Synthesis, characterization and electrochemical studies of the heterometallic diclusters [{Fe 2( μ-CO)(CO) 6( μ-PPh 2)Au} 2(diphosphine)] (diphosphine=dppm, dppip, dppe, dppp)

• Published in: Journal of organometallic chemistry Vol. 560; no. 1; pp. 147 - 153
• Main Authors: Ferrer, Montserrat, Julià, Anna, Reina, Roser, Rossell, Oriol, Seco, Miquel, de Montauzon, Dominique
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-06-1998
• Subjects: Clusters; Diphosphine; Heterometallic; Clusters; Diphosphine; Heterometallic
• ISSN: 0022-328X; 1872-8561
• DOI: 10.1016/S0022-328X(98)00490-2

Treatment of [(ClAu)
2(diphosphine)] {diphosphine=bis(diphenylphosphino)methane (dppm), bis(diphenylphosphino)isopropane (dppip), 1,2-bis(diphenylphosphino)ethane (dppe), 1,3-bis(diphenylphosphino)propane (dppp)} with two equivalents of the anion [Fe
2(
μ-CO)(CO)
6(
μ-PPh
2)]
− in the presence of TlBF
4 gives the new heterometallic diclusters [{Fe
2(
μ-CO)(CO)
6(
μ-PPh
2)Au}
2(diphosphine)] that have been isolated and characterized. Their
31P-NMR spectra show different patterns as a function of the diphosphine ligand. The electrochemical behavior of these compounds has been investigated and compared with that of the mono- [Fe
2(
μ-CO)(CO)
6(
μ-PPh
2)(
μ-AuPPh
3)] and tricluster [{Fe
2(
μ-CO)(CO)
6(
μ-PPh
2)Au}
3(triphos)] derivatives.