New lead(II) coordination polymer derived from second generation O-methylpyridylxanthate: Crystallographic and computational studies

Role of tetrel bonds in the supramolecular architecture of tetranuclear Pb(ii)[LL′thiophene carboxylate] complexes – an experimental and computational study

“…Generally, lead(II) complexes with N/O/S/ X-donor ligands (X = halide or pseudohalide) are hemidirected for coordination number up to five (n = 5), and holodirected for coordination number six and higher (n > 6). 10,11 Hemidirectional complexes are unique to lead among d and p block hypervalent metals. They feature a void space that accommodates electronegative atoms or ions, thereby facilitating the formation of tetrel bonds.…”