918959-38-3Relevant articles and documents
Experimental and Computational Studies on the Formation of Thorium–Copper Heterobimetallics
Yang, Pikun,Zhou, Enwei,Hou, Guohua,Zi, Guofu,Ding, Wanjian,Walter, Marc D.
, p. 13845 - 13849 (2016)
The formation of actinide–transition metal heterobimetallics mediated by a terminal actinide imido complex was comprehensively studied. The reaction of the thorium imido complex [(η5-C5Me5)2Th=N(mesityl)(DMAP)] (3), prepared from [(η5-C5Me5)2ThMe2] (1) and mesitylNH2or [(η5-C5Me5)2Th(NHmesityl)2] (2) in the presence of 4-(dimethylamino)pyridine (DMAP), with copper(I) halides gave the first thorium–copper heterobimetallic compounds [(η5-C5Me5)2Th(X){N(mesityl)Cu(DMAP)}] (X=Cl (4), Br (5), I (6)). Complexes 4–6 feature an unusual geometry with a short Th?Cu distance, which DFT studies attribute to a weak donor–acceptor bond from the Cu+atom to the electropositive Th4+atom. They are reactive species, as was shown by their reaction with the dimethyl complex [(η5-C5Me5)2ThMe2] (1). Furthermore, a comparison between Th and early transition metals confirmed that Th4+exhibits distinctively different reactivity from d-transition metals.