Reorientation of the Alkyne Moiety in Fe3(CO)9(RC2R) Clusters Induced by a Two-Electron Electrochemical Reduction

Domenico Osella; Roberto Gobetto; Paolo Montangero; Piero Zanello; Arnaldo Cinquantini

doi:10.1021/om00137a033

Reorientation of the Alkyne Moiety in Fe₃(CO)₉(RC₂R) Clusters Induced by a Two-Electron Electrochemical Reduction

Domenico Osella
, Roberto Gobetto
, Paolo Montangero
, Piero Zanello
, Arnaldo Cinquantini

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

Abstract

The redox chemistry of alkyne-trimetal clusters has been investigated by electrochemical and spectroscopic techniques. The closo-Fe₃(CO)₉(RC₂R) series undergoes two near reversible one-electron reduction steps. The bulk of spectroscopic data of the electrolytically generated [Fe₃(CO)₉(EtC₂Et)]² dianion strongly suggests that the orientation of the alkyne moiety relative to the metallic triangle is changed from perpendicular to parallel. On the contrary the cathodic reduction of the nido series FeCo₂(CO)₉(EtC₂Et), Os₃(CO)₁₀(EtC₂Et), and H₂M₃(CO)₉(EtC₂Et) (M = Ru, Os) is totally irreversible and is associated to cluster breakdown.

Original language	English
Pages (from-to)	1247-1253
Number of pages	7
Journal	Organometallics
Volume	5
Issue number	6
DOIs	https://doi.org/10.1021/om00137a033
Publication status	Published - 1 Jun 1986
Externally published	Yes

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title = "Reorientation of the Alkyne Moiety in Fe3(CO)9(RC2R) Clusters Induced by a Two-Electron Electrochemical Reduction",

abstract = "The redox chemistry of alkyne-trimetal clusters has been investigated by electrochemical and spectroscopic techniques. The closo-Fe3(CO)9(RC2R) series undergoes two near reversible one-electron reduction steps. The bulk of spectroscopic data of the electrolytically generated [Fe3(CO)9(EtC2Et)]2 dianion strongly suggests that the orientation of the alkyne moiety relative to the metallic triangle is changed from perpendicular to parallel. On the contrary the cathodic reduction of the nido series FeCo2(CO)9(EtC2Et), Os3(CO)10(EtC2Et), and H2M3(CO)9(EtC2Et) (M = Ru, Os) is totally irreversible and is associated to cluster breakdown.",

author = "Domenico Osella and Roberto Gobetto and Paolo Montangero and Piero Zanello and Arnaldo Cinquantini",

year = "1986",

month = jun,

day = "1",

doi = "10.1021/om00137a033",

language = "English",

volume = "5",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Reorientation of the Alkyne Moiety in Fe3(CO)9(RC2R) Clusters Induced by a Two-Electron Electrochemical Reduction

AU - Osella, Domenico

AU - Gobetto, Roberto

AU - Montangero, Paolo

AU - Zanello, Piero

AU - Cinquantini, Arnaldo

PY - 1986/6/1

Y1 - 1986/6/1

N2 - The redox chemistry of alkyne-trimetal clusters has been investigated by electrochemical and spectroscopic techniques. The closo-Fe3(CO)9(RC2R) series undergoes two near reversible one-electron reduction steps. The bulk of spectroscopic data of the electrolytically generated [Fe3(CO)9(EtC2Et)]2 dianion strongly suggests that the orientation of the alkyne moiety relative to the metallic triangle is changed from perpendicular to parallel. On the contrary the cathodic reduction of the nido series FeCo2(CO)9(EtC2Et), Os3(CO)10(EtC2Et), and H2M3(CO)9(EtC2Et) (M = Ru, Os) is totally irreversible and is associated to cluster breakdown.

AB - The redox chemistry of alkyne-trimetal clusters has been investigated by electrochemical and spectroscopic techniques. The closo-Fe3(CO)9(RC2R) series undergoes two near reversible one-electron reduction steps. The bulk of spectroscopic data of the electrolytically generated [Fe3(CO)9(EtC2Et)]2 dianion strongly suggests that the orientation of the alkyne moiety relative to the metallic triangle is changed from perpendicular to parallel. On the contrary the cathodic reduction of the nido series FeCo2(CO)9(EtC2Et), Os3(CO)10(EtC2Et), and H2M3(CO)9(EtC2Et) (M = Ru, Os) is totally irreversible and is associated to cluster breakdown.

UR - https://www.scopus.com/pages/publications/0000631512

U2 - 10.1021/om00137a033

DO - 10.1021/om00137a033

M3 - Article

SN - 0276-7333

VL - 5

SP - 1247

EP - 1253

JO - Organometallics

JF - Organometallics

IS - 6

ER -

Reorientation of the Alkyne Moiety in Fe₃(CO)₉(RC₂R) Clusters Induced by a Two-Electron Electrochemical Reduction

Abstract

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