The title compound appears to be present in solution as one major (98%) and two minor(ca, 1% each) isomers. All three isomers contain one bridging and one terminal hydride ligand. However, they differ in the location of the terminal hydride. Proton T-1 measurements at variable temperature have allowed the determination of H-T-H-B distances in each isomer. An estimation of the relative "hydridicity" of bridging and terminal hydrides has been gained by measuring the T-1 of H-2(mu-H-2)Os-3(CO)(11), while insights into the terminal/bridging hydride exchange have been gained from H-1 variable-temperature: NMR.

An NMR study of H(μ-H)Os3(CO)11

AIME, Silvio;DASTRU', Walter;GOBETTO, Roberto;VIALE, Alessandra
2000

Abstract

The title compound appears to be present in solution as one major (98%) and two minor(ca, 1% each) isomers. All three isomers contain one bridging and one terminal hydride ligand. However, they differ in the location of the terminal hydride. Proton T-1 measurements at variable temperature have allowed the determination of H-T-H-B distances in each isomer. An estimation of the relative "hydridicity" of bridging and terminal hydrides has been gained by measuring the T-1 of H-2(mu-H-2)Os-3(CO)(11), while insights into the terminal/bridging hydride exchange have been gained from H-1 variable-temperature: NMR.
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UNCONVENTIONAL HYDROGEN-BONDS; QUADRUPOLE COUPLING-CONSTANTS; METAL HYDRIDE COMPLEXES; H-N INTERACTIONS; CARBONYL SUBSTITUTION; RELAXATION; CLUSTERS; LIGANDS; CRYSTAL; OSMIUM
AIME S.; DASTRÙ W.; R. GOBETTO; VIALE A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/5810
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