Uranium dithiolene

At variance with the d1 V or Nb complexes described above, the uranium complexes owe their paramagnetism to 5/-electrons. Although these / orbitals, and particularly the 5/in the actinides when compared with the 4/in the lanthanides, interact with the dithiolene orbitals to lead to strong distortions of the US2C2 metallacycles (see Fig. 5) [35, 36, 47, 48], the SOMOs themselves are essentially... 

Dithiocarbamates, in Ru and Os half-sandwiches, 6, 493 Dithiocarbenes, Pt complexes, 8, 439 Dithiocarboxy ligands, in molybdenum carbonyls, 5, 447 Dithiolate-bridged compounds in dinuclear iron compounds with Fe-Fe bonds, 6, 238 as iron-only hydrogenase biomimetic models, 6, 239 Dithiolate diamides, with Zr(IV), 4, 784 Dithiolene—uranium complexes, synthesis and characterization, 4, 212 Ditopic receptors, characteristics, 12, 489 Ditungsten complexes, associated reactions, 5, 748 Divinyllead diacetates... 

In a related study, reaction of (COT)U(BH4)2(THF) with the dithiocarbonates dddtCO and dmioCO (dmio = l,3-dithiole-2-one-4,5-dithiolate) gave the neutral dithiolene compounds [(COT)U(dithiolene)]2 in good yields (dithiolene = dddt, dmio, or l,3-dithiole-4,5-dithiolate (mdt)). The reactions are accompanied by elimination of formaldehyde and borane. The X-ray crystal structures of [(COT)U(mdt)]2 and monomeric (COT)U(mdt)(pyridine)2 showed an interaction between the C=C double bond of the mdt ligand and the uranium atom, and the H NMR spectra revealed a facile dithiolene ring inversion process in solution.155... 

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