6  Carbon, silicon, germanium, tin and lead

Abstract

The chemistry of Group 14 elements is possibly the most diverse area of chemistry that can be found within a single periodic group. This year, there are reports covering the activation of diamond surfaces by perfluoro organic radicals, the synthesis of new Zintl ions and complexes of tin with biological ligands that can lower blood pressure in mammals. The growth in the number of reports covering research in M( 14)-M( 14) multiply bonded species and M(II) species of low coordination number is impressive, and shows clearly that there is still scope and opportunity for exciting discovery in these areas. Group 14 chemistry remains strong and innovative and is a constant source of inspiration and surprise to any and all who study it.

pH-Specific Crystalline Binary and Ternary Metal–Organic Framework Materials of Pb(II) with (Di)Tricarboxylate Ligands and N,N′-Aromatic Chelators. Structure, Architecture-Lattice Dimensionality, and Electronic Spectroscopic Property Correlations

“…18 Divalent lead compounds sometimes exhibit an ''inert-pair effect" with low as well as high coordination numbers. 19 Concurrently, stereochemically active lone-pair Pb(II) compounds are of great interest owing to the manifestation of luminescence; 20−22 it is known that this property is also influenced by the nature of the organic anion bound to Pb(II). 23,24 However, luminescence in Pb(II) coordination compounds is rarely reported.…”