We have successfully loaded H(2) into a diamond anvil cell at high pressure using the synchrotron x-ray induced decomposition of NH(3)BH(3). In a second set of studies, radiation-assisted release of O(2) from KCLO(3), H(2) release from NH(3)BH(3), and reaction of these gases in a mixture of the reactants to form liquid water using x-rays at ambient conditions was observed. Similar observations were made using a KCLO(3) and NaBH(4) mixture. Depending on reaction conditions, an explosive or far slower reaction producing water was observed.
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