Abstract
Iodoruthenium (II) complexes trans-[Ru(L-L)2I2] (L-L=Ph2PCH2CH2PPh2, cis-Ph2PCHCHPPh2, Ph2AsCH2CH2AsPh2, o-C6H4-(AsMe2)2), trans-[Ru(SbPh3)4I2] and [Ru(PPh3)3I2] have been made by reaction of [Ru(H2O)6] [BF4]2 with the ligand and NaI in aqueous ethanol. Oxidation with conc. HNO3-HBF4 yielded trans-[Ru(L-L)2I2]BF4. The complexes were characterised by spectroscopy (IR, UV-Vis, 31P NMR) and cyclic voltammetry, and their properties compared with chloro- and bromo-analogues. Unsuccessful attempts to prepare palladium (IV) iodo complexes [Pd(L-L)2I2][BF4]2 are described. The crystal structures of [Ru(Ph2AsCH2CH2AsPh2)2I2]BF4 Pd∗o-C6H4(PMe2)2∗2Cl2][BF4]2 are reported.
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