Synthesis of a dimeric phosphine-stabilized phosphidogermanium(i)–amidogermanium(ii) derivative

Abstract

The reaction of amidinato phosphinoamidosilylene 1 with GeCl2·dioxane in toluene afforded a dimeric phosphine-stabilized phosphidogermanium(i)–amidogermanium(ii) derivative 3 and a mixture of by-products. Compound 3 is the first example comprising a novel phosphidogermanium(i) dimer moiety [Ph2P-Ge:]2, being considered as a base-stabilized diphosphidoditetrelyne derivative.

Reactivity of (TMS)2N(η1-Cp*)Si═Si(η1-Cp*)N(TMS)2 toward the Halides of Groups 13–15

“…In most of the cases, the reaction of silylene with GeCl 2 •dioxane furnishes silicon(II)-germanium(II) adducts like PhC(NtBu) 2 N(PPh 2 )-(Ar)Si→GeCl 2 [Ar = 2,6-iPr 2 C 6 H 3 ] and PhC(NtBu) 2 N-(TMS) 2 Si→GeCl 2 . 47,48 When 1 was treated with 2 equiv of GeCl 2 •dioxane in toluene at room temperature, 6 was obtained Scheme 2. Proposed Mechanism for the Formation of 3 in 55% yield (Scheme 3) along with some unidentified transient species.…”

“…We performed some reactions of 1 with the dihalides of germanium­(II) and tin­(II). In most of the cases, the reaction of silylene with GeCl 2 ·dioxane furnishes silicon­(II)-germanium­(II) adducts like PhC­(N t Bu) 2 N­(PPh 2 )­(Ar)­Si→GeCl 2 [Ar = 2,6- i Pr 2 C 6 H 3 ] and PhC­(N t Bu) 2 N­(TMS) 2 Si→GeCl 2 . , When 1 was treated with 2 equiv of GeCl 2 ·dioxane in toluene at room temperature, 6 was obtained in 55% yield (Scheme ) along with some unidentified transient species. The molecular structure of 6 (Figure ) disclosed a dendrimeric compound [{N­(TMS) 2 } 3 ­(SiCl 2 ) 3 ­GeH].…”