학술논문
Formation of PbS materials from lead xanthate precursorsCCDC reference numbers 812549–812553for 1–3, 5and 6, respectively. For crystallographic data in CIF or other electronic format see DOI: 10.1039/c1dt10273g.
Document Type
Article
Author
Source
Subject
*LEAD compounds
*XANTHATES
*CRYSTALLOGRAPHY
*ETHYLENEDIAMINE
*ORGANIC synthesis
*LIGANDS (Chemistry)
*CHEMICAL structure
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Language
ISSN
1477-9226
Abstract
Six lead xanthate adducts Pb(S2COR)2.L [R = Et, nBu, L = bipy, TMEDA (tetramethylethylenediamine), PMDETA (pentamethyldiethylenetriamine)] have been synthesised and the structures of all, save Pb(S2COBun)2.TMEDA (4) which is an oil, determined. Pb(S2COEt)2.TMEDA (3) is seven-coordinate at lead through three chelating ligands and one weak intermolecular PbS interaction. Both Pb(S2COR)2.bipy [R = Et (1), nBu (2)] are dimers in which one xanthate is terminal and the other μ2bridging at each sulphur, generating an eight-coordinate lead when the bipy donor is included. Both Pb(S2COR)2.PMDETA [R = Et (5), nBu (6)] are seven-coordinate at lead by virtue of two bidentate chelating xanthate ligands and a tridentate PMDETA; there are no intermolecular interactions. Trends in the 207Pb NMR chemical shifts mirror the changes in the intramolecular coordination number across the series. Pb(S2COEt)2.TMEDA (3) has been used to deposit PbS films on glass, Mo-coated glass and Si by AACVD. Pb(S2COEt)2also generated PbS nanocubes when decomposed under an autogenerated pressure. [ABSTRACT FROM AUTHOR]