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Synthesis, Characterization, and X-ray Structures of Ru3(CO)9(dotpm)(L) Complexes [L = PPh3, P(C6H4Cl-p)3, and PPh2(C6H4Br-p)]

Authors

  • Siti Syaida Sirat,

    1. Chemical Sciences Programme, School of Distance Education, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
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  • Imthyaz Ahmed Khan,

    1. Department of Chemistry, Gokhale Centenary College, Ankola 581314, NK, Karnataka, India
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  • Omar Bin Shawkataly,

    Corresponding author
    1. Chemical Sciences Programme, School of Distance Education, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
    • Chemical Sciences Programme, School of Distance Education, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, Fax: +604-6576000===

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  • Mohd Mustaqim Rosli

    1. X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
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Abstract

The reaction of Ru3(CO)10(dotpm) (1) [dotpm = (bis(di-ortho-tolylphosphanyl)methane)] and one equivalent of L [L = PPh3, P(C6H4Cl-p)3 and PPh2(C6H4Br-p)] in refluxing n-hexane afforded a series of derivatives [Ru3(CO)9(dotpm)L] (24), respectively, in ca. 67–70 % yield. Complexes 24 were characterized by elemental analysis (CHN), IR, 1H NMR, 13C{1H} NMR and 31P{1H} NMR spectroscopy. The molecular structures of 2, 3, and 4 were established by single-crystal X-ray diffraction. The bidentate dotpm and monodentate phosphine ligands occupy equatorial positions with respect to the Ru triangle. The effect of substitution resulted in significant differences in the Ru–Ru and Ru–P bond lengths.

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