XPS indicates that the organometallic compd. [PtI[C6H3(CH2NMe2)2-2,6](h1-I2)], (I), representing an end-on coordinated dihalogen intermediate in the oxidative addn. reaction of dihalogen to d8 metal centers, contains platinum in a divalent oxidn. state. The use of a monochromatized x-ray source, short measurement times, and a cooled sample are essential to avoid sample degrdn. [on SciFinder (R)]
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Muijsers et al. (1992) studied this question.