H2 Activation, Reversibly Metal-free compound readily breaks and makes hydrogen Elizabeth Wilson Chemical & Engineering News November 20, 2006Link
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Reversible, Metal-Free Hydrogen Activation Gregory C. Welch, Ronan R. San Juan, Jason D. Masuda, Douglas W. Stephan Science (journal) 17 November 2006: Vol. 314. no. 5802, pp. 1124 - 1126 doi:10.1126/science.1134230