A molecular boron cluster-based chromophore with dual emission

Oseltamivir analog with boron cluster modulator.

Synthesis of novel neuraminidase inhibitor -- carborane ester of oseltamivir carboxylic acid is described, and its physicochemical and spectral characteristics is provided. Surprisingly, carborane analog of oseltamivir is of an order of magnitude less active than its precursor, the corresponding ethyl ester, which is the active principle of pharmaceutical preparations used in influenza prophyla...

Cobalt-centred boron molecular drums with the highest coordination number in the CoB16â‹TM cluster

Cobalt-centred boron molecular drums with the highest coordination number in the CoB16− cluster

The electron deficiency and strong bonding capacity of boron have led to a vast variety of molecular structures in chemistry and materials science. Here we report the observation of highly symmetric cobalt-centered boron drum-like structures of CoB16(-), characterized by photoelectron spectroscopy and ab initio calculations. The photoelectron spectra display a relatively simple spectral pattern...

Molecular Hydrogen emission from disks in the eta Chamaeleontis cluster

Disks in the 6 Myr old cluster η Chamaeleontis were searched for emission from hot H2 . Around the M3 star ECHA J0843.4-7905 we detect circumstellar gas orbiting at ∼2 AU. If the gas is UV-excited, the ro-vibrational line traces a hot gas layer supported by a disk of mass ∼0.03 M⊙ , similar to the minimum mass solar nebula. Such a gas reservoir at 6 Myr would promote the formation and inwards m...

a new type-ii fuzzy logic based controller for non-linear dynamical systems with application to 3-psp parallel robot

abstract type-ii fuzzy logic has shown its superiority over traditional fuzzy logic when dealing with uncertainty. type-ii fuzzy logic controllers are however newer and more promising approaches that have been recently applied to various fields due to their significant contribution especially when the noise (as an important instance of uncertainty) emerges. during the design of type- i fuz...