Dichlorotetrakis(dimethyl sulfoxide) ruthenium(II) describes coordination compounds with the formula RuCl2(dmso)4, where DMSO is dimethylsulfoxide. Both cis and trans isomers are known, but the cis isomer is more common. The cis isomer is a yellow, air-stable solid that is soluble in some organic solvents. These sulfoxide complexes are used in the synthesis of various ruthenium(ii) complexes. They have also attracted attention as possible anti-cancer drugs.
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Dichlorotetrakis(dimethyl sulfoxide) ruthenium(II) describes coordination compounds with the formula RuCl2(dmso)4, where DMSO is dimethylsulfoxide. Both cis and trans isomers are known, but the cis isomer is more common. The cis isomer is a yellow, air-stable solid that is soluble in some organic solvents. These sulfoxide complexes are used in the synthesis of various ruthenium(ii) complexes. They have also attracted attention as possible anti-cancer drugs.
==Structure and synthesis== The cis isomer illustrates linkage isomerism for the DMSO ligand. One of the two dmso ligands that are cis to both chloride ligands is O-bonded while the other three dmso ligands are S-bonded. In the trans isomer, which is also yellow, all four dmso ligands are S-bonded. The cis isomer is formed thermally, and the trans isomer is obtained by UV-irradiation of the cis isomer.
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