Intrazeolite topotaxy: sodium-23 double-rotation NMR study of transition-metal hexacarbonyls and oxides encapsulated in sodium zeolite Y Academic Article uri icon

abstract

  • Na-23 double-rotation NMR (DOR) provides details on site specific adsorption and anchoring interactions in intrazeolite hexacarbonylmetal(0) complexes, M{M(CO)6}-Na56Y, where M = Mo and W, and their molecular photooxidation products, n{MO3-x}-Na56Y, over the full composition range 0 < m less-than-or-equal-to 16, 0 < n less-than-or-equal-to 32 and 0 less-than-or-equal-to x less-than-or-equal-to 1. The shifts, intensities, and line shapes of the Na-23 DOR resonances carry information on the environments of the extraframework Na+ binding sites within the zeolite lattice, as well as structural aspects of the guest species.

publication date

  • May 1, 2002