Reductive coupling of carbodiimides with metallic lithium: a new route to metal oxalamidino complexes.
Carbodiimides (RN)2C were reductively coupled with Li powder into [{Li(py)2}2(mu-C2N4R4)] (R = p-tolyl) (1) and [{Li(THF)}2(mu-C2N4R4)] (R = Cy) (2), and 2 reacted with UCl4 to give [Li(py)4]2[{UCl4(py)}2(mu-C2N4R4)] (R = Cy) (3); the crystal structures of 1 and 3 x 2py, the first oxalamidino compounds of an alkali metal and of a 5f-element, have been determined.
Villiers
Claude
C
Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, CEA/Saclay, 91191, Gif-sur-Yvette, France. claude.villiers@cea.fr
Thuéry
Pierre
P
Ephritikhine
Michel
M