A general and highly selective method for the synthesis of carbohydrate-derived (Z)-vinyl halides and silanes is described. This reaction takes place through a β-elimination process of sugar-derived α-halomethylcarbinol acetates promoted by samarium diiodide. Starting materials have been easil...

Normal coordinate analysis of a molecule of the type XY7 (point group D5h) has been carried out using Wilson's FG, matrix method and the results have been utilized to calculate the force constants of IF7 from the available Raman and infrared data. Some of the assignments made previously by ...

Solutions of sodium periodate or periodic acid in anhydrous hydrogen fluoride contain HOIOF4 as well as other unidentified fluorine containing species. Partial hydrolysis of iodine heptafluoride yields first IOF5 and with increased water addition, HOIOF4, which is dissociated to produce the IO2F...

The energy of combustion of iodine in fluorine was measured in a bomb calorimeter and the standard enthalpy of formation of liquid iodine pentafluoride, ΔHfo(IF5, 1, 298·15 K), was calculated to be −(210·81 ± 0·39) kcal/mole. The combustion products contained variable quantities of gaseous ...

The reaction of the diselenide dication salt, 1,5-diselenoniabicyclo[3.3.0]octane bis(hexafluorophosphate) (1) with 1,5-diselenacyclooctane (2) gave the corresponding cation radical by single-electron transfer. The dication salt 1 was reduced upon treatment with fluorenyl-lithium, Na2S, NaBH4; i...

Reactions of nitrosonium hexafluorophosphate or tetrafluoroborate with olefins having aryl groups at an olefinic carbon atom at low temperature in acetonitrile afforded 4H-5,6-dihydro-1,2-oxazines with two aryl groups at C-4 and C-6 in fair to good yields.

This paper reports on syntheses and characterization of chlorotribromo(O,O-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum(IV) [II], dichlorodiiodo(O,O-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum(IV) [III], and dichloro(O,O-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum...

A study of the photoaquation of hexachloroplatinate(IV) to pentachloroaquoplatinate(IV) in 1F perchloric acid medium has revealed that the overall quantum yield for this reaction is substantially greater than unity for irradiation at 270 and 365 nm, except when dissolved chlorine is present, and...

Four platinum(IV) complexes, trans,trans-dichlorobis(N,N-dimethylglycinato)platinum(IV), trans,trans-[Pt(dmgly)2Cl2] (1) and trans,trans-dibromobis(N,N-dimethylglycinato)platinum (IV), trans,trans-[Pt(dmgly)2Br2] (2), as well as, trans,trans-dichlorobis(N-methylglycinato)platinum(IV), trans,tran...

The cytotoxicities of two platinum(IV) complexes of formula [PtX2(eddp)] · nH2O (eddp=ethylenediamine-N,N′-di-3-propionate, X=chloro [I] or bromo [II], n=1 or 1.24) are reported. The complexes have been obtained by direct reaction of potassium hexahaloplatinate(IV) with H2eddp · 2HCl followed...

The aim of this study was the fabrication of polysulfone membranes with antimicrobial properties. The strategy employed was based on the use of carbon nanofibers (CNF) presenting carboxyl functional groups (CNFCOOH) and silver nanoparticles (AgNPs). The materials were investigated by XPS, SEM, T...

The development of antiseptics and medical products (bandaging materials, sponges, etc.) based on silver nanoparticles is an essential task due to the growing resistance of pathogenic microorganisms to medicines long used in clinical practice. Using silver nanoparticles for the same purpose is p...

The development of new catalytic methodologies to synthesize heterocyclic fine chemicals using carbon dioxide as a synthon has attracted considerable attention. Herein, we report the silver(I)-catalyzed carboxylative cyclization of a variety of alkynic hydrazones with carbon dioxide to produce t...

In this paper, we present the data on silver extraction from nitrate solutions with the disulfide of bis(2,4,4-trimethylpentyl)dithiophosphinic acid (L) in toluene. Based on the analysis of the extraction data and the IR and electronic absorption spectra of the extracts, it was concluded that si...

Four dysprosium (Dy) single carboxylates, a formate, a propionate, a butyrate and an oxalate have been synthesized and structurally characterized. The structure of Dy(HCO2)3 (1) contains nine-fold coordinated Dy polyhedra in perfect tricapped trigonal prisms. They are linked through trigonal O a...

The distribution behavior of ion associates of PtCl62− with quaternary ammonium cations (Q+) between aqueous phase and two organic phases (chloroform and carbon tetrachloride) was examined, and the extraction constants (log Kex) were determined. A linear relationship was found between log Kex an...

Expressions are derived for the initial relaxation rate 1/T1 of protons and deuterons of nontunnelling NH4 and ND4 groups reorienting about various symmetry axes in solids. The reorientation rates are modified by a trigonal, tetragonal or monoclinic distortion of the predominantly cubic hinderin...

A new method has been developed for analyzing 137Cs in a small volume of seawater. Ammonium 12-molybdophosphate (AMP) was used two times during pretreatment procedure. The first step was to adsorb 137Cs in seawater samples into AMP in order to reduce sample volume, and the second was to remove 8...

The reaction between ionic liquid [Cat]+Cl− (where Cat stands for 1-butyl-3-methylimidazolium, 1-butyl-2,3-dimethylimidazolium or 1-butyl-4-methylpyridinium) and the metal precursor ([PtCl2(cod)], PtCl4, K2[PtCl4] or K2[PtCl6]) yielded two groups of derivatives: [Cat]+[PtCl4]− and [Cat]+[PtCl6]−...

Diorganotin(IV) complexes of general formula R2SnL (R = Me, 1; Bu, 2; Ph, 3) with tridentate ONO donor Schiff base ligand were synthesized and structurally characterized by adopting various spectroscopic (IR, 1H 13C and 119Sn NMR, UV–Vis, ESI MS, XRD) and analytical techniques. In vitro DNA bin...