The heat of formation and lattice energy of copper hydride |
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| Affiliation: | 1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;2. Beijing Aerospace Propulsion Institute, Beijing 100076, China;3. School of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China |
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| Abstract: | The heat of decomposition of copper hydride was measured, and this employed in a Born-Haber cycle to yield a lattice energy of 288·6 kcal/mole. Computation of the lattice energy of a hypothetical ionic Cu+H− by a Born-Landé equation resulted in 216 kcal/mole. These quantities were used to estimate the heat of transformation of hypothetical Cu+H− into real CuH; other thermochemical properties were calculated as well. These results, along with considerations of electronegativity, bond energy of CuH(g), and structure, all point to the covalent nature of copper hydride. |
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