A coordination compound of Ge(0) stabilized by a diiminopyridine ligand.
Angew Chem Int Ed Engl
; 53(10): 2711-5, 2014 Mar 03.
Article
en En
| MEDLINE
| ID: mdl-24488623
ABSTRACT
Reduction of the cationic Ge(II) complex [dimpyrGeCl][GeCl3] (dimpyr=2,6-(ArN=CMe)2NC5H3, Ar=2,6-iPr2C6H3) with potassium graphite in benzene affords an air sensitive, dark green compound of Ge(0), [dimpyrGe], which is stabilized by a bis(imino)pyridine platform. This compound is the first example of a complex of a zero-valent Groupâ
14 element that does not contain a carbene or carbenoid ligand. This species has a singlet ground state. DFT studies revealed partial delocalization of one of the Ge lone pairs over the π*(C=N) orbitals of the imines. This delocalization results in a partial multiple-bond character between the Ge atom and imine nitrogen atoms, a fact supported by the X-ray crystallography and IR spectroscopy data.
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Angew Chem Int Ed Engl
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2014
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Article