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Interaction of (. mu. -H)/sub 2/Ru/sub 4/(CO)/sub 12/ with diphosphines in the presence of trimethylamine n-oxide. X-ray crystal structure analyses of (. mu. -H)/sub 4/Ru/sub 4/(CO)/sub 10/(. mu. -)Ph/sub 2/P(CH/sub 2/)/sub n/PPh/sub 2/)) (n = 1, 3, 4), (. mu. -H/sub 4/Ru/sub 4/(CO)/sub 10/(. mu. -)Ph/sub 2/PCH/sub 2/CH(CH/sub 3/)PPh/sub 2/)), and (. mu. -H)/sub 2/Ru/sub 4/(CO)/sub 10/()Ph/sub 2/PCH/sub 2/CH(CH/sub 3/PPh/sub 2/))

Journal Article · · Inorg. Chem.; (United States)
DOI:https://doi.org/10.1021/ic00253a019· OSTI ID:6674068
; ; ; ; ; ;

The complexes (/sup +/-H)/sub 4/Ru/sub 4/(CO)/sub 10/(..mu..-)Ph/sub 2/P(CH/sub 2/)/sub n/PPh/sub 2/)) (n=1(1), 3 (3), 4 (4)), (..mu..-H)/sub 4/Ru/sub 4/(CO)/sub 10/(..mu..-)Ph/sub 2/PCH/sub 2/CH(CH/sub 3/)PPh/sub 2/)) (2a), (/sup +/-H)/sub 4/Ru/sub 4/(CO)/sub 10/)Ph/sub 2/PCH/sub 2/CH(CH/sub 3/)PPh/sub 2/) (2b), and ((..mu..-H)/sub 4/Ru/sub 4/(CO)/sub 11/)/sub 2/)Ph/sub 2/P(CH/sub 7/)/sub 5/PPh/sub 2/) (5a) have been characterized by IR, /sup 1/H NMR, and /sup 31/P NMR spectroscopy. The structures of compounds 1, 2a, 2b, 3, and 4 have been determined by single-crystal X-ray diffractometry. The diphosphine ligands are seen to bridge a Ru-Ru bond of the tetrahedral Ru/sub 4/ cluster in 1, 2a, 3, and 4, while the diphosphine ligand adopts a chelating mode of bonding in 2b. The hydride atoms in each of the structures were not located but were inferred from Ru-Ru bond lengths. They take up the same distribution of idealized C/sub s/ symmetry in all four structures. Where an asymmetric carbon atom is present (2a and 2b) only one of the two possible diastereoisomeric forms is found in the solid. Crystal data for the complexes are presented. 15 references, 4 figures, 8 tables.

Research Organization:
IVIC, Caracas, Venezuela
OSTI ID:
6674068
Journal Information:
Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 26:6; ISSN INOCA
Country of Publication:
United States
Language:
English

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