The potassium–naphthalene reduction of dichloro(tetraisocyanide)ruthenium complexes 1 affords the (tetraisocyanide)ruthenate dianions 2, which can be trapped with electrophiles and partially characterized by IR spectroscopy. Thus 2 reacts with Ph3SnCl by oxidative addition to give 3 (trans isomers). But 2 also reacts analogous to [Fe(CO)4]2−, with Si- and C-electrophiles. R = tBu, 2,6-Me2C6H3.
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Corella et al. (1992) studied this question.
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