Abstract
The reaction of Ru5(CO)12(η6-C 6H6)(μ5-C), 7, with Pt(PBut 3)2 yielded two products Ru5(CO) 12(η6-C6H6)(μ6-C) [Pt(PBut3)], 8, and Ru5(CO)12(η 6-C6H6)(μ6-C)[Pt(PBu t3)]2, 9. Compound 8 contains a Ru 5Pt metal core in an open octahedral structure. In solution, 8 exists as a mixture of two isomers that interconvert rapidly on the NMR time scale at 20 °C, ΔH‡ = 7.1(1) kcal mol-1, ΔS‡ = -5.1(6) cal mol-1 K-1, and ΔG298‡ = 8.6(3) kcal mol-1. Compound 9 is structurally similar to 8, but has an additional Pt(PBut3) group bridging an Ru-Ru edge of the cluster. The two Pt(PBut3) groups in 9 rapidly exchange on the NMR time scale at 70 °C, ΔH‡ = 9.2(3) kcal mol-1, ΔS‡ = -5(1) cal mol-1 K-1, and ΔG298‡ = 10.7(7) kcal mol-1. Compound 8 reacts with hydrogen to give the dihydrido complex Ru5(CO) 11(η6-C6H6)(μ6-C) [Pt(PBut3)](μ-H)2, 10, in 59% yield. This compound consists of a closed Ru5Pt octahedron with two hydride ligands bridging two of the four Pt-Ru bonds.
| Original language | English |
|---|---|
| Pages (from-to) | 7243-7249 |
| Number of pages | 7 |
| Journal | Inorganic Chemistry |
| Volume | 43 |
| Issue number | 22 |
| DOIs | |
| State | Published - Nov 1 2004 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Inorganic Chemistry
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Addition of Pt(PBut3) groups to Ru 5(CO)12(η6-C6H 6)(μ5-C). Synthesis, structures, and dynamical activity. / Adams, Richard D.; Captain, Burjor; Pellechia, Perry J.; Zhu, Lei.
In: Inorganic Chemistry, Vol. 43, No. 22, 01.11.2004, p. 7243-7249.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Addition of Pt(PBut3) groups to Ru 5(CO)12(η6-C6H 6)(μ5-C). Synthesis, structures, and dynamical activity
AU - Adams, Richard D.
AU - Captain, Burjor
AU - Pellechia, Perry J.
AU - Zhu, Lei
PY - 2004/11/1
Y1 - 2004/11/1
N2 - The reaction of Ru5(CO)12(η6-C 6H6)(μ5-C), 7, with Pt(PBut 3)2 yielded two products Ru5(CO) 12(η6-C6H6)(μ6-C) [Pt(PBut3)], 8, and Ru5(CO)12(η 6-C6H6)(μ6-C)[Pt(PBu t3)]2, 9. Compound 8 contains a Ru 5Pt metal core in an open octahedral structure. In solution, 8 exists as a mixture of two isomers that interconvert rapidly on the NMR time scale at 20 °C, ΔH‡ = 7.1(1) kcal mol-1, ΔS‡ = -5.1(6) cal mol-1 K-1, and ΔG298‡ = 8.6(3) kcal mol-1. Compound 9 is structurally similar to 8, but has an additional Pt(PBut3) group bridging an Ru-Ru edge of the cluster. The two Pt(PBut3) groups in 9 rapidly exchange on the NMR time scale at 70 °C, ΔH‡ = 9.2(3) kcal mol-1, ΔS‡ = -5(1) cal mol-1 K-1, and ΔG298‡ = 10.7(7) kcal mol-1. Compound 8 reacts with hydrogen to give the dihydrido complex Ru5(CO) 11(η6-C6H6)(μ6-C) [Pt(PBut3)](μ-H)2, 10, in 59% yield. This compound consists of a closed Ru5Pt octahedron with two hydride ligands bridging two of the four Pt-Ru bonds.
AB - The reaction of Ru5(CO)12(η6-C 6H6)(μ5-C), 7, with Pt(PBut 3)2 yielded two products Ru5(CO) 12(η6-C6H6)(μ6-C) [Pt(PBut3)], 8, and Ru5(CO)12(η 6-C6H6)(μ6-C)[Pt(PBu t3)]2, 9. Compound 8 contains a Ru 5Pt metal core in an open octahedral structure. In solution, 8 exists as a mixture of two isomers that interconvert rapidly on the NMR time scale at 20 °C, ΔH‡ = 7.1(1) kcal mol-1, ΔS‡ = -5.1(6) cal mol-1 K-1, and ΔG298‡ = 8.6(3) kcal mol-1. Compound 9 is structurally similar to 8, but has an additional Pt(PBut3) group bridging an Ru-Ru edge of the cluster. The two Pt(PBut3) groups in 9 rapidly exchange on the NMR time scale at 70 °C, ΔH‡ = 9.2(3) kcal mol-1, ΔS‡ = -5(1) cal mol-1 K-1, and ΔG298‡ = 10.7(7) kcal mol-1. Compound 8 reacts with hydrogen to give the dihydrido complex Ru5(CO) 11(η6-C6H6)(μ6-C) [Pt(PBut3)](μ-H)2, 10, in 59% yield. This compound consists of a closed Ru5Pt octahedron with two hydride ligands bridging two of the four Pt-Ru bonds.
UR - http://www.scopus.com/inward/record.url?scp=7244240835&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=7244240835&partnerID=8YFLogxK
U2 - 10.1021/ic049004l
DO - 10.1021/ic049004l
M3 - Article
C2 - 15500365
AN - SCOPUS:7244240835
VL - 43
SP - 7243
EP - 7249
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 22
ER -