1388151-33-4Relevant academic research and scientific papers
The effects of light lanthanoid elements (La, Ce, Nd) on (Ar)CF-Ln coordination and C-F activation in N,N-dialkyl-N′-2,3,5,6- tetrafluorophenylethane-1,2-diaminate complexes
Deacon, Glen B.,Forsyth, Craig M.,Junk, Peter C.,Kelly, Rory P.,Urbatsch, Aron,Wang, Jun
, p. 8624 - 8634 (2012)
A new class of homoleptic organoamido rare earth complexes [Ln(L Me or LEt)3] (Ln = La, Ce, Nd; L Me/Et = p-HC6F4N(CH2) 2NMe2/Et2) exhibiting (Ar)CF-Ln interactions has been isolated from redox-transmetallation/protolysis (RTP) reactions between the free metals, Hg(C6F5)2 and L Me/EtH in tetrahydrofuran, together with low yields of [Ln(L Me)2F]3 (Ln = La, Ce) or [Nd(L Et)2F]2 species, resulting from C-F activation reactions. The structures of the homoleptic complexes have eight-coordinate Ln metals with two tridentate (N,N′,F) amide ligands including (Ar)CF-Ln bonds and either a bidentate (N,F) ligand (Ln = La, Ce, Nd; LEt) or a bidentate (N,N′) ligand (Ln = Nd; LMe), in an unusual case of linkage variation. All (Ar)CF-Ln bond lengths are shorter than or similar to the corresponding Ln-NMe2/Et2 bond lengths. In [Ln(L Me)2F]3 (Ln = La, Ce) complexes, there is a six-membered ring framework with alternating F and Ln atoms and the metal atoms are eight-coordinate with two tridentate (N,N′,F) LMe ligands, whilst [Nd(LEt)2F]2 is a fluoride-bridged dimer.
