Abstract [Ni (Ph)(PPh 3)(N, O)] complexes containing phenylimino-phenolato ligands (N, O)(1: N, O= A; 2: N, O= B; 3: N, O= C; 4: N, O= D; 5: N, O= E) have been synthesized and characterized. The molecular structure of 4 was determined by single-crystal X-ray analysis. Complexes 2− 5 bearing allyl groups have been investigated as self-immobilized catalysts for ethylene polymerization without the use of co-catalysts. The high ethylene ...