Bi?Zn Bond Formation in Liquid Ammonia Solution: [Bi?Zn?Bi](4-) , a Linear Polyanion that is Iso(valence)-electronic to CO2.

Angewandte Chemie (International ed. in English)

PubMedID: 24989142

Benda CB, Köchner T, Schäper R, Schulz S, Fässler TF. Bi?Zn Bond Formation in Liquid Ammonia Solution: [Bi?Zn?Bi](4-) , a Linear Polyanion that is Iso(valence)-electronic to CO2. Angew Chem Int Ed Engl. 2014;.
Reactions of the zinc(I) complex [Zn2 (Mesnacnac)2 ] (Mesnacnac=[(2,4,6-Me3 C6 H2 )NC(Me)]2 CH) with solid K3 Bi2 dissolved in liquid ammonia yield crystals of the compound K4 [ZnBi2 ]·(NH3 )12 (1), which contains the molecular, linear heteroatomic [Bi?Zn?Bi](4-) polyanion (1?a). This anion represents the first example of a three-atomic molecular ion of metal atoms being iso(valence)-electronic to CO2 and being synthesized in solution. The analogy of the discrete [Bi?Zn?Bi](4-) anion and the polymeric ${{{\hfill 1\atop \hfill \infty }}}$[(ZnBi4/2 )(4-) ] unit to monomeric CO2 and polymeric SiS2 is rationalized.