PHOTOABSORPTION CROSS-SECTIONS AND RADIATIVE PROCESSES OF SNCL4 AND SN(CH3)(4) IN THE 6-31 EV REGION

Photoabsorption and fluorescence cross sections of SnCl4 and Sn(CH3)(4 ) have been measured in the 6-31 eV region by using synchrotron radiat ion. Bands above 8 eV observed in the photoabsorption and fluorescence excitation spectra of SnCl4 have been assigned as the (np, 4d) <-- 1t (1), (4s, np, 4d) <-- 3t(2), np <-- 1e and (4s, 4p) <-- 2t(2) Rydberg transitions where n=4-6, whereas the bands observed from Sn(CH3)(4) we re too broad to assign. For SnCl4, strong emissions produced by 10.9 e V radiation have been assigned to the A(1)B(1)-X(1)A(1) and B-3(1)-X(1 )A(1) transitions of the SnCl2 radical, while several Sn I lines were observed by 21.5 eV radiation. In the fluorescence excitation spectrum of Sn(CH3)(4), a band attributable to Sn I lines was observed in the 18-23 eV region. (C) 1997 Elsevier Science B.V.