Synthesis, Structure and Norbornene Polymerization Activity of a Novel Palladium(II) Complex with N,O-Bis{1-[[(3-methyl-pyridin-2-yl)amino]methyl-phenyl]-2-hydroxy-3,5-di-tert-butylphenol} Ligand

The title complex bis{1-[[(3-methyl-pyridin-2-yl)amino]methyl-phenyl]-2-hydroxy3,5-di-tert-butylphenol} palladium (C42H56O2N4Pd) has been synthesized by the reaction of 1-[[(3-methyl-pyridin-2-yl)amino]methyl-phenyl]-2-hydroxy-3,5-di-tert-butylphenol with Pd(OAc)(2), and was characterized by IR and elemental analyses (C, H, N). Single-crystal X-ray diffraction analysis of the complex revealed an almost parallelogram geometry of the metal center, space group P-(1) over bar with a = 12.3870(13), b = 12.9673(12), c = 14.3998(4)angstrom, alpha = 67.53(2), beta = 75.34(2),gamma = 86.89(3)degrees, V = 2065.5(3)angstrom(3), M-r = 773.32, Z = 2, D-c = 1.243 g/cm(3), mu = 0.489 mm(-1), F(000) = 816, the final R = 0.0649 and wR = 0.1567. The compound was investigated for the catalytic behavior towards norbornene (NB) vinyl addition polymerization. And the complex exhibits high catalytic activities up to 1.668 x 10(7) g of PNB (mol of Pd)(-1) h(-1) with high monomer conversion using methylaluminoxane (MAO) as the cocatalyst.