Issue 26, 2021

Bulky arene-bridged bis(amide) and bis(amidinate) complexes of germanium(ii) and tin(ii)

Abstract

Several new, very bulky arene-bridged bis(amine) (viz. 1,3- and 1,4-{N(H)(SiPri3)}2(μ-C6H4), L1H2 and L2H2, respectively) and bis(amidine) pro-ligands (viz. 4,6-{[Dip(H)N](DipN)C}2(μ-DBF), DBF = dibenzofurandiyl, L3H2; and 1,3-{ArN(H)C(But)N}2(μ-C6H4), Ar = C6H2{C(H)Ph2}2Pri-2,6,4, L4H2) have been developed. All can be doubly deprotonated with LiBun. The resultant dilithium salts react with either GeCl2·(dioxane) or SnBr2 to yield a series of amidotetrelylenecyclophanes (:E(μ-L1)2E: and :E(μ-L2)2E:, E = Ge or Sn) and bis(halotetrelylene) complexes (:E(X)(μ-L3)(X)E:, E = Ge or Sn, X = Cl or Br; and :Ge(Cl)(μ-L4)(Cl)Ge:). Reduction of :Ge(Cl)(μ-L4)(Cl)Ge: with KC8 afforded the crystallographically characterised bis(amido/amidinatogermylene) compound, :Ge(μ-L4)2Ge:, which is believed to have formed via a disproportionation process.

Graphical abstract: Bulky arene-bridged bis(amide) and bis(amidinate) complexes of germanium(ii) and tin(ii)

Supplementary files

Article information

Article type
Paper
Submitted
20 maj 2021
Accepted
08 jun 2021
First published
08 jun 2021

Dalton Trans., 2021,50, 9118-9122

Bulky arene-bridged bis(amide) and bis(amidinate) complexes of germanium(II) and tin(II)

P. Garg, D. Dange and C. Jones, Dalton Trans., 2021, 50, 9118 DOI: 10.1039/D1DT01642C

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