id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
vh53ws87t3d	Iliya Todorov	Aromatic, conjugated and polymeric species of Sn in the solid state.	2008		.txt	text/plain	270	9	39	A few noteworthy examples are: 1) Na8BaSn6 and Na8BaPb6 with aromatic pentagonal rings of Sn56- and Pb56-, respectively, that are isostructural and isoelectronic with the cyclpentadienyl anion, C5H5 -; 2) Li9-xEuSn6+x, Li5Ca7Sn11, L i6Eu5Sn9 with trimers, hexamers and infinite conjugated chains of Sn, in addition to aromatic pentagonal rings; 3) LiMgEu2Sn3 and LiMgSr2Sn3 with infinite conjugated chains of Sn and single atom anions; 4) Na4CaSn6 with channels built of cyclohexane-like units of Sn6 All of the above-mentioned compounds nicely illustrate the delicate balance between packing efficiency and electronic requirements, which explains the stabilization of these novel tetrel clusters, which are inaccessible in pure binary systems.	cache/vh53ws87t3d.txt	txt/vh53ws87t3d.txt