Variable-temperature multinuclear n.m.r. studies (13C, 13C-{l03Rh}, 13C-{31P}, and 3lP) are reported for [Rh9E(C0)21]2-, [Rhl0E(C0)22]3- (E = P or As), and [Rh12Sb(C0)27]3-. In all cases, complete fluxionality of both the carbonyl and metal polyhedra are observed at high temperatures, and at low temperatures it has been possible to obtain spectra for the Rh9 and Rhl0 clusters, which are fully consistent with their solid-state structures, thus allowing a complete spectroscopic assignment ; the Rhl2 cluster is still fluxional in solution at -97 °C.
Heaton, B., Strona, L., DELLA PERGOLA, R., Vidal, J., Schoening, R. (1983). MULTINUCLEAR VARIABLE-TEMPERATURE NUCLEAR MAGNETIC-RESONANCE STUDY OF RHODIUM CARBONYL CLUSTERS CONTAINING ENCAPSULATED HETEROATOMS - LIGAND AND METAL POLYHEDRAL REARRANGEMENTS. JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS(9), 1941-1947 [10.1039/dt9830001941].
MULTINUCLEAR VARIABLE-TEMPERATURE NUCLEAR MAGNETIC-RESONANCE STUDY OF RHODIUM CARBONYL CLUSTERS CONTAINING ENCAPSULATED HETEROATOMS - LIGAND AND METAL POLYHEDRAL REARRANGEMENTS
DELLA PERGOLA, ROBERTO;
1983
Abstract
Variable-temperature multinuclear n.m.r. studies (13C, 13C-{l03Rh}, 13C-{31P}, and 3lP) are reported for [Rh9E(C0)21]2-, [Rhl0E(C0)22]3- (E = P or As), and [Rh12Sb(C0)27]3-. In all cases, complete fluxionality of both the carbonyl and metal polyhedra are observed at high temperatures, and at low temperatures it has been possible to obtain spectra for the Rh9 and Rhl0 clusters, which are fully consistent with their solid-state structures, thus allowing a complete spectroscopic assignment ; the Rhl2 cluster is still fluxional in solution at -97 °C.
| File | Dimensione | Formato | |
|---|---|---|---|
|
010_Rh9_10X.pdf
accesso aperto
Dimensione
637.17 kB
Formato
Adobe PDF
|
637.17 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
