The perfluorinated boraindene was synthesized and fully characterized. Both computational and crystallographic data show that is antiaromatic. Compound was shown to react reversibly with H2 and to catalyse the hydrogenation of cyclohexene. The mechanism of catalysis was probed experimentally and computationally.

Identification of honey origin based on specific chemical markers is important for authentication. This study aimed to differentiate Malaysian stingless bee from different entomological origins (Heterotrigona bakeri, Geniotrigona thoracica and Tetrigona binghami) physicochemical properties (pH, moisture content, ash, total soluble solid electrical conductivity) volatile compound profiles. The d...

A FK506 analogue containing a non-natural starter unit was obtained through mutasynthesis by feeding cultures of Streptomyces sp. KCTC 11604BP fkbO deletion mutant with 3-cyclohexene-1-carboxylic acid. The structure of the new compound, 32-dehydroxy-FK506, and its biological activities were determined.

The potential energy surfaces for ring-closing metathesis reactions of a series of simple α,ω-dienes which lead to 5-10 membered ring products, have been explored using density functional theory methods. We have investigated both the conformational aspects of the hydrocarbon chain during the course of the reactions, as well as the stationary structures on the corresponding potential energy surf...

Reacting (PNP)Ti[double bond, length as m-dash]CH(t)Bu(CH2(t)Bu) with 2,2'-bipyridine (bipy) in cyclohexane or heptane results in dehydrogenation, cleanly producing cyclohexene and 1-heptene, respectively, and a Ti(II) intermediate that is trapped by bipy to produce [(PNP)Ti(III)(CH2(t)Bu)(bipy˙(-))] (1). This titanium(ii) intermediate reduces the bipy ligand upon coordination to form a Ti(III)...

The hygroscopicity and oxidation level of secondary organic aerosol (SOA) produced in an atmospheric simulation chamber were measured as a function volatility. experimental setup combines thermodenuding, isothermal dilution, mass spectroscopy, size-resolved cloud condensation nuclei measurements to separate the SOA by volatility then measure its physical (hygroscopicity via parameter, κ) chemic...