A very mild method for the preparation of synthetically useful phosphonic dichlorides has been developed and its application toward the synthesis of 2-alkyl-2-oxo-1, 3, 2-dioxophosphorinanes and 1, 3-dimethyl-2-alkyl-2-oxo-1, 3, 2-diazaphospholidines is reported.

The structure and conformational stability of vinyl phosphonic dichloride and difluoride were investigated using ab initio calculations at DFT-B3LYP/6-311++G∗∗ level. From the calculations the molecules were predicted to exist in cis⇔gauche conformational equilibrium with the cis (phosphonic oxy...

The present study was an attempt to investigate the neuromodulatory potential of Ginkgo biloba extract (GBE) against hippocamapal structural and functional damages induced by trimethyltin (TMT) a potent neurotoxicant. Male Balb/C mice were administered with Ginkgo biloba extract for 14 days at a...

Trimethyltin (TMT), a neurotoxic organotin compound, is selectively localized within the limbic system. The mechanisms of TMT-induced hippocampal neurodegeneration include inflammatory responses, oxidative stress, and neuronal death. Increasing evidence shows that the inflammatory response, medi...

Despite the predictable relation between the structure of the silanediol group and its biological activity (some peptidomimetics containing the R′R″Si(OH)2 group have proven efficiency as inhibitors of aspartyl and metalloproteases), few theoretical or experimental works deal with the study of...

Although dietary silicon (Si) is recognized to be an important factor for the growth and development of bone and connective tissue, its biochemical role has yet to be identified. The predominant Si-containing species in blood and other biofluids is orthosilicic acid, Si(OH)4. Dimethylsilanediol,...

Equilibrium geometries of methylsilanetriol monomer and dimers are obtained at B3LYP/DZP + diff level and differences in electron density distribution and in hydrogen bonding between them and analogous structures of dimethylsilanediol are discussed. Five isomers are found as energy minima in the...

As found by EPR spectroscopy, the decay of methyl radicals in the test compounds upon X-ray irradiation at 77 K resulted from radical-center transfer rather than radical combination; the rate constants of decay of methyl radicals in polydimethylsiloxane and its structural analog dimethylsilanedi...

Dimethylsilanediol (DMSD) is related to the most important bifunctional building block for silicone oligomers and polymers, although DMSD itself is not used in any commercial applications. The environmental release of DMSD is linked to the hydrolytic degradation of other silicone materials in so...

The light induced addition of trimethylgermanium hydride to fluoroethylenes has been studied. Reactant concentration, light intensity and temperature have been varied. The results are interpreted in terms of a chain mechanism in which reaction (2) is reversible. The main chain termination (CH3)3...

The microwave spectra of five isotopic species of chlorodimethylsilane have been investigated in the region from 5 to 20 GHz using a Fourier transform microwave spectrometer. The molecular structure of (CH3)2SiHCl obtained by the substitution method is the following one: rs(Si–Cl)=2.0604(10)Å,...

This study aimed to characterize the kinetics and mechanism of the phase transformation from lead chloride to lead carbonate in ammonium bicarbonate solution. The dechlorination rate of PbCl2 was consistently high: it increased with increasing concentrations of NH4HCO3 and decreased only moderat...

The induction of Fusarium wilt by continuous cropping has become a severe problem for watermelon cultivation around the world. Here, the feasibility and underlying mechanism of soil fumigation with ammonium bicarbonate (AB) or metam sodium (MS) under high temperature (HT) were investigated for t...

Ammonium bicarbonate (ABC) liposomes can only release drugs extracellularly while intracellular drug delivery could be more promising than extracellular release in chemotherapy. The purpose of this work was to endow the ABC liposomes with tumor-triggered targeting effect, to realize the intracel...

Source-separated urine is a promising stream for nutrient capture using electrochemical technologies. It contains the majority of macronutrients present in municipal wastewater in a concentrated, high ionic conductivity liquid and in N:P:K ratios suitable for agricultural application. The purpos...

In this study, a calixarene based polymer inclusion membrane was employed for the removal of Cr(VI) from chrome plating bath water. The prepared polymer inclusion membrane was characterized by using Fourier transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM) and contact angle m...

A novel experimental method was developed through a ball-on-disk tribometer to study the friction and wear behaviour of a chrome steel at temperatures of 25, 200 and 500 °C. Water-based nanolubricants containing different concentrations of nano-TiO2 from 0.4 to 8.0 wt% were used to investigate ...

A biodegradable film based on gelatin extracted from chrome leather scrap was studied in this paper. According to the results of a variety of characterization, the extracted gelatin contains 13 kinds of amino acid; the chrome content is 30 mg/kg, mineral and salt content are both at low levels a...

Conventional chromic acid anodizing (CAA) with dichromate seal provides both superior corrosion protection and strong adhesion without significant fatigue debit, yet hexavalent chrome is toxic and needs to be replaced. Nickel acetate seal removes most of Cr (VI) from the CAA coating. Thin Film S...

In this study, we have designed and synthesized novel betaine dyes with clear structural confirmation using 1H and 13C NMR spectroscopy, ESI-MS and UV–Vis analyses. For these betaines, we investigated their hydro-, iono-, thermo- and solvato-chromic sensor properties through UV–visible spectra...