Bis(μ-azido-κ2N1:N1)bis{(acetato-κ2O,O′)[2,4,6-tris(2-pyridyl)-1,3,5-triazine-κ3N2,N1,N6]lead(II)}

Milad Dayani,Edward R T Tiekink,Akbar Ghaemi,Seik Weng Ng

doi:10.1107/s1600536811038116

Abstract

The complete dinuclear title complex, [Pb2(C2H3O2)2(N3)2(C18H12N6)2], is generated by the application of a crystallographic centre of inversion. The PbII atom is coordinated by three N atoms of the tridentate ligand, two O atoms derived from an asymmetrically coordinating acetate ligand, and two azido-N atoms derived from two asymmetrically bridging azido ligands. The metal coordination geometry can be described as a square anti-prism with one position occupied by an unseen lone pair of electrons. In the ligand, the two coordinating pyridine rings are almost co-planar with the central pyrazine ring [dihedral angles = 0.47 (17) and 0.83 (18)°], but the terminal ring is twisted [dihedral angle = 19.76 (18)°]. In the crystal, the presence of π–π interactions [ring centroid distance between pyridyl rings = 3.581 (2) Å] leads to supramolecular chains along the a-axis direction.

Highlights

Young Researchers Club, Saveh Branch, Islamic Azad University, Saveh, Iran, Department of Chemistry, Saveh Branch, Islamic Azad University, Saveh, Iran, c
The PbII atom is coordinated by three N atoms of the tridentate ligand, two O atoms derived from an asymmetrically coordinating acetate ligand, and two azido-N atoms derived from two asymmetrically bridging azido ligands
The metal coordination geometry can be described as a square anti-prism with one position occupied by an unseen lone pair of electrons

Summary

Data collection

Young Researchers Club, Saveh Branch, Islamic Azad University, Saveh, Iran, Department of Chemistry, Saveh Branch, Islamic Azad University, Saveh, Iran, c

Agilent SuperNova Dual diffractometer with Atlas detector

Special details