Synthesis and molecular structure of the borido cluster Fe4(CO)12BHAu2{AsPh3}2 and an investigation of the electrochemistry of Fe4(CO)12BHAu2L2, L AsPh3 or PPh3

Catherine E. Housecroft, Musa S. Shongwe, Arnold L. Rheingold, Piero Zanello

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The synthesis and characterisation by X-ray crystallography of Fe4(CO)12BHAu2{AsPh3}2 are reported. Fe4(CO)12BHAu2{AsPh3}2 is isostructural with its phosphine analogue Fe4(CO)12-BHAu2{PPh3}2 and possesses a central Fe4-butterfly framework with a semi-interstitial boron atom and two asymmetrically positioned AuAsPh3 groups, one bridging and FewingB edge and one interacting with an FehingeB edge. Changing the gold(I) substituent from PPh3 is sufficient to cause a significant difference in the redox behaviour of the auraferraborane clusters. Each of Fe4(CO)12BHAu2{AsPh3}2 and Fe4(CO)12BHAu3{PPh3}2 is subject to a one-electron reduction and a one-electron oxidation, and the phosphine derivative can be oxidised further to the dication. The redox congeners are short lived, but the degradation products can regenerate the starting clusters by reversing the redox pattern.

Original languageEnglish
Pages (from-to)7-18
Number of pages12
JournalJournal of Organometallic Chemistry
Volume408
Issue number1
DOIs
Publication statusPublished - 1991

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Electrochemistry
Carbon Monoxide
electrochemistry
Molecular Structure
phosphine
Molecular structure
molecular structure
phosphines
Oxidation-Reduction
synthesis
congeners
reversing
Electrons
X ray crystallography
crystallography
Boron
interstitials
boron
electrons
Gold

ASJC Scopus subject areas

  • Biochemistry
  • Chemical Engineering (miscellaneous)
  • Inorganic Chemistry
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Science (miscellaneous)
  • Materials Chemistry

Cite this

Synthesis and molecular structure of the borido cluster Fe4(CO)12BHAu2{AsPh3}2 and an investigation of the electrochemistry of Fe4(CO)12BHAu2L2, L AsPh3 or PPh3 . / Housecroft, Catherine E.; Shongwe, Musa S.; Rheingold, Arnold L.; Zanello, Piero.

In: Journal of Organometallic Chemistry, Vol. 408, No. 1, 1991, p. 7-18.

Research output: Contribution to journalArticle

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abstract = "The synthesis and characterisation by X-ray crystallography of Fe4(CO)12BHAu2{AsPh3}2 are reported. Fe4(CO)12BHAu2{AsPh3}2 is isostructural with its phosphine analogue Fe4(CO)12-BHAu2{PPh3}2 and possesses a central Fe4-butterfly framework with a semi-interstitial boron atom and two asymmetrically positioned AuAsPh3 groups, one bridging and FewingB edge and one interacting with an FehingeB edge. Changing the gold(I) substituent from PPh3 is sufficient to cause a significant difference in the redox behaviour of the auraferraborane clusters. Each of Fe4(CO)12BHAu2{AsPh3}2 and Fe4(CO)12BHAu3{PPh3}2 is subject to a one-electron reduction and a one-electron oxidation, and the phosphine derivative can be oxidised further to the dication. The redox congeners are short lived, but the degradation products can regenerate the starting clusters by reversing the redox pattern.",
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AB - The synthesis and characterisation by X-ray crystallography of Fe4(CO)12BHAu2{AsPh3}2 are reported. Fe4(CO)12BHAu2{AsPh3}2 is isostructural with its phosphine analogue Fe4(CO)12-BHAu2{PPh3}2 and possesses a central Fe4-butterfly framework with a semi-interstitial boron atom and two asymmetrically positioned AuAsPh3 groups, one bridging and FewingB edge and one interacting with an FehingeB edge. Changing the gold(I) substituent from PPh3 is sufficient to cause a significant difference in the redox behaviour of the auraferraborane clusters. Each of Fe4(CO)12BHAu2{AsPh3}2 and Fe4(CO)12BHAu3{PPh3}2 is subject to a one-electron reduction and a one-electron oxidation, and the phosphine derivative can be oxidised further to the dication. The redox congeners are short lived, but the degradation products can regenerate the starting clusters by reversing the redox pattern.

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