Preparation and reactivity of the new cyclopentadienyl-bridged complex (Me2SiCH2CH2SiMe2)(C5H4Fe(CO)2)2

https://doi.org/10.1016/0022-328X(83)87157-5Get rights and content

Abstract

A new metal-metal bonded binuclear iron system [Me2SiCH2CH2SiMe2][η5-C5H4Fe(CO)2]2 (2) has been prepared by treating two equivalents of NaCp with one equivalent of ClSi(Me)2CH2CH2SiClMe2 obtaining the intermediate (C5H5)Si(Me)2CH2CH2Si(Me)2(C5H5) which then is directly allowed to react with Fe(CO)5 given 2 in 30% yield. From this cyclopentadienyldisilyl linked system three new binuclear irom complexes are formed. Treatment of 2 with Na/Hg in THF produced the dianion [Me2SiCH2CH2SiMe2][η5-C5H4Fe(CO)2]2 which is quenched with CH3I giving [Me2SiCH2CH2SiMe2][η5-C4H4Fe(CO)2CH3]2 (4) in 76% yield. Complex 2 is oxidized with 1.2 equivalent of I2 to give [Me2SiCH2CH2SiMe2][η5-C5H4Fe(CO)2I]2 (5) in 85% yield. Photolysis of 5 (1 equiv.) and PPh3 (3 equiv.) results in the formation of the bis-substituted compound [Me2SiCH2CH2SiMe2][η5-C5H4Fe(CO)(PPh3)I]2 (6). These four new binuclear iron complexes are characterized by 1H, 13C, and 31P NMR and IR spectroscopy.

References (8)

  • G.O. Nelson et al.

    J. Organomet. Chem.

    (1982)
  • T.S. Piper et al.

    J. Inorg. Nucl. Chem.

    (1956)
  • M.H. Chisholm

    ACS Symp. Ser.

    (1981)
  • A.L. Balch

    ACS Symp. Ser.

    (1981)
There are more references available in the full text version of this article.

Cited by (17)

View all citing articles on Scopus
1

Presently located at Research Laboratories, Tennessee Eastman Co., Kingsport, Tennessee 37662.

View full text