title: Cavity ringdown laser absorption spectroscopy and time-of-flight mass spectroscopy of jet cooled platinum silicides.
abstract: The cavity ringdown technique (CRLAS) has been employed to measure the gas phase absorption spectrum of the platinum silicide molecule in the 350 nm region.  All nine of the measured rovibronic bands are assigned to a single 1 sigma-1 sigma electronic transition, with a ground state vibrational frequency of omega "e = 549.0(3) cm-1, and a bond length of r"0 = 2.069(1) angstroms.  The results of this study are compared with experimental data for the coinage metal silicides.  Additionally, time-of-flight mass spectrometric results indicate that a variety of polyatomic metal silicides are formed in our molecular jet expansion.
authors.affiliation: Department of Chemistry, UC Berkeley, California 94720, USA.
authors.forename: J B
authors.initials: JB
authors.lastname: Paul
authors.forename: J J
authors.initials: JJ
authors.lastname: Scherer
authors.forename: C P
authors.initials: CP
authors.lastname: Collier
authors.forename: R J
authors.initials: RJ
authors.lastname: Saykally
mesh_terms: D007834:Lasers; D013058:Mass Spectrometry / Q000379:methods*; D008670:Metals / Q000737:chemistry; D015394:Molecular Structure; D055585:Physical Phenomena; D010825:Physics; D017671:Platinum Compounds; D017655:Silicon Compounds
chemical_list: D008670:Metals; D017671:Platinum Compounds; D017655:Silicon Compounds