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Neutron Diffraction Studies Of Transition Metal Hydride Complexes Complexes With C5h6 Co No Poch33
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Book Synopsis Neutron Diffraction Studies of Transition Metal Hydride Complexes. [Complexes with C5H6, CO, NO, P(OCH3)3]. by :
Download or read book Neutron Diffraction Studies of Transition Metal Hydride Complexes. [Complexes with C5H6, CO, NO, P(OCH3)3]. written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigations of H3Ta(C5H5)2 (III), HW2(CO)9(NO) (IV), and HW2(CO)(NO) (P(OCH3)3) (V) have been completed. Preliminary results are available for HFeCo3(CO)9(P(OCH3)3)3 (VII). This work, together with studies of HMo2(C5H5)2(CO)4(P(CH3)2) (VI) and ((C2H5)4N) (HCr2(CO)10)− 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°), 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.
Book Synopsis Neutron Diffraction Studies on Transition Metal Hydride Complexes by :
Download or read book Neutron Diffraction Studies on Transition Metal Hydride Complexes written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent neutron diffraction investigations on terminal, bridging and triply-bridging metal-hydrogen bonds are reviewed.
Book Synopsis Neutron Diffraction Studies of Tetrahedral Cluster Transition Metal Hydride Complexes by :
Download or read book Neutron Diffraction Studies of Tetrahedral Cluster Transition Metal Hydride Complexes written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Structures of the tetrahedral cluster transition metal hydride complexes HFeCo/sub 3/(CO)/sub 9/(P(OCH/sub 3/)/sub 3/)/sub 3/ and H/sub 3/Ni/sub 4/(C/sub 5/H/sub 5/)/sub 4/ have been investigated by low-temperature neutron diffraction techniques. Both complexes have approximate C/sub 3//sub v/ symmetry. In HFeCo/sub 3/(CO)/sub 9/(P(OMe)/sub 3/)/sub 3/ the hydride ligand is found outside the FeCo/sub 3/ cluster, 0.978(3) A from the Co/sub 3/ face, and essentially on the molecular three-fold axis, triply bridging the cobalt atoms. Mean distances in the cluster are Co-Co 2.489(7), Co-Fe 2.559(2), Co-H 1.734(4) A. In H/sub 3/Ni/sub 4/(Cp)/sub 4/ the three hydride ligands are face-bridging, and their mean displacement from the faces of the cluster is 0.90(3) A. The H/sub 3/Ni/sub 4/ core may be envisaged as a distorted cube, with one vertex unoccupied. Mean distances are Ni-Ni 2.469(6), Ni-H 1.691(8), H ... H 2.316(6) A. The observed geometries of the two clusters considered here suggest a plausible model for chemisorption of hydrogen on (111) faces of cubic and (001) faces of hexagonal close-packed metals, in which hydrogen atoms are located approximately 1 A above the centers of triangles of metal atoms.
Book Synopsis Neutron Diffraction Studies of Transition Metal Hydrides and Chemistry of Metal Hydride Clusters by : Mary Helen Drabnis
Download or read book Neutron Diffraction Studies of Transition Metal Hydrides and Chemistry of Metal Hydride Clusters written by Mary Helen Drabnis and published by . This book was released on 1997 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutron Diffraction Studies of Metal Hydride Complexes by : Muhammed Faiz Yousufuddin
Download or read book Neutron Diffraction Studies of Metal Hydride Complexes written by Muhammed Faiz Yousufuddin and published by . This book was released on 2005 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutron Diffraction Studies of Transition Metal Hydrides by : Nam Nhat Ho
Download or read book Neutron Diffraction Studies of Transition Metal Hydrides written by Nam Nhat Ho and published by . This book was released on 2003 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: