Interaction of germanium analogue of organic isonitrile with Cu(I) imide in side-on mode.

[NHC → GeN(Ar)Cu 2 NAr] 2 , the formal adduct of germanium analogue of organic isonitrile [GeNAr] with Cu(I) imide [(Cu 2 NAr) 2 ] (Ar = 2,6- i Pr 2 C 6 H 3 ) was prepared from the N-heterocyclic carbene (NHC) stabilized acyclic germylene Ge[N(H)Ar] 2 by reacting with two equivalents of n BuLi and CuCl(PPh 3 ) 3 . As elucidated by X-ray crystal structural characterization, the two separated [GeNAr] moieties interacted with [(Cu 2 NAr) 2 ] core in the side-on mode.