS)MoS3] (5: R = mthp; 6: R = edo), albeit in low yields. Treatment of [PPh4]2[WS4] in CH3CN with excess (S)-(+)-3-bromo-2-methyl-1-propanol turned out to give a trinuclear, [PPh4]2[W3S8((S)-(+)-OCH 2CH(Me)CH2Br)2] (7). Compounds 1-7 were characterized spectroscopically and the crystal structures of 2-7 were determined by X-ray analysis. All the mononuclear complexes 2-6 assume tetrahedral structures, being coordinated by one thiolate sulfur and three terminal sulfido ligands, and no additional coordination was observed by the O-donor portions of mthp or edo. The structure of 7 consists of a linear W3 spine and two (S)-(+)-OCH2CH(Me)CH2Br ligands are coordinated at the central W atom.
Solute-Solvent Interactions with Metal Chelate Electrolytes. Part III. Salting in of Tris(acetylacetonato)cobalt(III) and Benzene by Aromatic and Aliphatic Ions
Iwamoto, Etsuro,Tanaka, Yoshie,Kimura, Hirofumi,Yamamoto, Yuroku
, p. 841 - 856 (1980)
Salting effects of the metal chelate electrolytes, Br2, Br2, Br3, Br3, and Br3 (where phen = 1,10-phenanthroline, bpy = 2,2'-bipyridyl, en = ethylenediamine, and ph 1,2-propanediamine), as well as the tetraalkylammoniumbromides (Bu4NBr and Pr4NBr), tetraphenylphosphonium bromide (Ph4PBr), sodium tetraphenylborate (NaBPh4), and sodium halides on the solubility in benzene and tris (acetylacetonato) cobalt(III) in water at 15, 20, 25, and 35 deg C were studied, and the transfer free energies of the nonelectrolytes from pure water to the electrolyte solutions were obtained.Co(acac)3 is strongly salted in by Br2, NaBPh4, and Ph4PBr with large positive transfer enthalpies and entropies, weakly salted in by Bu4NBr and Pr4NBr with much less positive enthalpies and entropies and is salted out by the other electrolytes.The differences between salting effects of aromatic and aliphatic ions are discussed using the transfer enthalpy-entropy relation.
Effect of the Linking Group on the Thermoelectric Properties of Poly(Schiff Base)s and Their Metallopolymers
Li, Jiahua,Wang, Zitong,Sun, Zelin,Xu, Linli,Wong, Wai-Yeung
supporting information, p. 1911 - 1917 (2021/06/21)
As polymer-based thermoelectric (TE) materials possess attractive features such as light weight, flexibility, low toxicity and ease of processibility, an increasing number of conducting polymers and their composites with high TE performances have been developed in recent years. Up to date, however, the research focusing on the structure-performance relationship remains rare. In this paper, two series of poly(Schiff base)s with either C=C or C≡C linker and their metallopolymers were synthesized and doped with single-walled carbon nanotubes to evaluate how the linking groups affected the TE properties of the resulting composites. Apart from the effect exerted by the morphology, experimental results suggested that the linkers played a key role in determining the band gaps, preferred molecular conformation and extent of conjugation of the polymers, which became key factors that influenced the TE properties of the resulting materials. Additionally, upon coordination with transition metal ions, the TE properties could be tuned readily.
Palladium-catalyzed synthesis of functionalized tetraarylphosphonium salts
Marcoux, David,Charette, Andre B.
, p. 590 - 593 (2008/09/17)
(Chemical Equation Presented) An efficient method to synthesize functionalized tetraarylphosphonium salts is described. This palladium-catalyzed coupling reaction between aryl iodides, bromides, or triflates and triphenylphosphine generates phosphonium salts in high yields. The coupling is compatible with a variety of functional groups such as alcohols, ketones, aldehydes, phenols, and amides.