Affiliation:
1. Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, TX 79968
2. Centro de Ciencias Químicas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, MX
Abstract
Abstract
The tetrahedral geometry of organolead(IV) compounds can be readily transformed by using an organic ligand containing a dangling-arm oxygen functionality. The acidity of the Pb center results in so-called secondary bonding between O and Pb thereby pushing the geometry at Pb toward a trigonal bipyramidal (tbp) structure. Replacing a phenyl group by a chlorine atom dramatically enhances this phenomenon. Thus for (o-methoxybenzyl) triphenyllead (4), and (o-methoxybenzyl)diphenyllead chloride (5), the Pb–O internuclear distances are 3.362(4) and 2.845(3) Å, respectively; 83% (4) and 70% (5) of the sum of the van der Waals Pb and O radii. Within the group 14 element congeners the structural analysis of the (o-methoxybenzyl)triphenylE compounds, E = Si, Ge, Sn, and now Pb, demonstrates the relative acidities of E are Si < Ge < Sn < Pb.
Subject
Ecology, Evolution, Behavior and Systematics
Reference23 articles.
1. Modeling SN2 nucleophilic substitution at silicon by structural correlation with X-ray crystallography and NMR spectroscopy;Bassindale,;Organomet. Chem.,2003
2. Four independent structures of a pentacoordinate silicon species at different points on the Berry pseudorotation pathway;Bassindale;Chem. Commun. (Cambridge, England),2010
3. High performance hybrid solar cells sensitized by organolead halides perovskites;Cai,;Energy Environ. Sci.,2013
4. Explicit periodic trend of van der Walls radii;Chauvin,,1992
5. Reactivity of penta- and hexacoordinate silicon compounds and their role as reaction intermediates;Chuit,;Chem. Rev.,1993
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献