Metallcarbonyl-synthesen. V. Die reduktive hochdruckcarbonylierung von (η5-C5H5)NbCl4 als einfache und leistungsfähige synthesemethode...

Wolfgang A. Herrmann; Helmut Biersack

doi:10.1016/S0022-328X(00)81069-4

Metallcarbonyl-synthesen. V. Die reduktive hochdruckcarbonylierung von (η⁵-C₅H₅)NbCl₄ als einfache und leistungsfähige synthesemethode...

Wolfgang A. Herrmann
, Helmut Biersack

University of Regensburg

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The reductive high-pressure carbonylation of tetrachloro(η⁵-cyclopentadienyl)niobium using sodium as reduction agent and Cu/Al mixture as halogen acceptor system cleanly yields tetracarbonyl (η⁵-cyclopentadienyl)niobium which can be synthesized by means of this new procedure on a 35 g-scale, with yields ranging between 89 and 94%. Under photolysis conditions, (η⁵-C₅H₅) Nb(CO)₄ is converted into the solvent complex (η⁵-C₅H₅) Nb(CO)₃THF which, in turn, incorporates ¹³Co or ¹³C¹⁸O under mild conditions to give the labelled derivatives (η⁵-C₅H₅) Nb(CO)_{4 - n}(¹³CO)_n and (η⁵-C₅H₅) Nb(CO)_{4 - n}(¹³C¹⁸O)_n, respectively.

Original language	German
Pages (from-to)	397-407
Number of pages	11
Journal	Journal of Organometallic Chemistry
Volume	191
Issue number	2
DOIs	https://doi.org/10.1016/S0022-328X(00)81069-4
State	Published - 3 Jun 1980
Externally published	Yes

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title = "Metallcarbonyl-synthesen. V. Die reduktive hochdruckcarbonylierung von (η5-C5H5)NbCl4 als einfache und leistungsf{\"a}hige synthesemethode...",

abstract = "The reductive high-pressure carbonylation of tetrachloro(η5-cyclopentadienyl)niobium using sodium as reduction agent and Cu/Al mixture as halogen acceptor system cleanly yields tetracarbonyl (η5-cyclopentadienyl)niobium which can be synthesized by means of this new procedure on a 35 g-scale, with yields ranging between 89 and 94\%. Under photolysis conditions, (η5-C5H5) Nb(CO)4 is converted into the solvent complex (η5-C5H5) Nb(CO)3THF which, in turn, incorporates 13Co or 13C18O under mild conditions to give the labelled derivatives (η5-C5H5) Nb(CO)4 - n(13CO)n and (η5-C5H5) Nb(CO)4 - n(13C18O)n, respectively.",

author = "Herrmann, \{Wolfgang A.\} and Helmut Biersack",

year = "1980",

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doi = "10.1016/S0022-328X(00)81069-4",

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T1 - Metallcarbonyl-synthesen. V. Die reduktive hochdruckcarbonylierung von (η5-C5H5)NbCl4 als einfache und leistungsfähige synthesemethode...

AU - Herrmann, Wolfgang A.

AU - Biersack, Helmut

PY - 1980/6/3

Y1 - 1980/6/3

N2 - The reductive high-pressure carbonylation of tetrachloro(η5-cyclopentadienyl)niobium using sodium as reduction agent and Cu/Al mixture as halogen acceptor system cleanly yields tetracarbonyl (η5-cyclopentadienyl)niobium which can be synthesized by means of this new procedure on a 35 g-scale, with yields ranging between 89 and 94%. Under photolysis conditions, (η5-C5H5) Nb(CO)4 is converted into the solvent complex (η5-C5H5) Nb(CO)3THF which, in turn, incorporates 13Co or 13C18O under mild conditions to give the labelled derivatives (η5-C5H5) Nb(CO)4 - n(13CO)n and (η5-C5H5) Nb(CO)4 - n(13C18O)n, respectively.

AB - The reductive high-pressure carbonylation of tetrachloro(η5-cyclopentadienyl)niobium using sodium as reduction agent and Cu/Al mixture as halogen acceptor system cleanly yields tetracarbonyl (η5-cyclopentadienyl)niobium which can be synthesized by means of this new procedure on a 35 g-scale, with yields ranging between 89 and 94%. Under photolysis conditions, (η5-C5H5) Nb(CO)4 is converted into the solvent complex (η5-C5H5) Nb(CO)3THF which, in turn, incorporates 13Co or 13C18O under mild conditions to give the labelled derivatives (η5-C5H5) Nb(CO)4 - n(13CO)n and (η5-C5H5) Nb(CO)4 - n(13C18O)n, respectively.

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DO - 10.1016/S0022-328X(00)81069-4

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Metallcarbonyl-synthesen. V. Die reduktive hochdruckcarbonylierung von (η5-C5H5)NbCl4 als einfache und leistungsfähige synthesemethode...

Abstract

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Metallcarbonyl-synthesen. V. Die reduktive hochdruckcarbonylierung von (η⁵-C₅H₅)NbCl₄ als einfache und leistungsfähige synthesemethode...