Darstellung und Konfiguration von Tricarbonylchromat‐Anionen mit SnCl 3 − und GeCl 3 − als Liganden

B 3 N 3 Me 6 Cr(CO) 3 reacts with [AsPh 4 ] [SnCl 3 ] and [AsPh 4 ] [GeCl 3 ] in tetrahydrofuran to give [AsPh 4 ] 3 [Cr(CO) 3 (SnCl 3 ) 3 ] and [AsPh 4 ] 3 [Cr(CO) 3 (GeCl 3 ) 3 ], respectively. According to IR. and 13 C‐NMR.‐data, the tricarbonylate anions possess a meridional configuration. The donor‐acceptor properties of SnCl 3 − and GeCl 3 − in the anions [Cr(CO) 3 (ECl 3 ) 3 ] 3− (E = Sn, Ge) are very similar. A similar synthesis of [AsPh 4 ] 3 [Cr(CO) 3 (SnF 3 ) 3 ] was not successful.