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Title: Revisiting the reactivity of Ru3(CO)12 with PhC≡CPh (diphenylacetylene)-new findings of a thermic effect towards higher nuclearity
Authors: Bhowmik, Mihir L
Abedin, Tareque S M
Kabir, Shariff E
Keywords: Ruthenium clusters;Carbonyls;Diphenylacetylene;Coordination mode;X-ray structures
Issue Date: Feb-2021
Publisher: NISCAIR-CSIR, India
Abstract: In this paper, we report tri- and tetranuclear ruthenium carbonyl compounds containing PhC≡CPh ligand showing μ32, μ34, μ42 coordination modes. A one-pot reaction between [Ru3(CO)12] and PhC≡CPh in THF (tetrahydrofuran) at 66 °C has given the new trinuclear compound [Ru3(CO)6(μ-CO)234-C4Ph4)] (2) in 30% yield together with the previously reported [Ru3(CO)832-C2Ph2)2] (1) in 25% yield. Compound 1 converts to 2 under refluxing condition in THF. A similar reaction involving [Ru3(CO)12] with PhC≡CPh in refluxing benzene (80 °C) afforded previously reported closo-tetraruthenium compounds [Ru4(CO)1242-C2Ph2)] (3) and [Ru4(CO)10(μ-CO)(μ42-C2Ph2)2] (4) in 25 and 16% yields, respectively, along with 2 in 20% yield. Compounds 1, 2 and 4 have been characterized by single-crystal X-ray diffraction analysis in addition to IR and 1H NMR spectroscopic methods.
Page(s): 177-184
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.60A(02) [February 2021]

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