Five-Coordinate Hydrogen: Neutron Diffraction Analysis of the Hydrido Cluster Complex [H 2 Rh 13 (CO) 24 ] 3−
- 21 February 1997
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 275 (5303), 1099-1102
- https://doi.org/10.1126/science.275.5303.1099
Abstract
Pentacoordinate hydrogen atoms were identified by single-crystal neutron diffraction analysis of [N(CH 3 ) 4 ] 3 [H 2 Rh 13 (CO) 24 ]. The hydrogen atoms are located in square pyramidal cavities of the Rh 13 cluster, in positions almost coplanar with the Rh 4 faces on the surface of the cluster. They are slightly displaced inward, toward the central rhodium atom of the cluster, with average H-Rh(central) and H-Rh(surface) distances of 1.84(2) and 1.97(2) angstroms, respectively. This result shows that hydrogen, which normally forms only one bond, can be attached to five other atoms simultaneously in a large metal cluster.Keywords
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