ELECTRONIC-STRUCTURE OF ALKYL LEAD (IV) ACETYLIDES BY GAS-PHASE UV PHOTOELECTRON-SPECTROSCOPY AND PSEUDOPOTENTIAL CALCULATIONS

被引：3
|
作者：
ANDREOCCI, MV [1 ]
BOSSA, M [1 ]
CAULETTI, C [1 ]
STRANGES, S [1 ]
WRACKMEYER, B [1 ]
HORCHLER, K [1 ]
机构：
[1] UNIV BAYREUTH,ANORGAN CHEM LAB,W-8580 BAYREUTH,GERMANY
来源：
PHYSICA SCRIPTA | 1990年 / 41卷 / 06期
关键词：
D O I：
10.1088/0031-8949/41/6/017
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Gas-phase UV photoelectron spectra and pseudopotential calculations were used to elucidate the electronic structure of a series of alkyl lead acetylides, a trimethylsilyl-trimethylplumbyl-acetylide and bis(trimethylsilyl)butadiyne. The analysis of the results obtained, along with the comparison with previous data on tin analogues, confirmed the presence of a σ/π conjugation between the πC≡C and the σ orbitals of the metal-alkyl moieties. The ionization of the 5d pseudo-valence orbitals of Pb was observed and compared with the calculated net atomic charge on Pb. A spin-orbit effect was found in the ionization of valence MO's with significant contribution of 6p Pb orbitals. © 1990 IOP Publishing Ltd.
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页码：800 / 804
页数：5
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