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

[NHC → GeN(Ar)Cu2NAr]2, the formal adduct of germanium analogue of organic isonitrile [GeNAr] with Cu(I) imide [(Cu2NAr)2] (Ar = 2,6-iPr2C6H3) was prepared from the N-heterocyclic carbene (NHC) stabilized acyclic germylene Ge[N(H)Ar]2 by reacting with two equivalents of nBuLi and CuCl(PPh3)3. As elucidated by X-ray crystal structural characterization, the two separated [GeNAr] moieties interacted with [(Cu2NAr)2] core in the side-on mode.

Synthesis, Characterization, and Reaction of Digermylenes.

A series of digermylenes R(EGeL)2 (L=CH[C(Me)N(Ar)]2 , Ar=2,6-iPr2 C6 H3 ; E=O, R=1,3-C6 H4 (1), 1,4-C6 H4 (2), Me2 C(CH2 )2 (3); E=NH, R=1,4-C6 H4 (4), 1,4-C6 H10 (5); E=C(O)O, R=1,3-C6 H4 (6)) were synthesized by the reactions of L'Ge (L'=HC[C(CH2 )N(Ar)]C(Me)N(Ar), Ar=2,6-iPr2 C6 H3 ) with selected diphenols, diol, diamines, and o-/m-phthalic acids, respectively. Treatment of digermylene 1,3-C6 H4 (OGeL)2 (1) with sulfur, selenium and CuX (X=Cl, Br, I) led to the formation of 1,3-C6 H4 [OGe(S)L]2 (8), 1,3-C6 H4 [OGe(Se)L]2 (9), and (CuX)2 [1,3-C6 H4 (OGeL)2 ]2 (X=Cl (10), Br (11), I (12)), respectively. The obtained products were characterized by melting point, elemental analysis, FT-IR, 1 H and 13 C NMR spectroscopy, and single-crystal X-ray diffraction.