Synthesis and Crystal Structure of cis-Dichloro{bis-(N,N-dimethylaminoethyl)tellurium-.KAPPA.2N,Te}palladium(II)

Abstract

The coordination chemistry of bi-and polydentate hybrid tellurium ligands has attracted considerable attention in recent years.1 Besides possibilities of isolating complexes with various structural motifs, higher inversion energy of tellurium in organotellurium compounds than those of the corresponding S or Se derivatives (order of inversion barriers, Te>Se>S) provide a unique opportunity to study a rather little-explored dynamic stereochemistry of organotellurium complexes.

Pd-Mediated Activation of Molecular Oxygen in a Nonpolar Medium

“…The O−H bond distance of 1.02 Å is similar to that of free HO 2 • (1.00 Å). Finally, the Pd−Cl bond distance of 2.54 Å and the Pd−N distances of 2.30 (trans to Cl) and 2.35 Å (cis to Cl) are elongated by 0.25, 0.19, and 0.24 Å compared to the bond lengths in other Pd II complexes, as expected for a Pd I center. An interesting feature of 3A is the H−Cl distance of 2.00 Å between the Cl and the H of the peroxyl radical, which indicates some internal hydrogen bonding.…”