High resolution photoelectron studies: Electric field gradient splittings of Cd and Sn 4d energy levels in organometallic compounds

✍ Scribed by G.Michael Bancroft; Ian Adams; David K. Creber; Dean E. Eastman; Wolfgang Gudat

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 447 KB
• Volume: 38
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(76)80261-8

✦ Synopsis

High resolution photoelectron spectra of MezCd (Me = CH3) in tne gas phase, and organotin compounds in the solid state show that the 4dg final state produced in the photoelectron expcrimcnt splits in the prcsencc of lignd fields. Only the I? 2 crystal field term (the term that transforms like the electric field gradient) contributes to the splitting. The 4&/z splitting in McZCd and rrons-hle~Sn(BzBz)2 (RzBz = anion of dibenzoylmethane) arc 0.21 ? 0.01 cV and 0.35 f 0.1 cV rcapcctively. 'file observed 4d5/2 linewidth for Ph4Sn (Ph = C6H5) of 0.67 cV indicates that very narrow linewidths can be obtained on molecular nonconducting solids. The constant spin-orbit splitting values, combined with nuclear field gradients from Miissbauer and NQR measurements,

strongly indicate that a previously proposed explanation for the increase in apparent spinorbit coupling in Cd metal is untenable.