IR spectra are plotted from anilides of 1-piperidine carboxylic acids C5H10N(CH2)n CONHC6H4R in CHCl3 and CDCl3 solutions. In the cases of n = 1 and n = 4, weak intramolecular (NH⋯N) hydrogen bonds are formed. An asymmetrical energy surface occurs and the proton is present at the N of the an...

The 1:1 complex of protonated piperidine-4-carboxylic acid (P4C+H) with hydrogen squarate anion (HSQ−) was prepared and characterized by a single-crystal X-ray diffraction, B3LYP/6-311++G(d,p) calculations, FTIR and NMR spectroscopies. The crystals are orthorhombic, Pbcn space group. The molecul...

IR spectra are plotted from C5H10N(CH2)nCOOH, n = 1–4, in DCCl3 solutions. From the carboxylic bands, information is obtained on whether the proton is present at the carboxylic group or at the N atom. Furthermore, an IR continuum indicates the presence of easily polarizable hydrogen bonds, Wi...

(±)-Piperidine-2-carboxylic acid ((±)-pipecolic acid) has been resolved by the fractional crystallisation of diastereomeric palladium(II) complexes containing orthometallated (S)-(−)-1-[1-dimethylamino)ethyl]naphthalene. The enantiomers of the acid were liberated from the individual configurat...

The 1:1 complex between the zwitterionic piperidinium-3-carboxylate (P3C) and salicylic acid (SAL), P3C·SAL, has been characterized by single crystal X-ray analysis, FTIR and NMR spectroscopy, and by DFT calculations. The crystals are orthorhombic, space group Pbca, with a = 11.6477(7), b = 9.1...

In this work, we will report a combined experimental and theoretical study on molecular and vibrational structure of 4-bromo-1-(ethoxycarbonyl)piperidine-4-carboxylic acid (BEPA). BEPA has been characterized by FT-IR, FT-Raman, 1H NMR, 13C NMR and UV spectroscopy. The FT-IR and FT-Raman spectra ...

The 1:1 complex of piperidine-4-carboxylic acid (isonipecotic acid, P4C) with 2,6-dichloro-4-nitrophenol (DCNP), has been investigated by single-crystal X-ray analysis, Raman and FTIR spectroscopy and theoretical calculations. The hydrogen-bonded-ion-pair complex is observed in the crystalline s...

Newly designed perfluorinated phosphine-imine ligands (3a-c) have been synthesized from the 3-(heptadecafluorooctyl)aniline and 2-(diaryl)phosphinobenzaldehyde (diaryl: −Ph2, 2a; −(3,5-(CH3)2Ph)2, 2b; −(3,5-(CF3)2Ph)2, 2c) and complexed with dichloro(1,5-cyclooctadiene)palladium(II) to form supe...

A novel diamine, bis(3-aminophenyl)-2,3,5,6-tetrafluoro-4-trifluoromethylphenyl phosphine oxide (mDA7FPPO), was synthesized via Grignard reaction, followed by nitration and reduction. The monomer was characterized by FT-IR, NMR and melting point apparatus, and utilized to prepare polyimides with...

The preparation, properties, and reactions of tris[(trimethylsilyl)methyl]plumbylmagnesium chloride are described. Tetrakis [(trimethylsilyl)methyl] lead and several related new silicon-substituted organolead compounds and their proton magnetic resonance spectra are reported.

N-Phenylsulfonimidoyl chloride reacts with trimethylsilylethene in the presence of aluminum chloride to give two product benzothiazines, one of which has been desilylated. The silylated benzothiazine can be deprotonated and alkylated, sometimes with very high diastereocontrol. Upon treatment wit...

Isotactic poly(propene) (PP) having a terminal vinylidene group was prepared with the ethylenebis (4, 5, 6, 7-tetrahydro-1-indenyl)zirconium dichloride-methylaluminoxane catalyst system. The polymer produced was treated with borane-dimethylsulfide in toluene, followed by reacting with pentane-1,...

The use of alcohols in diesel engines is an alternative way of reducing dependence on diesel fuel. Specifically, higher alcohols such as n-butanol (nB) and 1-pentanol (Pn), which consist of high carbons and can be produced from mainly non-edible sources, can directly be mixed with diesel fuel wh...

Diesel, n-pentanol, and methanol can form stable, transparent and homogenous fuels. Combustion and emission characteristics of diesel, n-pentanol and methanol blends are investigated on a common rail diesel engine. Test fuels are noted as D100 (diesel), D80P20 (20% n-pentanol and 80% diesel, by ...

Stable species and saddle points on the C5H11O potential energy surface relevant for 1-pentanol pyrolysis and combustion have been determined starting from the terminal adduct of the OH + 1-pentene reaction. A large number of stationary points were explored automatically with the KinBot software...

Spray characteristics of biodiesel-pentanol blends (with 0 v/v%, 10 v/v%, 20 v/v%, 30 v/v% and 40 v/v% pentanol) were investigated and compared with those of diesel in this work. Experiments under a variety of working conditions were carried out on a common-rail system and a constant volume cham...

High pressure oxidation of 3-pentanol is investigated in a jet-stirred reactor and in a shock tube. Experiments in the reactor were carried out at 10 atm, between 730 and 1180 K, for equivalence ratios of 0.35, 0.5, 1, 2, 4 and 1000 ppm fuel, at a constant residence time of 0.7 s. Reactant, prod...

Accurate experimental data of vapor-liquid equilibria (VLE) and excess enthalpies are reported for four binary systems: (1-pentanol + 1-hexene), (2-pentanol + 1-hexene), (1-pentanol + 1,2,4-trimethylbenzene) and (2-pentanol + 1,2,4-trimethylbenzene). An isothermal total pressure cell was used fo...

The objective of this work is to study the addition of n-pentanol with the Calophyllum Inophyllum biodiesel to evaluate the performance, emission and combustion characteristics. Five different fuel blends are prepared by varying the n-pentanol fraction (10%, 20%, 30%, 40% and 50%) on volume basi...

Experimental study of 1-pentanol addition and EGR rates on the combustion, performance and emission of a CRDI diesel engine is carried out in this work. 1-Pentanol being a higher alcohol has fuel properties comparable to diesel. Experiments were conducted on a 4 stroke two cylinder, CRDI diesel ...