REACTIONS OF LASER-ABLATED ZN AND CD ATOMS WITH O-2 - INFRARED-SPECTRA OF ZNO, OZNO, CDO, AND OCDO IN SOLID ARGON

Laser ablated Zn and Cd atoms contain sufficient excess energy to reac t directly with O-2 to produce the subject molecules. A zinc isotopic triplet at 769.2, 766.8, 764.5 cm(-1) gave a doublet with statistical isotopic oxygen confirming the identification of ZnO. A previous reson ance Raman fundamental at 769 cm(-1) is reassigned to ZnO, which sugge sts a green visible absorption for the zinc oxide molecule. A zinc iso topic triplet at 748.2, 744.4, 740.9 cm(-1) produced a triplet with st atistical isotopic oxygen and isotopic shifts appropriate for the line ar OZnO dioxide molecule. Cadmium is less reactive than zinc; infrared absorptions at 645.1 and 626.6, 625.4 cm(-1) exhibit proper oxygen is otopic behavior for assignment to CdO and OCdO and the latter showed p artially resolved cadmium isotopic splittings. (C) 1997 American Insti tute of Physics.