Actions for Neutron diffraction studies of transition metal hydride complexes. [Complexes with C

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Neutron diffraction studies of transition metal hydride complexes. [Complexes with C/sub 5/H/sub 6/, CO, NO, P(OCH/sub 3/)/sub 3/] [electronic resource].

Published
Washington, D.C : United States. Energy Research and Development Administration, 1976.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 10 : digital, PDF file
Additional Creators
University of Southern California, United States. Energy Research and Development Administration, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Investigations of H/sub 3/Ta(C/sub 5/H/sub 5/)/sub 2/ (III), HW/sub 2/(CO)/sub 9/(NO) (IV), and HW/sub 2/(CO)/sub 8/(NO) (P(OCH/sub 3/)/sub 3/) (V) have been completed. Preliminary results are available for HFeCo/sub 3/(CO)/sub 9/(P(OCH/sub 3/)/sub 3/)/sub 3/ (VII). This work, together with studies of HMo/sub 2/(C/sub 5/H/sub 5/)/sub 2/(CO)/sub 4/(P(CH/sub 3/)/sub 2/) (VI) and ((C/sub 2/H/sub 5/)/sub 4/N)/sup +/ (HCr/sub 2/(CO)/sub 10/)/sup -/ carried out at Argonne has led to some general observations on the geometry and the nature of bonding in these compounds. For example, in the structures of IV and V, both of which have bent W--H--W linkages (less than W--H--W in the range 125-130/sup 0/), there is conclusive evidence for the existence of a closed three-center W--H--W bond with significant metal-metal interaction. Such is the case, because extensions of the axial W--C and W--N bonds trans to the hydride intersect at a point near the center of the W--H--W triangle. The geometry of VI, which also contains a bent M--H--M bond, is consistent with that of IV and V. Bridging M--H bonds in these second- and third-row hydrides range in length from 1.85 to 1.89 A, compared to 1.75 A in the first-row polynuclear complex VII. For metals of corresponding rows, bridging M--H bonds are about 0.1 A longer than terminal bonds, which are classified as single covalent bonds.
Report Numbers
E 1.99:bnl-21470
E 1.99: conf-760601-6
conf-760601-6
bnl-21470
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1976.
"bnl-21470"
" conf-760601-6"
Conference on neutron scattering, Gatlinburg, TN, USA, 6 Jun 1976.
Bau, R; Koetzle, T F.
Brookhaven National Lab., Upton, N.Y. (USA)
Funding Information
E(30-1)-16
View MARC record | catkey: 14398255