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While observation of 13 was retained perfectly coherent with formation of 11 (Scheme 2, its occurrence seemed to rule out formation of 14. To force formation of 11 we used a twofold excess of Pd(PPh3)4. One equivalent of Pd would be necessary to form the Bimetallic array Mo-Pd-Mo of 11, while the second equivalent was expected to extract the two iodine groups from 9 with formation of 13. Moreover, it is worthy of note to underline variations of oxidation numbers of metal centers taking place in the transformations outlined in Scheme 2. Upon formation of 11 and 12 the molybdenum and tungsten atoms of 9 and 10 are reduced from the initial oxidation numbers +2 into +1. Conversely, while the zerovalent palladium entering into 9 and 10 to form 11 and 12 maintains its zero oxidation number, the palladium forming trans-(PPh3)2PdI2 is oxidized from Pd(O) to Pd+2
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