The structure of the weakly bound complex HCl BF3 has been determined by molecular beam electric resonance spectroscopy. The molecule is a near prolate symmetric top with the chlorine atom 3.17 Å above the boron atom, on or very near the BF3 threefold axis. The B–Cl–H angle is close to 90°. The spectroscopic constants for the H35Cl11BF3 isotope are (B+C)/2=1774.117(4) MHz, DJ=5.6(5) kHz, eqQa(35Cl)=+25.761(8) MHz, eqQa(11B)=+2.672(25) MHz, and μa=0.484(5)D.
By coupling a well-stirred microjet reactor with Vacuum Ultraviolet (VUV) photoionizaticn and a time of night mass spectrometer (TOF-MS), we have developed a useful technique for studying hydrocarbon combustion and pyrolysis kinetics. The reaction occurs in a microjet reactor which allows immediate free jet expansion into vacuum, preserving trace non-equilibrium reaction intermediate species. The detection of these products with minimal fragmentation using single photon VUV ionization allows the direct determination of reaction intermediate parent species. simplifying the identification of probable reaction pathways. Preliminary results show products from the pyrolysis of ethyl acetylene at temperatures from 300-1600 K for ms reaction times. These results illustrate the advantages of using VUV-ionization mass spectrometry for the simultaneous detection of a wide-spectrum of pyrolysis and combustion products, especially where complex mixtures of hydrocarbons at ppm levels are present.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.