NOVELTY - An organo metal persulfide complex (I), is new.    USE - For deriving hydrogen from water (claimed) which is used as a clean replacement for fossil fuels in many applications, including transportation in cars, buses, trucks, trains, and airplanes; used in fuel cells for powering mobile devices such as lap-top computers and cell phones, and for meeting power requirements in buildings and industry; and used as a reactant.    ADVANTAGE - The organo metal persulfide complex exhibits highest rate and lifetime, and low cost for hydrogen production; shows much greater stability under ambient conditions and is robust to impurities in water; has the feasibility of adjusting the electronic structure at the metal center, and thereby perhaps the required over potential, through ligand modifications accessible through synthetic chemistry; and is capable of generating hydrogen from acidic-buffered water or even seawater at very low over potentials at a turnover frequency rate in excess of 500 moles H2 per mole complex per second, with a turnover number (over 20 hour period) of at least 19000000 moles H2 per mole of complex.    DETAILED DESCRIPTION - An organo metal persulfide complex (Q1) of formula (I), is new.    M'=high oxidation state metal selected from Mo, Ti, V, Cr, Mn, Fe, Co, Ni, Cu or W;    W', X', Y' and Z'=H, methyl, higher alkyl or aryl, F, Cl, Br, I, CF3 or Si(R)3;    ANION=CF3SO3;    x+ and x-=integers.    INDEPENDENT CLAIMS are included for the following:    (1) new organo metal-persulfide complex (Q2) containing composition of matter comprising compound of formula ((PY'5(W')2)MoS2)2+; and    (2) deriving hydrogen from water, involving dissolving the organo metal complex (I) in a water bath, where the water bath contains both an anode and a cathode, and an electrolyte, then maintaining the water bath at a low pH, and applying a negative potential to the cathode, where the organo metal persulfide complex picks up electrons at the negative electrode, and then reacts with water to release hydrogen.    PY'5(W')2=(NC5X'Y'Z')(NC5H4)4C2(W')2.