Syntheses and Characterization of Mixed‐Anions Lead(II) Complexes, [Pb(phen)₂(CH₃COO)]X (X=NCS^—, NO₃^— and ClO₄^—), Crystal Structure of [Pb(phen)₂(CH₃COO)](ClO₄)

Abstract

Abstract The 1:2 adduct lead(II) complexes with 1, 10‐phenanthroline (phen) containing three different anions, [Pb(phen) 2 (CH 3 COO)X] (X=NCS — , NO 3 — and ClO 4 — ), have been synthesized and characterized by CHN elemental analysis, IR‐, 1 H‐ and 13 C NMR spectroscopy. The structure of [Pb(phen) 2 (CH 3 COO)(ClO 4 )] was determined by single crystal X‐ray analysis. The Pb atom of the monomeric complex is coordinated by four nitrogen atoms of two 1, 10‐phenanthroline ligands and two oxygen atoms of the acetate ligand to form an irregular octahedron. The arrangement of the 1, 10‐phenanthroline and acetate ligands, exhibits a coordination gap around the Pb II ion, possibly occupied by a stereochemical electron active lone pair on lead(II), which results in a hemidirected lead compound. The π‐π stacking interaction between the parallel aromatic rings may help to increase the coordination ‘gap’ around the Pb II ion.