Stephen J. Obrey

Instrumented Burn Tube: Experimental Observations and Analysis of Data

experimental techniques to measure the various properties of nanoenergetic systems. Among these techniques, the instrumented burn tube is a simple experiment that is capable of obtaining data related to the combustion of these materials. The purpose of this paper is to review the current state of the conned burn tube experiment, including the drawbacks of the technique and possible remedies. As this report is intended to focus on the specic experimental technique, data from many dierent energetic materials and experimental congurations will be presented. The qualitative and quantitative data that can be gathered using conned burn tube experiments include burning rate, total impulse, and pressurization rate. All of these measurements lend insight into the combustion properties and mechanisms of specic nanoenergetic powders.

Interplay of metal–allyl and metal–metal bonding in dimolybdenum allyl complexes

Addition of PMe3 to Mo2(allyl)4 afforded Mo2(allyl)4(PMe3)2, in which two of the allyl groups adopt an unprecedented micro2-eta1,eta3 bonding mode; theoretical studies elucidate the roles of the sigma- and pi-donor ligands in the interplay of metal-allyl and metal-metal bonding.