DEFECTIVE OCTANUCLEAR NICKEL COMPLEX WITH PYRAZINE AND NAPHTHYRIDINE MODULATED N 2 (PYRAZIN-2-YL)-N 7 -(2-(PYRAZIN-2- YLAMINO)-1,8-NAPHTHYRIDIN-7-YL)-1,8-NAPHTHYRIDINE-2,7-DIAMINE LIGAND