The CNDO, EHT, arid SW-Xu methods are used to investigate tetrahedral and octahedral Ni clusters with and without the interstitial hydrogen in the center. Optimized distances between atoms, one-electron energy levels, and the bonding mechanism of hydrogen in the nickel clusters are given and discussed in detail.Unter Benutzung der CNDO-, EHT-und SW-Xu-Methode wird der Einbnu eines Wawerstoffatoms in das Zentrum eines tet,raedrischen bzw. oktaedrischen Nickelclusters untersucht. Dabei wird der Abstand der Atome der Cluster mit und ohne H jeweils optimiert. Die berechneteii MO-Niveaus und der Bindungsmechanismus des Wasserstoffs im Nickelclust,er werden ausfuhrlich diskutiert.
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