Remarkable stability of (η5-C5H5)Re(CO)2L (L = n-heptane, xe, and kr)

A time-resolved infrared spectroscopic study of (η5-C5H5)Re(CO)3 in conventional and supercritical fluid solution

Xue Zhong Sun, David C. Grills, Sergei M. Nikiforov, Martyn Poliakoff, Michael W. George

Research output: Contribution to journalArticle

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Abstract

Employing fast time-resolved infrared (TRIR) spectroscopy we have characterized CpRe(CO)2(n-heptane), CpRe(CO)2(Xe), and CpRe(CO)2(Kr) (Cp = η5-C5H5) at or above room temperature in n-heptane, supercritical Xe, and Kr solution. The reactivity of CpRe(CO)2(n-heptane) with CO (k2 = 2.1 (±0.5) x 103 mol-1 dm3 s-1) shows this complex to be the least reactive of the reported organometallic alkane complexes. We report a trend in reactivity of the early transition metal alkane complexes. CpRe(CO)2(Xe) and CpRe(CO)2(Kr) are also shown to have significant stability. CpRe(CO)2(Xe) is less reactive toward CO than all of the reported alkane complexes except CpRe(CO)2(n-heptane).

Original languageEnglish
Pages (from-to)7521-7525
Number of pages5
JournalJournal of the American Chemical Society
Volume119
Issue number32
DOIs
Publication statusPublished - Aug 13 1997

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Supercritical fluids
Heptane
Carbon Monoxide
Paraffins
Infrared radiation
Alkanes
Organometallics
Transition metals
Infrared spectroscopy
n-heptane
Coordination Complexes
Spectrum Analysis
Temperature

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Remarkable stability of (η5-C5H5)Re(CO)2L (L = n-heptane, xe, and kr) : A time-resolved infrared spectroscopic study of (η5-C5H5)Re(CO)3 in conventional and supercritical fluid solution. / Sun, Xue Zhong; Grills, David C.; Nikiforov, Sergei M.; Poliakoff, Martyn; George, Michael W.

In: Journal of the American Chemical Society, Vol. 119, No. 32, 13.08.1997, p. 7521-7525.

Research output: Contribution to journalArticle

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title = "Remarkable stability of (η5-C5H5)Re(CO)2L (L = n-heptane, xe, and kr): A time-resolved infrared spectroscopic study of (η5-C5H5)Re(CO)3 in conventional and supercritical fluid solution",
abstract = "Employing fast time-resolved infrared (TRIR) spectroscopy we have characterized CpRe(CO)2(n-heptane), CpRe(CO)2(Xe), and CpRe(CO)2(Kr) (Cp = η5-C5H5) at or above room temperature in n-heptane, supercritical Xe, and Kr solution. The reactivity of CpRe(CO)2(n-heptane) with CO (k2 = 2.1 (±0.5) x 103 mol-1 dm3 s-1) shows this complex to be the least reactive of the reported organometallic alkane complexes. We report a trend in reactivity of the early transition metal alkane complexes. CpRe(CO)2(Xe) and CpRe(CO)2(Kr) are also shown to have significant stability. CpRe(CO)2(Xe) is less reactive toward CO than all of the reported alkane complexes except CpRe(CO)2(n-heptane).",
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T1 - Remarkable stability of (η5-C5H5)Re(CO)2L (L = n-heptane, xe, and kr)

T2 - A time-resolved infrared spectroscopic study of (η5-C5H5)Re(CO)3 in conventional and supercritical fluid solution

AU - Sun, Xue Zhong

AU - Grills, David C.

AU - Nikiforov, Sergei M.

AU - Poliakoff, Martyn

AU - George, Michael W.

PY - 1997/8/13

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N2 - Employing fast time-resolved infrared (TRIR) spectroscopy we have characterized CpRe(CO)2(n-heptane), CpRe(CO)2(Xe), and CpRe(CO)2(Kr) (Cp = η5-C5H5) at or above room temperature in n-heptane, supercritical Xe, and Kr solution. The reactivity of CpRe(CO)2(n-heptane) with CO (k2 = 2.1 (±0.5) x 103 mol-1 dm3 s-1) shows this complex to be the least reactive of the reported organometallic alkane complexes. We report a trend in reactivity of the early transition metal alkane complexes. CpRe(CO)2(Xe) and CpRe(CO)2(Kr) are also shown to have significant stability. CpRe(CO)2(Xe) is less reactive toward CO than all of the reported alkane complexes except CpRe(CO)2(n-heptane).

AB - Employing fast time-resolved infrared (TRIR) spectroscopy we have characterized CpRe(CO)2(n-heptane), CpRe(CO)2(Xe), and CpRe(CO)2(Kr) (Cp = η5-C5H5) at or above room temperature in n-heptane, supercritical Xe, and Kr solution. The reactivity of CpRe(CO)2(n-heptane) with CO (k2 = 2.1 (±0.5) x 103 mol-1 dm3 s-1) shows this complex to be the least reactive of the reported organometallic alkane complexes. We report a trend in reactivity of the early transition metal alkane complexes. CpRe(CO)2(Xe) and CpRe(CO)2(Kr) are also shown to have significant stability. CpRe(CO)2(Xe) is less reactive toward CO than all of the reported alkane complexes except CpRe(CO)2(n-heptane).

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