Tetranuclear ruthenium clusters containing a pseudo-octahedral Ru4S2 framework and diaminocarbene ligands

Ulf Bodensieck, Julio Cesar Santiago Contreras, Helen Stoeckli-Evans, Georg Süss-Fink

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25 Scopus citations


The tetranuclear ruthenium clusters [Ru4(CO)6(μ-CO)34-S) 2{C(NHR)2}2] 1 (R = Pri) and 3 (R = Et) and [Ru4(CO)7(μ-CO)34-S) 2{C(NHR)2}] 2 (R = Pri) and 4 (R = Et) were obtained from the thermal reaction of [Ru3(CO)12] with thioureas SC(NHR)2 (R = Pri or Et). In the case of diethylthiourea, a trinuclear cluster [Ru3(μ-H)(CO)93-NEtCSNHEt)] 5 was isolated in addition to 3 and 4. The single-crystal X-ray structure analyses of 1 and 2 reveal a pseudo-octahedral Ru4S2 skeleton with three μ-carbonyl bridges in the Ru4 plane; 1 has two terminal diaminocarbene ligands and six terminal carbonyls, whereas there is only one terminal diaminocarbene ligand but seven terminal carbonyls in 2.

Original languageEnglish
Pages (from-to)255-259
Number of pages5
JournalJournal of the Chemical Society. Dalton Transactions
Issue number2
StatePublished - 1992
Externally publishedYes

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Copyright 2007 Elsevier B.V., All rights reserved.


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