Between Elemental Match and Mismatch: From K₁₂ Ge_3.5 Sb₆ to Salts of (Ge₂ Sb₂ )^2- , (Ge₄ Sb₁₂ )^4- , and (Ge₄ Sb₁₄ )⁴.

ABSTRACT: The solid mixture "K₂ GeSb" was shown to comprise single-crystalline K₁₂ Ge_3.5 Sb₆ (1), a double salt of K₅ [GeSb₃ ] with carbonate-like [GeSb₃ ]^5- anions, and the metallic Zintl phase K₂ Ge_1.5 . Extraction of 1 with ethane-1,2-diamine in the presence of crypt-222 afforded [K(crypt-222)]⁺ salts of several novel binary Zintl anions: (Ge₂ Sb₂ )^2- (in 2), (Ge₄ Sb₁₂ )^4- (in 3), and in the presence of [AuMePPh₃ ] also (Ge₄ Sb₁₄ )^4- (in 4). The anion in 2 represents a predicted, yet heretofore missing pseudo-tetrahedral anion. 4 comprises a cluster analogous to (Ge

SUBMITTER: Beuthert K 

PROVIDER: S-EPMC9796001 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature