No abstract

The basic concepts for direct and catalyzed photodissociation of water have been summarized. Water dissociation in closed-cycle processes based on endothermic photochemical reactions offers a potential solution to the solar energy conversion problem. Transition metal complexes, whose excited state chemistry is extremely rich (23, 24) although mostly unexplored, are, in principle, suitable "catalysts" for cycles of this type. The most interesting cycles are those involving metal hydrido complexes or binuclear complexes in which the two metal atoms are bound into a macrocyclic ligand. Systematic investigations of the photochemistry of transition metal complexes with the aim of designing suitable systems for solar energy conversion have long-range promise and merit further consideration.

studies have been reported on the photoexchange PtXe2"-X" reactions7"15 and on the behavior of flashed solutions of PtBre2" and PtL2",16 but no systematic investigations about the photochemical reactions of these complexes have been done. We wish to report the results obtained by irradiating Pt-

No abstract

No abstract