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Issue 39, 2018
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Phosphine oxide-based tricarbonylrhenium(I) complexes from phosphine/phosphine oxide and dihydroxybenzoquinones

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Abstract

Neutral phosphine oxide (P[double bond, length as m-dash]O) donor-based organometallic complexes [{Re(CO)3O[double bond, length as m-dash]PCy3}{μ-DHBQ}{Re(CO)3O[double bond, length as m-dash]PCy3}] (1), [{Re(CO)3O[double bond, length as m-dash]PPh3}{μ-DHBQ}{Re(CO)3O[double bond, length as m-dash]PPh3}] (2), [{Re(CO)3O[double bond, length as m-dash]PCy3}{μ-THQ}{Re(CO)3O[double bond, length as m-dash]PCy3}] (3), [{Re(CO)3O[double bond, length as m-dash]PPh3}{μ-THQ}{Re(CO)3O[double bond, length as m-dash]PPh3}] (4), [{Re(CO)3O[double bond, length as m-dash]PCy3}{μ-CA}{Re(CO)3O[double bond, length as m-dash]PCy3}] (5), and [{Re(CO)3O[double bond, length as m-dash]PPh3}{μ-CA}{Re(CO)3O[double bond, length as m-dash]PPh3}] (6) were assembled from phosphine/phosphine oxide, a dihydroxybenzoquinone donor and Re2(CO)10via a one-pot solvothermal approach. The soft phosphine donor was transformed into a hard phosphine oxide donor during the formation of 1, 3, 4, 5, and 6. The complexes 1–6 were air and moisture stable and were soluble in polar organic solvents. The complexes were characterized by elemental analysis, FT-IR, and NMR spectroscopic methods. The molecular structures of 1, 2, 4, and 6 were analyzed by single-crystal X-ray diffraction analysis. The UV-Visible absorption studies indicated that 1–6 in THF display strong visible light absorption in the range of ∼350–700 nm.

Graphical abstract: Phosphine oxide-based tricarbonylrhenium(i) complexes from phosphine/phosphine oxide and dihydroxybenzoquinones

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Publication details

The article was received on 21 Jul 2018, accepted on 01 Sep 2018 and first published on 18 Sep 2018


Article type: Paper
DOI: 10.1039/C8DT02985G
Citation: Dalton Trans., 2018,47, 13894-13901
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    Phosphine oxide-based tricarbonylrhenium(I) complexes from phosphine/phosphine oxide and dihydroxybenzoquinones

    R. Arumugam, B. Shankar, R. Shanmugam, T. Arumuganathan and M. Sathiyendiran, Dalton Trans., 2018, 47, 13894
    DOI: 10.1039/C8DT02985G

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