title: Bis{2-[(3,5-diphenyl-1H-pyrrol-2-ylidene-κN)amino]-3,5-diphenylpyrrol-1-ido-κN}palladium(II): a homoleptic four-coordinate tetraphenylazadipyrromethene complex of palladium.
abstract: The structural chemistry of the title compound, [Pd(C32H22N3)2], at 173 K is described. The compound is comprised of two deprotonated (3,5-diphenyl-1H-pyrrol-2-yl)(3,5-diphenylpyrrol-2-ylidene)amine ligands coordinated to a central Pd(II) cation, which lies on an inversion centre and has distorted square-planar geometry. The Pd-N bond lengths range from 2.008 (4) to 2.014 (4) Å and the bite angle is 84.16 (14)°. The chelate plane makes a dihedral angle of 45.3 (2)° with respect to the central PdN4 plane, giving a stepped conformation to the molecule. The complex displays simple intramolecular C-H···N hydrogen bonds, while the unit cell consists of discrete monomeric Pd(C32H22N3)2 units which display intermolecular C-H···π interactions and limited intra- and intermolecular π-π stacking.
authors: Department of Pharmaceutical and Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
authors: Roderick C
authors: RC
authors: Jones
authors: School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland.
authors: Helge
authors: H
authors: Müller-Bunz
authors: School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland.
authors: Paul
authors: P
authors: Evans
authors: Department of Pharmaceutical and Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
authors: Donal F
authors: DF
authors: O'Shea
mesh_terms: D002412:Cations / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008024:Ligands; D015394:Molecular Structure; D009942:Organometallic Compounds; D009944:Organoplatinum Compounds / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*
chemical_list: D002412:Cations; D008024:Ligands; D009942:Organometallic Compounds; D009944:Organoplatinum Compounds; C000588591:bis(2-((3,5-diphenyl-1H-pyrrol-2-ylidene-kappaN)amino)-3,5-diphenylpyrrol-1-ido-kappaN)palladium(II); D010165:Palladium
keywords: azadipyrromethene ligand; crystal structure; homoleptic palladium complex; photophysical characteristics