The highly sterically encumbered chelating β-diketiminate ligand, [HC{C(Me)N(2,6-CHPh2-4-MeC6H2)}2](-), (Ar)L(-), has been used to prepare a series of heteroleptic three-coordinate magnesium complexes. Both the bis(imine) and imine-enamine tautomers of the ligand precursor, (Ar)LH, as well as the diethyl ether adduct of the bromide complex [(Ar)LMgBr(OEt2)], the monomeric methyl complex [(Ar)LM...

Magnesium is a chemical element with the atomic number 12, an atomic weight of 24, and the common oxidation number 12. Magnesium is an alkaline metal and the eighth most abundant element in the Earth’s crust, where it constitutes about 2% by mass, and ninth in the Universe. Magnesium is easily built up in supernova stars by the sequential addition of three helium nuclei to carbon. Magnesium ion...

Due to their good biodegradability and biocompatibility, magnesium alloys are widely favored as the potential candidate for biodegradable cardiovascular stent. However, rapid degradation limited biocompatibility in vivo remain main bottlenecks that inhibit clinical applications. The construction of chemical conversion coating on alloy surface represents one effective strategies control rate enh...

A new, straightforward and high yielding procedure to convert oleanolic acid derivatives into the corresponding δ-hydroxy-γ-lactones, by using the convenient oxidizing agent magnesium bis(monoperoxyphthalate) hexahydrate (MMPP) in refluxing acetonitrile, is reported. In addition, a two-step procedure for the preparation of oleanolic 12-oxo-28-carboxylic acid derivatives directly from Δ(12)-olea...

A terminal and unsupported chromium(III) hydroxide is reported. The terminal hydroxide is used to synthesize the first example of a heterobimetallic Ti-O-Cr compound containing an unsupported μ-oxo bridge. The heterobimetallic complex exhibits a new absorbance at 288 nm (4.32 eV), which is assigned to a metal-to-metal charge transfer (MMCT) transition.

1. The effects of food and antacid on the pharmacokinetics of tenidap were investigated in this randomised, 3-way cross-over study. 2. Twenty-one healthy young men, mean age 27.4 years, received single oral doses of tenidap sodium 120 mg at weekly intervals after either an overnight fast, with food or with 20 ml of the antacid Maalox (aluminum hydroxide 1.8 g and magnesium hydroxide 1.2 g). Pla...

Tetrabutylphosphonium hydroxide containing 40 wt% water dissolved 20 wt% cellulose at the final concentration within 5 minutes under mild stirring at 25 °C.