Fluxionality of (.eta.2-naphthalene)(iso-Pr2P(CH2)n-iso-Pr2P)Ni0 (n = 2,3) in the solid state and solution as studied by CP/MAS and 2D carbon-13 NMR spectroscopy

Two-dimensional magnetization transfer experiments on the dissolved molecules confirm that there are two further fluxional processes involving rotation and migration of the P 2 Ni moiety around the 1,2-, 3,4-, 5,6-, and 7,8-positions of both six-membered rings. The activation barrier for the migration of the η 2 -bonded P 2 Ni moiety in the bicyclic compound is approximately 15 kcal/mol